New here. A first attempt on trying out this platform is attached. The price history for ticker WAFD_W seems to cause major issues when backtesting attached algo. My algo is short the ticker on 2015-11-02, price is $7.88, then on 2015-11-03 somehow your price history has it that it ends up on $10'006.99, which seems erroneous when checking other sources of price history. This obviously sends the algo into huge negative territory and renders the backtesting chart unreadable. Anybody seen something similar? Solutions?
It does look like there is a single close price which is wrong
2015-11-03 14:31:00+00:00 10006.99
However, a bigger issue is how thinly traded this stock is. It only traded 4 minutes of the day on 2015-11-02 and once (this bad data point) on 2015-11-03. The backtester doesn't model these thinly traded stocks well at all. It's a good idea to filter your universe at a minimum to QTradeableStocksUS or more realistically Q1500US. That way you will get a more realistic test of your logic.
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