How would a trader revealing their strategy damage their personal returns? I've never understood this argument.
The stock market is not as deep as you think.
Too much publicity causes edges to go away.
And sometimes there may be only a 500 shares available at a price and ooops... that trader you just gave your method and stock list to just beat you too them and a week later your method is too crowded to work.
Peter told Paul who told Suzy. Or Sally is a slugger doing large size Or Tom automates and does large size and so do his friends.. well... you get the idea.
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