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A stock market, equity market, or share market is the aggregation of buyers and sellers of
stock Stock (also capital stock) is all of the shares into which ownership of a corporation A corporation is an organization—usually a group of people or a company—authorized by the state to act as a single entity (a legal entity recogn ...

stock
s (also called shares), which represent
ownership Ownership is the state or fact of exclusive rights and control over property Property (''latin: Res Privata'') in the Abstract and concrete, abstract is what belongs to or with something, whether as an attribute or as a component of said thing ...
claims on businesses; these may include ''securities'' listed on a public stock exchange, as well as stock that is only traded privately, such as shares of private companies which are sold to
investor An investor is a person that allocates capital with the expectation of a future financial return (profit) or to gain an advantage (interest). Through this allocated capital most of the time the investor purchases some species of property. Types ...
s through equity crowdfunding platforms. Investment in the stock market is most often done via
stockbroker A stockbroker, share holder registered representative (in the United States and Canada), trading representative (in Singapore), or more broadly, an investment broker, investment adviser, financial adviser, wealth manager, or investment professiona ...

stockbroker
ages and electronic trading platforms. Investment is usually made with an investment strategy in mind. Stocks can be categorized by the country where the company is domiciled. For example,
Nestlé Nestlé S.A. (; ) is a Swiss multinational food and drink processing conglomerate corporation headquartered in Vevey, Vaud, Switzerland. It is the largest food company in the world, measured by revenue and other metrics, since 2014.
and
Novartis Novartis International AG is a Switzerland, Swiss multinational corporation, multinational pharmaceutical company based in Basel, Switzerland. It is one of the largest pharmaceutical companies in the world. Novartis manufactures the drugs cloz ...

Novartis
are domiciled in
Switzerland ,german: Schweizer(in),french: Suisse(sse), it, svizzero/svizzera or , rm, Svizzer/Svizra , government_type = Federalism, Federal semi-direct democracy under a multi-party assembly-independent Directorial system, directorial republic , leader_t ...
and traded on the SIX Swiss Exchange, so they may be considered as part of the
Swiss Swiss may refer to: * the adjectival form of Switzerland *Swiss people Places *Swiss, Missouri *Swiss, North Carolina *Swiss, West Virginia *Swiss, Wisconsin Other uses *Swiss-system tournament, in various games and sports *Swiss International Ai ...
stock market, although the stocks may also be traded on exchanges in other countries, for example, as American depositary receipts (ADRs) on U.S. stock markets.


Size of the markets

The total
market capitalization Market capitalization, commonly called market cap, is the market value of a publicly traded company's outstanding shares. Market capitalization is equal to the share price multiplied by the number of shares outstanding. Since outstanding sto ...
of equity backed securities worldwide rose from US$2.5 trillion in 1980 to US$68.65 trillion at the end of 2018. As of December 31, 2019, the total
market capitalization Market capitalization, commonly called market cap, is the market value of a publicly traded company's outstanding shares. Market capitalization is equal to the share price multiplied by the number of shares outstanding. Since outstanding sto ...
of all stocks worldwide was approximately US$70.75 trillion. , there are 60 stock exchanges in the world. Of these, there are 16 exchanges with a
market capitalization Market capitalization, commonly called market cap, is the market value of a publicly traded company's outstanding shares. Market capitalization is equal to the share price multiplied by the number of shares outstanding. Since outstanding sto ...
of $1 trillion or more, and they account for 87% of global market capitalization. Apart from the Australian Securities Exchange, these 16 exchanges are all in either
North America North America is a continent entirely within the Northern Hemisphere and almost all within the Western Hemisphere. It can also be described as the northern subcontinent of the Americas. It is bordered to the north by the Arctic Ocean, to ...

North America
, Europe, or Asia. By country, the largest stock markets as of January 2020 are in the United States of America (about 54.5%), followed by Japan (about 7.7%) and the United Kingdom (about 5.1%).


