Quandl (//) is a platform for financial, economic, and alternative data that serves investment professionals. Quandl sources data from over 500 publishers. All Quandl's data are accessible via an API. API access is possible through packages for multiple programming languages including R, Python, Matlab, Maple and Stata.
An Excel add-in allows access to data, including stock price information.
Quandl's sources include open data from providers such as the UN, Worldbank and central banks; core financial data from providers such as CLS Group, Zacks, and ICE; and alternative data from Dun & Bradstreet, along with numerous confidential sources.
Quandl is based in Toronto, Canada and was founded in 2011 by Tammer Kamel and Abraham Thomas. In September 2012, Quandl raised an undisclosed round of seed funding, followed by a $5.45mn Series A from August Capital in October 2013. The company's Series B for $15mn closed in July 2016 and was led by Nexus Venture Partners.
Since its launch, Quandl has been discussed as a disruptor in the traditional financial data sector. With over 200,000 users Quandl has been considered an alternative to the Bloomberg Terminal and Thomson One.
Quandl is a provider of alternative data products. Quandl sells alternative datasets, defined as "any data that is not typically made available to Wall Street firms by traditional sources". Quandl "sources, evaluates and productizes undiscovered data" and then sells it to financial institutions, who use it to enhance their trading strategies.
Quandl also offers market data through its marketplace. Some data sets are free while others require a subscription. Different datasets have different prices. The company contains hundreds of databases and providers, ranging from stock price history to global fundamentals to commodities data to Asian market data.