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A comment on Day Trading for a Living?. Parent comment

Re:Day Trading for a Living? by PorterDuff on Wednesday September 11, 2019 @10:48PM (#20947361)
As I remember the book, they back tested quite a lot. It's just that whenever they went live with trading reality changed on 'em. Go figure.
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Re:Day Trading for a Living? by simtel20 on Sunday September 15, 2019 @12:13AM (#20975541)
They were exposed to a margin call. Trading reality changing or no, if you can get taken out by your prime broker at the end of the day, you need to account for that too and they didn't.
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Re:Day Trading for a Living? by tim333 on Thursday September 12, 2019 @10:32AM (#20951878)
One thing backtesting misses is the other market participants may see what you are up to in live trading and try to take advantage. That was a big factor with LTCM.
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