Stock exchange

A stock exchange is an Exchange (organized market), exchange (or bourse) where
stockbroker A stockbroker, share holder registered representative (in the United States and Canada), trading representative (in Singapore), or more broadly, an investment broker, investment adviser, financial adviser, wealth manager, or investment professiona ...

stockbroker
s and stock trader, traders can buy and sell share (finance), shares (equity
stock Stock (also capital stock) is all of the shares into which ownership of a corporation A corporation is an organization—usually a group of people or a company—authorized by the state to act as a single entity (a legal entity recogn ...

stock
), Bond (finance), bonds, and other security (finance), securities. Many large companies have their stocks listed on a stock exchange. This makes the stock more liquid and thus more attractive to many investors. The exchange may also act as a guarantor of settlement. These and other stocks may also be traded "Over-the-counter (finance), over the counter" (OTC), that is, through a dealer. Some large companies will have their stock listed on more than one exchange in different countries, so as to attract international investors. Stock exchanges may also cover other types of securities, such as fixed-interest securities (bonds) or (less frequently) derivatives, which are more likely to be traded OTC. Trade in stock markets means the transfer (in exchange for money) of a stock or security from a seller to a buyer. This requires these two parties to agree on a price. Equity (finance), Equities (stocks or shares) confer an ownership interest in a particular company. Participants in the stock market range from small individual stock investors to larger investors, who can be based anywhere in the world, and may include banks, insurance companies, pension funds and hedge funds. Their buy or sell orders may be executed on their behalf by a stock exchange trader (finance), trader. Some exchanges are physical locations where transactions are carried out on a trading floor, by a method known as open outcry. This method is used in some stock exchanges and commodities exchanges, and involves traders shouting bid and offer prices. The other type of stock exchange has a network of computers where trades are made electronically. An example of such an exchange is the NASDAQ. A potential buyer ''bids'' a specific price for a stock, and a potential seller ''asks'' a specific price for the same stock. Buying or selling ''at the Market (economics), Market'' means you will accept ''any'' ask price or bid price for the stock. When the bid and ask prices match, a sale takes place, on a first-come, first-served basis if there are multiple bidders at a given price. The purpose of a stock exchange is to facilitate the exchange of securities between buyers and sellers, thus providing a marketplace. The exchanges provide real-time trading information on the listed securities, facilitating price discovery. The New York Stock Exchange (NYSE) is a physical exchange, with a hybrid market for placing orders electronically from any location as well as on the trading floor. Orders executed on the trading floor enter by way of exchange members and flow down to a floor broker, who submits the order electronically to the floor trading post for the Designated market maker ("DMM") for that stock to trade the order. The DMM's job is to maintain a two-sided market, making orders to buy and sell the security when there are no other buyers or sellers. If a bid–ask spread exists, no trade immediately takes place – in this case the DMM may use their own resources (money or stock) to close the difference. Once a trade has been made, the details are reported on the "tape" and sent back to the brokerage firm, which then notifies the investor who placed the order. Computers play an important role, especially for program trading. The NASDAQ is an electronic exchange, where all of the trading is done over a computer network. The process is similar to the New York Stock Exchange. One or more NASDAQ market makers will always provide a bid and ask the price at which they will always purchase or sell 'their' stock. The Paris Bourse, now part of Euronext, is an order-driven, electronic stock exchange. It was automated in the late 1980s. Prior to the 1980s, it consisted of an open outcry exchange. Stockbrokers met on the trading floor of the Palais Brongniart. In 1986, the CATS (trading system), CATS trading system was introduced, and the order matching system was fully automated. People trading stock will prefer to trade on the most popular exchange since this gives the largest number of potential counter parties (buyers for a seller, sellers for a buyer) and probably the best price. However, there have always been alternatives such as brokers trying to bring parties together to trade outside the exchange. Some third markets that were popular are Instinet, and later Island and Archipelago (the latter two have since been acquired by Nasdaq and NYSE, respectively). One advantage is that this avoids the Commission (remuneration), commissions of the exchange. However, it also has problems such as adverse selection. Financial regulators have probed dark pools.


Market participant

Market participants include individual retail investors, institutional investors (e.g., pension funds, insurance companies, mutual funds, index funds, exchange-traded funds, hedge funds, investor groups, banks and various other financial institutions), and also publicly traded corporations trading in their own shares. Robo-advisors, which automate investment for individuals are also major participants.


Demographics of market participation


Indirect vs. Direct Investment

Indirect investment involves owning shares indirectly, such as via a mutual fund or an exchange traded fund. Direct investment involves direct ownership of shares. Direct ownership of stock by individuals rose slightly from 17.8% in 1992 to 17.9% in 2007, with the median value of these holdings rising from $14,778 to $17,000. Indirect participation in the form of retirement accounts rose from 39.3% in 1992 to 52.6% in 2007, with the median value of these accounts more than doubling from $22,000 to $45,000 in that time. Rydqvist, Spizman, and Ilya Strebulaev, Strebulaev attribute the differential growth in direct and indirect holdings to differences in the way each are taxed in the United States. Investments in pension funds and 401ks, the two most common vehicles of indirect participation, are taxed only when funds are withdrawn from the accounts. Conversely, the money used to directly purchase stock is subject to taxation as are any dividends or capital gains they generate for the holder. In this way the current tax code incentivizes individuals to invest indirectly.


