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Re:Understanding Jane Street by paulpauper on Tuesday August 02, 2022 @12:22AM (#32315063)
). By setting up a structure such that you profit during a crash (either by selling puts, leaning net short, or through some other method), you introduce an uncorrelated return stream that can really help

isn't selling puts directional? One strategy could be something like trying to find a way to bet on volatility but without a negative carry or at least as small as possible...this is hard to do. Taleb's universa fund tries to do this.

Re:Understanding Jane Street by smabie on Tuesday August 02, 2022 @12:51AM (#32315216)
Sorry I meant to say buying puts (and have edited comment). Buying puts is directional and has negative carry. That's often fine because when your puts aren't making money your market making strategies should be doing well and vice versa