You can't manage risk unless you know what your edge is, yet most investors focus on risk management formulas while making too many assumptions about their expected value.
Annie argues that risk management is downstream of knowing your edge (expected value). Jeff Yass's key concern is that people assume they're winning when they're actually losing, and they over-invest in complex risk formulas while neglecting the EV question.
transcript
Annie Duke: But again, the thing about all of this is that with risk, it's like you can't manage risk unless you know what your edge is. You have to know what your expected value is in order to be able to manage risk. And I think the big mistake that people make in investing is that you have risk managers and there are formulas that you can apply to risk. And I think they make an assumption about their expected value and they get really, really focused on the risk management side of things because it's a problem that I think is easier to solve. In other words, if you have an assumption about what your EV is and what the vol is, right, now you can actually just apply a formula and you can start to get into some sort of dive headlong into the risk management side of things. And that's Jeff Yass's point, is that he feels like people are making too many assumptions about the EV part. Just like what is your edge in the 1st place, right? And I think everybody comes in assuming they have an edge. And then they go to all of these risk management formulas, right? And he's like, I don't even care about that. Like, I'm just so afraid that I think I'm winning when I'm actually losing.
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