Participation by income and wealth strata

Rates of participation and the value of holdings differ significantly across strata of income. In the bottom quintile of income, 5.5% of households directly own stock and 10.7% hold stocks indirectly in the form of retirement accounts. The top decile of income has a direct participation rate of 47.5% and an indirect participation rate in the form of retirement accounts of 89.6%. The median value of directly owned stock in the bottom quintile of income is $4,000 and is $78,600 in the top decile of income as of 2007. The median value of indirectly held stock in the form of retirement accounts for the same two groups in the same year is $6,300 and $214,800 respectively. Since the Great Recession of 2008 households in the bottom half of the income distribution have lessened their participation rate both directly and indirectly from 53.2% in 2007 to 48.8% in 2013, while over the same period households in the top decile of the income distribution slightly increased participation 91.7% to 92.1%. The mean value of direct and indirect holdings at the bottom half of the income distribution moved slightly downward from $53,800 in 2007 to $53,600 in 2013. In the top decile, mean value of all holdings fell from $982,000 to $969,300 in the same time. The mean value of all stock holdings across the entire income distribution is valued at $269,900 as of 2013.


Participation by race and gender

The racial composition of stock market ownership shows households headed by whites are nearly four and six times as likely to directly own stocks than households headed by blacks and Hispanics respectively. As of 2011 the national rate of direct participation was 19.6%, for white households the participation rate was 24.5%, for black households it was 6.4% and for Hispanic households it was 4.3%. Indirect participation in the form of 401k ownership shows a similar pattern with a national participation rate of 42.1%, a rate of 46.4% for white households, 31.7% for black households, and 25.8% for Hispanic households. Households headed by married couples participated at rates above the national averages with 25.6% participating directly and 53.4% participating indirectly through a retirement account. 14.7% of households headed by men participated in the market directly and 33.4% owned stock through a retirement account. 12.6% of female-headed households directly owned stock and 28.7% owned stock indirectly.


Determinants and possible explanations of stock market participation

In a 2003 paper by Vissing-Jørgensen attempts to explain disproportionate rates of participation along wealth and income groups as a function of fixed costs associated with investing. Her research concludes that a fixed cost of $200 per year is sufficient to explain why nearly half of all U.S. households do not participate in the market. Participation rates have been shown to strongly correlate with education levels, promoting the hypothesis that information and transaction costs of market participation are better absorbed by more educated households. Behavioral economists Harrison Hong, Jeffrey Kubik and Jeremy Stein suggest that sociability and participation rates of communities have a statistically significant impact on an individual's decision to participate in the market. Their research indicates that social individuals living in states with higher than average participation rates are 5% more likely to participate than individuals that do not share those characteristics. This phenomenon also explained in cost terms. Knowledge of market functioning diffuses through communities and consequently lowers transaction costs associated with investing.


History


Early history

In 12th-century France, the courtiers ''de change'' were concerned with managing and regulating the debts of agricultural communities on behalf of the banks. Because these men also traded with debts, they could be called the first brokers. The Italian historian Lodovico Guicciardini described how, in late 13th-century Bruges, commodity traders gathered outdoors at a market square containing an inn owned by a family called ''Van der Beurze'', and in 1409 they became the "Brugse Beurse", institutionalizing what had been, until then, an informal meeting. The idea quickly spread around Flanders and neighboring countries and "Beurzen" soon opened in Ghent and Rotterdam. International traders, and specially the Italian bankers, present in Bruges since the early 13th-century, took back the word in their countries to define the place for stock market exchange: first the Italians (Borsa), but soon also the French (Bourse), the Germans (börse), Russians (birža), Czechs (burza), Swedes (börs), Danes and Norwegians (børs). In most languages the word coincides with that for money bag, dating back to the Latin bursa, from which obviously also derives the name of the Van der Beurse family. In the middle of the 13th century, Venice, Venetian bankers began to trade in government securities. In 1351 the Venetian government outlawed spreading rumors intended to lower the price of government funds. Bankers in Pisa, Verona, Genoa and Florence also began trading in government securities during the 14th century. This was only possible because these were independent city-states not ruled by a duke but a council of influential citizens. Italian companies were also the first to issue shares. Companies in England and the Low Countries followed in the 16th century. Around this time, a joint stock company—one whose stock is owned jointly by the shareholders—emerged and became important for colonization of what Europeans called the "New World".


