Replay a real historical market downturn against a real ticker. See the actual drawdown, recovery time, and whether continuing to DCA through the crash beat a lump-sum entry.
2007-10-09 → 2009-03-09
Invested on day one, at the pre-crash peak
Invested every month through the crash and recovery
Pick a downturn and run the simulation to see real historical price data and drawdown/recovery numbers.