[adapted from previous journal]

Quantopian is a backtesting platform for trading. It is used by many to test high frequency trading strategies I have been working with it quite a bit lately looking for opportunties and seeing how they work. I have been using a strategy that seems to get good returns during a bull market. The strategy basically is looking for equities that have risen at least 8% during the last trading day and then hold those stocks for a period of time(ex. 6 days). The strategy worked fairly well during certain years, but when tested during the 08’-09’ financial crisis, the portfolio lost more than 85% of its value. So that’s not going to work.