Data Trends for Investment Professionals


China Stock Data

China Stock Data Quandl has a comprehensive and accurate collection of Chinese stock market data. Data coverage includes stock fundamentals, financial ratios, and key indicators for thousands of Chinese companies. Stock prices on the Shenzhen and Shanghai exchanges, stock indexes, securities master data, and other related databases will be added to Quandl soon. Stock Fundamentals Data Quandl's DY1 database, published by DataYes, is the most comprehensive and accurate source of Chinese stock fundamentals data. This database provides current and historical data for 150 key fundamental indicators and financial ratios for more than 2900 Chinese companies trading at the Shanghai and...

API for China Data

API for China Data Quandl provides a single easy-to-use API for Chinese market, economic, industrial, and social data. Coverage includes China's stock market, GDP, unemployment, inflation, interest rates, stock fundamentals and many other socioeconomic indicators. (more…)

API for Bitcoin Data

Using the Quandl API for Bitcoin Data This document is a comprehensive guide to using the Quandl API to access our free bitcoin data. If you haven't already done so, we recommend reading Quandl's general API documentation; the functionality will be a lot clearer if you do so. Free Unlimited API for Bitcoin Data Quandl offers free Bitcoin exchange rates for 30+ currencies from a variety of exchanges. Quandl's simple API gives access to Bitcoin exchanges and daily Bitcoin values. With numerous software packages, including R and Python, Quandl is the easiest way to find and download historical Bitcoin prices....

Using Quandl in R

Our mantra here at Quandl is making data easy to find and easy to use. Following that goal we (and subsequently the community) have created packages that integrate Quandl’s API into a number of software platforms. Today we’ll take a look at R. R is a free statistical computing language created in 1993 based on an implementation of the S computing language. It has many packages written by its community which keep its methods on the cutting edge of statistical analysis. Quandl’s API wrapped within R makes the tedious aspects of getting data into your console trivial, and gets you...

The Travails of the Closed Data Industry in an Open Data World

For decades, the Reuters corporation famously owned one share of every publicly-traded company in America. This was not an investment strategy of course. It was simply to ensure that they received quarterly and annual reports from every public company in the country. From these documents they meticulously extracted quantitative corporate facts. This exercise empowered them to sell a well-organized compilation of company data to clients. In the decades before the ascent of the Internet, Reuters provided an invaluable service: they delivered easy access to information that, although public in nature, was difficult to find and use. Reuters built a strong...

Quandl as Yahoo Redux

In 1994 Jerry Yang and David Filo evolved their directory of web sites into something they called “Yet Another Hierarchical Officious Oracle” which of course acronyms to “YAHOO”. Originally, Yahoo was a human-maintained directory of websites. Through the mid 1990s, every site indexed by Yahoo was evaluated and summarized by a human being. A search on Yahoo in 1995 presented a user not only with links (like a modern search engine does), but with a summary and commentary of each web site. For the period of time that Yahoo could keep up with the growth of the web, it was...

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