Comparison
What if you invest $500/month vs $1,000/month?
Same start date, same S&P 500 path — double the monthly contribution and see contributions, ending value, and SteadyGrow sizing.
| $500/month | $1,000/month | |
|---|---|---|
| Window | 2015-01-02 → 2026-08-28 | 2015-01-02 → 2026-08-28 |
| Contributed | $70,266 | $140,539 |
| Blind DCA value | $183,488 | $366,992 |
| SteadyGrow | $237,645 | $475,311 |
$500/month
2015-01-02 → 2026-08-28
$500/month · Monthly DCA · S&P 500
Contributed$70,266
Blind DCA value$183,488
Return+161.1%
SteadyGrow value$237,645
vs blind DCA+$54,157
Lump sum (same capital)$317,564
S&P 5002015-01-02 → 2026-08-28 · $500/month
+$54,157 vs blind (+29.5%)Ended +29.5%
Blind DCASteadyGrow
What if your contribution wasn't always the same?
Blind DCA deploys $500/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.
$1,000/month
2015-01-02 → 2026-08-28
$1000/month · Monthly DCA · S&P 500
Contributed$140,539
Blind DCA value$366,992
Return+161.1%
SteadyGrow value$475,311
vs blind DCA+$108,319
Lump sum (same capital)$635,155
S&P 5002015-01-02 → 2026-08-28 · $1000/month
+$108,319 vs blind (+29.5%)Ended +29.5%
Blind DCASteadyGrow
What if your contribution wasn't always the same?
Blind DCA deploys $1000/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.