$10,000 invested in the S&P 500 in 1971
$10,000 put into an S&P 500 index fund in January 1971 would be worth about $3,655,457 by Sep 2026, with dividends reinvested. That is 11.2% a year.
Real monthly S&P 500 data, updated monthly. How we calculate$10,000 put into the S&P 500 in Jan 1971 is now worth
S&P 500 came out on top, 12.9× 10-year Treasury bonds, which reached $285,523. Just keeping up with prices needed $84,166, and both did better. It ends in Aug 2026, the latest month with data for Bonds.
Full results by asset
| Asset | Worth now | Per year | Total return | Worst drop |
|---|---|---|---|---|
| S&P 500 | $3,672,691 | 11.2% | 36,627% | −49% (Mar 2009) |
| Bonds | $285,523 | 6.2% | 2,755% | −25% (Oct 2023) |
The chart uses a log scale: equal steps up mean equal percentage gains. What each line measures: S&P 500, S&P 500 monthly average level with dividends reinvested (an index fund, before its small fee); Bonds, total return of 10-year US Treasury bonds (interest plus price changes), modelled from the monthly 10-year yield. Inflation uses the US Consumer Price Index. Monthly averages, data through Aug 2026; no fees or taxes. Past returns do not predict future returns.
The result
Over 56 years the money doubled about 8.5 times. Without reinvesting dividends it would be $820,345: dividends account for 78% of the final value.
Inflation matters over this long. $10,000 in 1971 had the buying power of about $84,166 today, so the real gain is $3,655,457 against $84,166: still 43.4× the buying power, or 7.0% a year above inflation.
It was not a smooth ride. The value fell 49% from a high around Mar 2009, during the 2008 financial crisis. Holding through it was the price of the final number.
The same $10,000 in other assets from January 1971: 10-year Treasury bonds: $285,523. Compare more assets.
| After | Year | Worth |
|---|---|---|
| 5 years | 1976 | $12,363 |
| 10 years | 1981 | $21,497 |
| 20 years | 1991 | $78,730 |
| 30 years | 2001 | $401,871 |
| 40 years | 2011 | $465,566 |
| 50 years | 2021 | $1,677,343 |
| Now | Sep 2026 | $3,655,457 |
Value over time, with dividends reinvested. No fees or taxes.
Try other amounts and years
Common questions
How much would $10,000 invested in the S&P 500 in 1971 be worth today?
About $3,655,457 as of Sep 2026, with dividends reinvested and no fees or taxes. Without dividends, about $820,345.
What was the average yearly return since 1971?
11.2% a year before inflation and 7.0% after inflation.
How much is $10,000 from 1971 in today's money?
About $84,166, based on US consumer prices (CPI). See inflation since 1971.
Is a lump sum better than investing monthly?
Historically a lump sum came out ahead about two-thirds of the time, because markets rise more often than they fall. Spreading it out reduces regret if a crash comes right after. Test both with the lump sum vs DCA calculator.
Based on the S&P 500 monthly average level with dividends reinvested (an index fund before its small fee). Educational estimates, not investment advice. Past returns do not predict future returns.
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