piotroski
Piotroski F-Score Backtest: What 32 Years of US Data Actually Show
An accounting professor created a nine-point checklist to separate winning value stocks from future bankruptcies. We ran it on US equities from 1985 to 2025. The high-quality basket (Score 8-9) returned 10.6% annually with a Sharpe of 0.297. The low-quality basket (Score 0-2) returned 10.9% with a