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Scenarica's avatar

The migrate-to-the-middle logic is right, with one twist. the middle is appealing only because it's the band the convergence hasn't competed away yet. Everyone arriving is what closes it. Mid-frequency stays uncrowded right up until it's the consensus, and this flurry is the sound of it becoming the consensus.

Crowding is the obvious cost. The quieter one is correlation. When prop shops and stat-arb funds poach the same researchers and run the same ML over the same horizon, they stop being different strategies and turn into one strategy with several letterheads.

Which is fine until something forces the middle to delever at once. A room full of near-identical positions behaves beautifully until one of them blinks. August 2007 was that movie, and the cast is bigger now.

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