Birth of formal stock markets

s, issued by the Vereenigde Oost-Indische Compagnie, VOC chamber of Enkhuizen, dated 9 Sep 1606. The first formal stock market in its modern sense – as one of the indispensable elements of Capitalism#Modern capitalism, modern capitalism – was a pioneering innovation by the Dutch East India Company, VOC managers and shareholders in the early 1600s. File:Emanuel de Witte - De binnenplaats van de beurs te Amsterdam.jpg, 200px, Courtyard of the Amsterdam Stock Exchange (:nl:Beurs van Hendrick de Keyser, Beurs van Hendrick de Keyser) by Emanuel de Witte, 1653. The Amsterdam Stock Exchange is said to have been the first stock exchange to introduce continuous trade in the early 17th century. The process of buying and selling the Dutch East India Company, VOC's shares, on the Amsterdam Stock Exchange, became the basis of the world's first official (formal) stock market. In the 17th and 18th centuries, the Dutch pioneered several financial innovations that helped lay the foundations of the modern financial system. While the Italian city-states produced the first transferable government bonds, they did not develop the other ingredient necessary to produce a fully fledged capital market: the stock market. In the early 1600s the Dutch East India Company (VOC) became the first company in history to issue Bond (finance), bonds and Share (finance), shares of
stock Stock (also capital stock) is all of the shares into which ownership of a corporation A corporation is an organization—usually a group of people or a company—authorized by the state to act as a single entity (a legal entity recogn ...

stock
to the general public. As Edward Stringham (2015) notes, "companies with transferable shares date back to classical Rome, but these were usually not enduring endeavors and no considerable secondary market existed (Neal, 1997, p. 61)." The Dutch East India Company (founded in the year of 1602) was also the first joint-stock company to get a fixed capital stock and as a result, continuous trade in company stock occurred on the Amsterdam Exchange. Soon thereafter, a lively trade in various Derivative (finance), derivatives, among which options and repos, emerged on the Amsterdam market. Dutch traders also pioneered Short (finance), short selling – a practice which was banned by the Dutch authorities as early as 1610. Amsterdam-based businessman Joseph de la Vega's ''Confusion de Confusiones'' (1688) was the earliest known book about stock trading and first book on the inner workings of the stock market (including the stock exchange). There are now stock markets in virtually every developed and most developing economies, with the world's largest markets being in the United States, United Kingdom, Japan, India, China, Canada, Germany (Frankfurt Stock Exchange), France, South Korea and the Netherlands.


Importance


Function and purpose

The stock market is one of the most important ways for Company, companies to raise money, along with debt markets which are generally more imposing but do not trade publicly. This allows businesses to be publicly traded, and raise additional financial capital for expansion by selling shares of ownership of the company in a public market. The Market liquidity, liquidity that an exchange affords the investors enables their holders to quickly and easily sell securities. This is an attractive feature of investing in stocks, compared to other less liquid investments such as property and other immoveable assets. History has shown that the price of
stock Stock (also capital stock) is all of the shares into which ownership of a corporation A corporation is an organization—usually a group of people or a company—authorized by the state to act as a single entity (a legal entity recogn ...

stock
s and other assets is an important part of the dynamics of economic activity, and can influence or be an indicator of social mood. An economy where the stock market is on the rise is considered to be an up-and-coming economy. The stock market is often considered the primary indicator of a country's economic strength and development. Rising share prices, for instance, tend to be associated with increased business investment and vice versa. Share prices also affect the wealth of households and their consumption. Therefore, central banks tend to keep an eye on the control and behavior of the stock market and, in general, on the smooth operation of financial system functions. Financial stability is the wikt:raison d'être, raison d'être of central banks. Exchanges also act as the clearinghouse for each transaction, meaning that they collect and deliver the shares, and guarantee payment to the seller of a security. This eliminates the risk to an individual buyer or seller that the counterparty could default on the transaction. The smooth functioning of all these activities facilitates economic growth in that lower costs and enterprise risks promote the production of goods and services as well as possibly employment. In this way the financial system is assumed to contribute to increased prosperity, although some controversy exists as to whether the optimal financial system is bank-based or market-based. Recent events such as the Global Financial Crisis have prompted a heightened degree of scrutiny of the impact of the structure of stock markets (called market microstructure), in particular to the stability of the financial system and the transmission of systemic risk.


