Built a trading bot, then disproved it
01 — Built it62% win rateLLM agents, live broker over MCP
02 — Tested itIC 0.006Bull-market beta, not skill
03 — Rebuilt itIC 0.13Momentum, holds out-of-sample
Equity curve · strategy vs market
Walk-forward · net of 35 bps
Strategy
Market (S&P 500)
Total return—
Excess vs S&P—
OOS info coefficient—
t-stat—
No edge
Win rate was bull-market beta, not skill.