So Long Yahoo! And Thanks For All The Data!

A few months ago, Yahoo was bought by Verizon and soon after their free end-of-day stock data service was cut-off (without warning). That action affected a lot of companies and customers including EdgeRater users who relied on the Yahoo data provider to fetch data...

Backtesting Using External Data Fields

When backtesting stocks you often find the need to include data fields from external sources. For example, you might want to test a system that buys stocks that cross above their 20 EMA providing that they have also scored highly on a completely separate test. One...