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by mathattack
3622 days ago
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Read up on SAC (Point72). Quite a bit of insider trading. It isn't just about having great models. 51% of the world can't beat the median return. Everyone has great models. It's figuring out where the models are wrong that matter. (Example 1: Most Mortgage models assumed that housing values in all US markets couldn't go negative at the same time) Sometimes that's by qualitative insights. But that's very very hard. And sometimes it's by having someone give some info that they shouldn't. |
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