Relation to the modern financial system

A transformation is the move to electronic trading to replace human trading of listed Security (finance), securities.


Behavior of stock prices

in Times Square, New York City Changes in stock prices are mostly caused by external factors such as Socioeconomics, socioeconomic conditions, inflation, exchange rates. Intellectual capital does not affect a company stock's current earnings. Intellectual capital contributes to a stock's return growth. See Stock market cycles. The efficient-market hypothesis (EMH) is a hypothesis in financial economics that states that asset prices reflect all available information at the current time. The 'hard' efficient-market hypothesis does not explain the cause of events such as the Black Monday (1987), crash in 1987, when the Dow Jones Industrial Average plummeted 22.6 percent—the largest-ever one-day fall in the United States. This event demonstrated that share prices can fall dramatically even though no generally agreed upon definite cause has been found: a thorough search failed to detect ''any'' 'reasonable' development that might have accounted for the crash. (Note that such events are predicted to occur strictly by randomness, although very rarely.) It seems also to be true more generally that many price movements (beyond those which are predicted to occur 'randomly') are ''not'' occasioned by new information; a study of the fifty largest one-day share price movements in the United States in the post-war period seems to confirm this. A 'soft' EMH has emerged which does not require that prices remain at or near equilibrium, but only that market participants cannot ''systematically'' profit from any momentary 'market anomaly'. Moreover, while EMH predicts that all price movement (in the absence of change in fundamental information) is random (i.e. non-trending), many studies have shown a marked tendency for the stock market to trend over time periods of weeks or longer. Various explanations for such large and apparently non-random price movements have been promulgated. For instance, some research has shown that changes in estimated risk, and the use of certain strategies, such as stop-loss limits and value at risk limits, ''theoretically could'' cause financial markets to overreact. But the best explanation seems to be that the distribution of stock market prices is non-Gaussian (in which case EMH, in any of its current forms, would not be strictly applicable). Other research has shown that psychological factors may result in ''exaggerated'' (statistically anomalous) stock price movements (contrary to EMH which assumes such behaviors 'cancel out'). Psychological research has demonstrated that people are predisposed to 'seeing' patterns, and often will perceive a pattern in what is, in fact, just ''noise'', e.g. seeing familiar shapes in clouds or ink blots. In the present context, this means that a succession of good news items about a company may lead investors to overreact positively, driving the price up. A period of good returns also boosts the investors' self-confidence, reducing their (psychological) risk threshold. Another phenomenon—also from psychology—that works against an objectivity (philosophy), objective assessment is ''Groupthink, group thinking''. As social animals, it is not easy to stick to an opinion that differs markedly from that of a majority of the group. An example with which one may be familiar is the reluctance to enter a restaurant that is empty; people generally prefer to have their opinion validated by those of others in the group. In one paper the authors draw an analogy with gambling. In normal times the market behaves like a game of roulette; the probabilities are known and largely independent of the investment decisions of the different players. In times of market stress, however, the game becomes more like poker (herding behavior takes over). The players now must give heavy weight to the psychology of other investors and how they are likely to react psychologically. In the period running up to the 1987 crash, less than 1 percent of the analysts' recommendations had been to sell (and even during the 2000–2002 Bear Market, bear market, the average did not rise above 5%). In the run-up to 2000, the media amplified the general euphoria, with reports of rapidly rising share prices and the notion that large sums of money could be quickly earned in the so-called new economy stock market. Stock markets play an essential role in growing industries that ultimately affect the economy through transferring available funds from units that have excess funds (savings) to those who are suffering from funds deficit (borrowings) (Padhi and Naik, 2012). In other words, capital markets facilitate funds movement between the above-mentioned units. This process leads to the enhancement of available financial resources which in turn affects the economic growth positively. Economic and financial theories argue that stock prices are affected by macroeconomic trends. Macroeconomic trends include such as changes in GDP, unemployment rates, national income, price indices, output, consumption, unemployment, inflation, saving, investment, energy, international trade, immigration, productivity, aging populations, innovations, international finance. increasing corporate profit, increasing profit margins, higher concentration of business, lower company income, less vigorous activity, less progress, lower investment rates, lower productivity growth, less employee share of corporate revenues, decreasing Worker to Beneficiary ratio (year 1960 5:1, year 2009 3:1, year 2030 2.2:1), increasing female to male ratio college graduates. Many different academic researchers have stated that companies with low P/E ratios and smaller-sized companies have a tendency to outperform the market. Research has shown that mid-sized companies outperform large cap companies, and smaller companies have higher returns historically.


