Flying Circus wrote: We've got SI Pro, P123, Zacks, Stockcharts, Fidelity to name just a few.

As discussed many times in the past it is very, very rare to find data that does not include major survivorship bias. I doubt very much any of those mentioned do not include this to some degree. This is why so much effort was put into the GTR1 backtester. It is absolutely survivorship bias free. And probably a small fraction of you who have used it all these years have even contributed a dime to it! Sad! I'm not referencing those that have, which I know is not a small number and I also the contributions have not been minor by any means. My point is this: You have access to data that far outpaces any of those sources and the thousands of others online. It seems prudent to express one's gratitude for this data with a contribution to Robbie that exceeds a mere thank you!

Mechanical Investing FAQ

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