Market order
A market order is a buy or sell order to be executed immediately at the ''current'' ''market'' prices. As long as there are willing sellers and buyers, market orders are filled. Market orders are used when certainty of execution is a priority over the price of execution. A market order is the simplest of the order types. This order type does not allow any control over the price received. The order is filled at the best price available at the relevant time. In fast-moving markets, the price paid or received may be quite different from the last price quoted before the order was entered. A market order may be split across multiple participants on the other side of the transaction, resulting in different prices for some of the shares. It is the most basic of all orders and therefore, they incur the lowest of commissions, from both online and traditional brokers.Limit order
A limit order is an order to buy aTime in force
A day order or good for day order (GFD) (the most common) is a market or limit order that is in force from the time the order is submitted to the end of the day's trading session. For stock markets, the closing time is defined by the exchange. For the foreign exchange market, this is until 5 p.m. EST/EDT for all currencies except theConditional orders
A conditional order is any order other than a limit order which is executed only when a specific condition is satisfied.Stop orders
A stop order or stop-loss order is an order to buy or sell a stock once the price of the stock reaches a specified price, known as the stop price. When the stop price is reached, a stop order becomes a market order. A buy-stop order is entered at a stop price above the current market price. Investors generally use a buy-stop order to limit a loss or to protect a profit on a stock that they have sold short. A sell-stop order is entered at a stop price below the current market price. Investors generally use a sell-stop order to limit a loss or to protect a profit on a stock that they own. When the stop price is reached, the stop order becomes a market order. This means the trade will definitely be executed, but not necessarily at or near the stop price, particularly when the order is placed into a fast-moving market, or if there is insufficient liquidity available relative to the size of the order. The use of stop orders is much more frequent for stocks and futures that trade on an exchange than those that trade in theSell-stop order
A sell-stop order is an instruction to sell at the best available price after the price goes below the stop price. A sell- stop price is always below the current market price. For example, if an investor holds a stock currently valued at $50 and is worried that the value may drop, he/she can place a sell-stop order at $40. If the share price drops to $40, the broker sells the stock at the next available price. This can limit the investor's losses or lock in some of the investor's profits (if the stop price is at or above the purchase price).Buy-stop order
A buy-stop order is typically used to limit a loss (or to protect an existing profit) on a short sale. A buy- stop price is always above the current market price. For example, if an investor sells a stock short — hoping for the stock price to go down so they can return the borrowed shares at a lower price (i.e. covering) — the investor may use a buy-stop order to protect against losses if the price goes too high. It can also be used to advantage in a declining market when an investor decides to enter a long position at what he perceives to be prices close to the bottom after a market sell-off.Stop-limit order
A stop-limit order is an order to buy or sell a stock that combines the features of a stop order and a limit order. Once the stop price is reached, a stop-limit order becomes a limit order that will be executed at a specified price (or better). As with all limit orders, a stop-limit order doesn't get filled if the security's price never reaches the specified limit price.Trailing stop order
A trailing stop order is entered with a stop parameter that creates a moving or ''trailing'' activation price, hence the name. This parameter is entered as a percentage change or actual specific amount of rise (or fall) in the security price. Trailing stop sell orders are used to maximize and protect profit as a stock's price rises and limit losses when its price falls. For example, a trader has bought stock ABC at $10.00 and immediately places a trailing stop sell order to sell ABC with a $1.00 trailing stop (10% of its current price). This sets the stop price to $9.00. After placing the order, ABC does not exceed $10.00 and falls to a low of $9.01. The trailing stop order is not executed because ABC has not fallen $1.00 from $10.00. Later, the stock rises to a high of $15.00 which resets the stop price to $13.50. It then falls to $13.50 ($1.50 (10%) from its high of $15.00) and the trailing stop sell order is entered as a market order.Trailing stop-limit order
A trailing stop-limit order is similar to a trailing stop order. Instead of selling at market price when triggered, the order becomes a limit order.Peg orders
To behave like a market maker, it is possible to use what are called peg orders.Peg best
Like a realMid-price peg
A mid-price order is an order whose limit price is continually set at the average of the "best bid" and "best offer" prices in the market. The values of the bid and offer prices used in this calculation may be either a local or national best bid and offer. They are also called Peg-to-Midpoint. Mid-price peg order types are commonly supported on alternative trading systems andMarket-if-touched order
A buy market-if-touched order is an order to buy at the best available price, if the market price goes down to the "if touched" level. As soon as this trigger price is touched the order becomes a market buy order. A sell market-if-touched order is an order to sell at the best available price, if the market price goes up to the "if touched" level. As soon as this trigger price is touched the order becomes a market sell order.One cancels other orders
One cancels other (OCO) orders are used when the trader wishes to capitalize on only one of two or more possible trading possibilities. For instance, the trader may wish to trade stock ABC at $10.00 or XYZ at $20.00. In this case, they would execute an OCO order composed of two parts: A limit order for ABC at $10.00 and a limit order for XYZ at $20.00. If ABC reaches $10.00, ABC's limit order would be executed, and the XYZ limit order would be canceled.One sends other orders
One sends other (OSO) orders are used when the trader wishes to send a new order only when another one has been executed. For instance, the trader may wish to buy stock ABC at $10.00 then immediately try to sell it at $10.05 to gain the spread. In this case, they would execute an OSO order composed of two parts: A limit buy order for ABC at $10.00, and a limit sell order for the same stock at $10.05. If ABC reaches $10.00, ABC's limit order would be executed, and the sell limit order would be sent. In short, multiple orders are attached to a main order, and the orders are executed sequentially.Tick-sensitive orders
An uptick is when the last (non-zero) price change is positive, and a downtick is when the last (non-zero) price change is negative. Any tick-sensitive instruction can be entered at the trader's option, for example buy on downtick, although these orders are rare. In markets where short sales may only be executed on an uptick, a short–sell order is inherently tick-sensitive.At the opening
At the opening is an order type set to be executed at the very opening of the stock market trading day. If it wouldn't be possible to execute it as part of the firstDiscretionary order
A discretionary order is an order that allows the broker to delay the execution at its discretion to try to get a better price; these are sometimes called not-held orders. It is commonly added to stop loss orders and limit orders. They can be placed via a broker or an electronic trading system.Bracket
Puts to the market a pair of two orders: For the same title, for the same direction, i.e., both to sell: * One sell order is to realize the profit * The second to lock the loss, not to get even deeperQuantity and display instructions
A broker may be instructed not to display the order to the market. For example: * An "All-or-none" buy limit order is an order to buy at the specified price if another trader is offering to sell the full amount of the order, but otherwise not display the order. * A hidden (or " iceberg") order requires the broker to display only a small part of the order, leaving a large undisplayed quantity "below the surface".Electronic markets
All of the above order types are usually available in modern electronic markets, but order priority rules encourage simple market and limit orders. Market orders receive highest priority, followed by limit orders. If a limit order has priority, it is the next trade executed at the limit price. Simple limit orders generally get high priority, based on a first-come-first-served rule. Conditional orders generally get priority based on the time the condition is met. Iceberg orders and dark pool orders (which are not displayed) are given lower priority.See also
* Central limit order bookReferences
Further reading
*Larry Harris, Trading & Exchanges, Oxford Press, Oxford, 2003. Chapter 4 "Orders and Order Properties." *U.S. Securities and Exchange Commissio