Irrational behavior

Sometimes, the market seems to react irrationally to economic or financial news, even if that news is likely to have no real effect on the fundamental value of securities itself. However, this market behaviour may be more apparent than real, since often such news was anticipated, and a counter reaction may occur if the news is better (or worse) than expected. Therefore, the stock market may be swayed in either direction by press releases, rumors, euphoria and mass panic. Over the short-term, stocks and other securities can be battered or buoyed by any number of fast market-changing events, making the stock market behavior difficult to predict. Emotions can drive prices up and down, people are generally not as rational as they think, and the reasons for buying and selling are generally accepted. Behaviorists argue that investors often behave ''irrationally'' when making investment decisions thereby incorrectly pricing securities, which causes market inefficiencies, which, in turn, are opportunities to make money. However, the whole notion of EMH is that these non-rational reactions to information cancel out, leaving the prices of stocks rationally determined. The Dow Jones Industrial Average biggest gain in one day was 936.42 points or 11%.


Crashes

's plot of the S&P Composite Real Price Index, Earnings, Dividends, and Interest Rates, from ''Irrational Exuberance (book), Irrational Exuberance'', 2d ed. In the preface to this edition, Shiller warns, "The stock market has not come down to historical levels: the price-earnings ratio as I define it in this book is still, at this writing [2005], in the mid-20s, far higher than the historical average... People still place too much confidence in the markets and have too strong a belief that paying attention to the gyrations in their investments will someday make them rich, and so they do not make conservative preparations for possible bad outcomes." Image:Price-Earnings Ratios as a Predictor of Twenty-Year Returns (Shiller Data).png, 380px, Price-Earnings ratios as a predictor of twenty-year returns based upon the plot by Robert Shiller (Figure 10.1, source
/small>). The horizontal axis shows the :Image:IE Real SandP Price-Earnings Ratio, Interest 1871-2006.png, real price-earnings ratio of the S&P Composite Stock Price Index as computed in ''Irrational Exuberance'' (inflation adjusted price divided by the prior ten-year mean of inflation-adjusted earnings). The vertical axis shows the geometric average real annual return on investing in the S&P Composite Stock Price Index, reinvesting dividends, and selling twenty years later. Data from different twenty-year periods is color-coded as shown in the key. See also :Image:Price-Earnings Ratios as a Predictor of Ten-Year Returns (Shiller Data).png, ten-year returns. Shiller states that :Image:Price-Earnings Ratios as a Predictor of Ten-Year Returns (Shiller Data).png, this plot "confirms that long-term investors—investors who commit their money to an investment for ten full years—did do well when prices were low relative to earnings at the beginning of the ten years. Long-term investors would be well advised, individually, to lower their exposure to the stock market when it is high, as it has been recently, and get into the market when it is low." A stock market crash is often defined as a sharp dip in share prices of
stock Stock (also capital stock) is all of the shares into which ownership of a corporation A corporation is an organization—usually a group of people or a company—authorized by the state to act as a single entity (a legal entity recogn ...

stock
s listed on the stock exchanges. In parallel with various economic factors, a reason for stock market crashes is also due to panic and investing public's loss of confidence. Often, stock market crashes end speculative economic bubbles. There have been famous stock market crashes that have ended in the loss of billions of dollars and wealth destruction on a massive scale. An increasing number of people are involved in the stock market, especially since the social security and retirement plans are being increasingly privatized and linked to
stock Stock (also capital stock) is all of the shares into which ownership of a corporation A corporation is an organization—usually a group of people or a company—authorized by the state to act as a single entity (a legal entity recogn ...

stock
s and bonds and other elements of the market. There have been a number of famous stock market crashes like the Wall Street Crash of 1929, the stock market crash of 1973–4, the Black Monday (1987), Black Monday of 1987, the Dot-com bubble of 2000, and the Stock Market Crash of 2008.


1929

One of the most famous stock market crashes started October 24, 1929, on Black Thursday. The Dow Jones Industrial Average lost 50% during this stock market crash. It was the beginning of the Great Depression.


