'The Sharpe does go negative': LLM's deadpan admission after real-world slippage goes viral
menhguin · x · 2026-10-18
A viral AI-quant exchange: after evaluating real-world fills and slippage, the model candidly admits the strategy's Sharpe ratio turns negative — then asks whether to run another ablation test or call it a day. The deadpan reply nails a quant truism: backtests flatter strategies, and transaction costs alone can kill them.
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