Backtest
Run a strategy against the universe with point-in-time scores and configurable rebalance + transaction costs. Pro feature.
Point in time. Each rebalance uses only annual reports filed by that date and values each company at that day's close times its diluted share count from the latest filed report — never today's market cap.
Survivorship bias. The universe is the current S&P 500 at every date: companies that have since left the index are missing, and today's members are included even before they joined. Both flatter the results, by an amount not measured here.
New backtest
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