1987

Another famous crash took place on October 19, 1987 – Black Monday. The crash began in Hong Kong and quickly spread around the world. By the end of October, stock markets in Hong Kong had fallen 45.5%, Australia 41.8%, Spain 31%, the United Kingdom 26.4%, the United States 22.68%, and Canada 22.5%. Black Monday itself was the largest one-day percentage decline in stock market history – the Dow Jones fell by 22.6% in a day. The names "Black Monday" and "Black Tuesday" are also used for October 28–29, 1929, which followed Terrible Thursday—the starting day of the stock market crash in 1929. The crash in 1987 raised some puzzles – main news and events did not predict the catastrophe and visible reasons for the collapse were not identified. This event raised questions about many important assumptions of modern economics, namely, the theory of rational conduct of human being, theory of rational human conduct, the theory of market equilibrium and the efficient-market hypothesis. For some time after the crash, trading in stock exchanges worldwide was halted, since the exchange computers did not perform well owing to enormous quantity of trades being received at one time. This halt in trading allowed the Federal Reserve System and central banks of other countries to take measures to control the spreading of worldwide financial crisis. In the United States the SEC introduced several new measures of control into the stock market in an attempt to prevent a re-occurrence of the events of Black Monday.


2007-2009

This marked the beginning of the Great Recession. Starting in 2007 and lasting through 2009, financial markets experienced one of the sharpest declines in decades. It was more widespread than just the stock market as well. The housing market, lending market, and even global trade experienced unimaginable decline. Sub-prime lending led to the housing bubble bursting and was made famous by movies like The Big Short (film), The Big Short where those holding large mortgages were unwittingly falling prey to lenders. This saw banks and major financial institutions completely fail in many cases and took major government intervention to remedy during the period. From October 2007 to March 2009, the S&P 500 fell 57% and wouldn't recover to its 2007 levels until April 2013.


Circuit breakers

Since the early 1990s, many of the largest exchanges have adopted electronic 'matching engines' to bring together buyers and sellers, replacing the open outcry system. Electronic trading now accounts for the majority of trading in many developed countries. Computer systems were upgraded in the stock exchanges to handle larger trading volumes in a more accurate and controlled manner. The SEC modified the margin requirements in an attempt to lower the volatility of common stocks, stock options and the futures market. The New York Stock Exchange and the Chicago Mercantile Exchange introduced the concept of a circuit breaker. The circuit breaker halts trading if the Dow declines a prescribed number of points for a prescribed amount of time. In February 2012, the Investment Industry Regulatory Organization of Canada (IIROC) introduced single-stock circuit breakers. * New York Stock Exchange (NYSE) circuit breakers


Stock market index

The movements of the prices in global, regional or local markets are captured in price indices called stock market indices, of which there are many, e.g. the Standard & Poor's, S&P, the FTSE 100 Index, FTSE and the Euronext indices. Such indices are usually
market capitalization Market capitalization, commonly called market cap, is the market value of a publicly traded company's outstanding shares. Market capitalization is equal to the share price multiplied by the number of shares outstanding. Since outstanding sto ...
weighted, with the weights reflecting the contribution of the stock to the index. The constituents of the index are reviewed frequently to include/exclude stocks in order to reflect the changing business environment.


Derivative instruments

Financial innovation has brought many new financial instruments whose pay-offs or values depend on the prices of stocks. Some examples are exchange-traded funds (ETFs), stock index and stock options, equity swaps, single-stock futures, and stock index futures contract, futures. These last two may be traded on futures exchanges (which are distinct from stock exchanges—their history traces back to commodity futures exchanges), or traded Over-the-counter (finance), over-the-counter. As all of these products are only ''Derivative (finance), derived'' from stocks, they are sometimes considered to be traded in a (hypothetical) derivatives market, rather than the (hypothetical) stock market.


Leveraged strategies

Stock that a trader does not actually own may be traded using short selling; margin buying may be used to purchase stock with borrowed funds; or, ''derivative (finance), derivatives'' may be used to control large blocks of stocks for a much smaller amount of money than would be required by outright purchase or sales.


Short selling

In short selling, the trader borrows stock (usually from his brokerage which holds its clients shares or its own shares on account to lend to short sellers) then sells it on the market, betting that the price will fall. The trader eventually buys back the stock, making money if the price fell in the meantime and losing money if it rose. Exiting a short position by buying back the stock is called "covering". This strategy may also be used by unscrupulous traders in illiquid or thinly traded markets to artificially lower the price of a stock. Hence most markets either prevent short selling or place restrictions on when and how a short sale can occur. The practice of naked shorting is illegal in most (but not all) stock markets.


