What if · since 2021 · S&P 500
What if I invested $250 every month in S&P 500 since 2021?
How much would $250 monthly into S&P 500 since 2021 be worth? Blind DCA vs adaptive contributions.
2021-01-01 → 2026-08-28
$250/month · Monthly DCA · S&P 500
Contributed$17,076
Blind DCA value$27,926
Return+63.5%
SteadyGrow value$32,261
vs blind DCA+$4,335
Lump sum (same capital)$37,836
S&P 5002021-01-01 → 2026-08-28 · $250/month
+$4,335 vs blind (+15.5%)Ended +15.5%
Blind DCASteadyGrow
What if your contribution wasn't always the same?
Blind DCA deploys $250/month every period. SteadyGrow keeps the same long-term habit but sizes weeks from valuation and regime — more when markets are cheap, less when they're stretched.