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NaN values in stock data

I am trying to backtest an algorithm with data from 2014 and on March 17, 2014 I get values of NaN. See attached algorithm, when back test is set to run in minute mode from March 18, 2014. This particular example uses XOM stock, but the same happens with other NYSE stocks (I also tried GE). At the end of InitFeatures, the array stockPrices has "nan" values.

Any ideas of what is going on and how to fix it?

Thanks!

2 responses

Hi Pavlin,

This looks like a data error. I've made an internal issue, we'll have to get it fixed. Thanks for reporting it!

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Same happens for SODA and OVTI tickers on Nov 7th 2011 at 2pm .. These stocks were actually selected from Q500US