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RH>> When I do that type of screen, I usually have a condition where it checks to make sure the value (e.g. P/S, P/E, whatever) is greater than some minimum value such as .01 or .05. That gets rid of companies with data that is missing, or might be negative, or whatever.

Steve>> So you only use the Zacks P/S? If the value is missing, the stock is not selected?

I use that technique in whatever screener I am using. I've only been using the Zacks screener a short time. But, yes, if Zacks did not have a P/S, the way I screen would not select the stock.

But that doesn't answer anything about how the backtest was done.
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