Margin buying

In margin buying, the trader borrows money (at interest) to buy a stock and hopes for it to rise. Most industrialized countries have regulations that require that if the borrowing is based on collateral from other stocks the trader owns outright, it can be a maximum of a certain percentage of those other stocks' value. In the United States, the margin requirements have been 50% for many years (that is, if you want to make a $1000 investment, you need to put up $500, and there is often a maintenance margin below the $500). A margin call is made if the total value of the investor's account cannot support the loss of the trade. (Upon a decline in the value of the margined securities additional funds may be required to maintain the account's equity, and with or without notice the margined security or any others within the account may be sold by the brokerage to protect its loan position. The investor is responsible for any shortfall following such forced sales.) Regulation of margin requirements (by the Federal Reserve) was implemented after the Crash of 1929. Before that, speculators typically only needed to put up as little as 10 percent (or even less) of the total investment represented by the stocks purchased. Other rules may include the prohibition of ''free-riding:'' putting in an order to buy stocks without paying initially (there is normally a three-day grace period for delivery of the stock), but then selling them (before the three-days are up) and using part of the proceeds to make the original payment (assuming that the value of the stocks has not declined in the interim).


Types of financial markets

Financial markets can be divided into different subtypes:


For the assets transferred

*Money market : It is traded with money or financial assets with short-term maturity and high liquidity, generally assets with a term of less than one year. *Capital market : Financial assets with medium and long-term maturity are traded, which are basic for carrying out certain investment processes.


Depending on its structure

*Organized market *Non-organized markets denominated in English (" Over The Counter ").


According to the negotiation phase of financial assets

*Primary market : Financial assets are created. In this market, assets are transmitted directly by their issuer. *Secondary market : Only existing financial assets are exchanged, which were issued at a previous time. This market allows holders of financial assets to sell instruments that were already issued in the primary market (or that had already been transmitted in the secondary market) and that are in their possession, or to buy other financial assets.


According to the geographical perspective

*National markets. The currency in which the financial assets are denominated and the residence of those involved is national. 2 *International markets


According to the type of asset traded

*Traditional market. In which financial assets such as demand deposits, stocks or bonds are traded . *Alternative market. In which alternative financial assets are traded such as portfolio investments, promissory notes, factoring, real estate (e.g. through fiduciary rights), in private equity funds, venture capital funds, hedge funds, investment projects (e.g. infrastructure, cinema, etc.) among many others.


Other markets

*Commodity markets, which allow the trading of commodities . *Derivatives markets, which provide instruments for managing financial risk *Forward markets, which provide standardized forward contracts to trade products at a future date; see also forward . *Insurance markets, which allows the redistribution of varied risks; see insurance contract . *Foreign exchange market, which allows the exchange of foreign currencies.


New issuance

For statistics on equity issuances, see Refinitiv league tables.


Investment strategies

Many strategies can be classified as either fundamental analysis or technical analysis. Fundamental analysis refers to analyzing companies by their financial statements found in SEC filings, business trends, and general economic conditions. Technical analysis studies price actions in markets through the use of charts and quantitative techniques to attempt to forecast price trends based on historical performance, regardless of the company's financial prospects. One example of a technical strategy is the Trend following method, used by John W. Henry and Ed Seykota, which uses price patterns and is also rooted in risk management and diversification (finance), diversification. Additionally, many choose to invest via passive index funds. In this method, one holds a portfolio of the entire stock market or some segment of the stock market (such as the S&P 500 Index or Wilshire 5000). The principal aim of this strategy is to maximize diversification, minimize taxes from realizing gains, and ride the general trend of the stock market to rise. Responsible investment emphasizes and requires a long-term horizon on the basis of fundamental analysis only, avoiding hazards in the expected return of the investment. Socially responsible investing is another investment preference.


Taxation

Taxation is a consideration of all investment strategies; profit from owning stocks, including dividends received, is subject to different tax rates depending on the type of security and the holding period. Most profit from stock investing is taxed via a capital gains tax. In many countries, the corporations pay taxes to the government and the shareholders once again pay taxes when they profit from owning the stock, known as "double taxation".


See also

* Equity crowdfunding * List of stock exchange trading hours * List of stock exchanges * List of stock market indices * Modeling and analysis of financial markets * Securities market participants (United States) * Securities regulation in the United States * Selling climax * Stock market bubble * Stock market cycles * Stock market data systems


Notes


References


Further reading

* * * {{DEFAULTSORT:Stock Market Stock market, 17th-century introductions Capitalism Dutch inventions