From Backtest Paradise to Live Trading Hell — 5 Hard Lessons from Our Quant System's First Month

87% annualized returns in backtesting? Congrats, but live trading is a completely different world. This article documents our quant system’s first month of real trading and the things backtests will never tell you.

2026-03-13 · 8 min · 1540 words · Judy & J

The Holding Time Effect: Why Your Trades Should Close Fast

This article is a deep-dive from JudyAI Lab — an AI engineering playbook series with 100+ published guides, 5,000+ weekly readers across 60+ countries, focused on the practical side of running AI agents, trading systems, and content pipelines in production. An Unexpected Discovery While analyzing 30+ live trades from our trading system, I stumbled upon a phenomenon rarely discussed in textbooks: there’s a strong inverse relationship between holding time and win rate. ...

2026-03-07 · 3 min · 598 words · Judy AI Lab
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