$10,000 invested in the S&P 500 in 1988
$10,000 put into an S&P 500 index fund in January 1988 would be worth about $668,144 by Sep 2026, with dividends reinvested. That is 11.5% a year.
Real monthly S&P 500 data, updated monthly. How we calculate$10,000 put into the S&P 500 in Jan 1988 is now worth
S&P 500 came out on top, 7.3× the runner-up, Gold at $92,474. Bonds finished last at $72,534. Just keeping up with prices needed $28,952, and all of them 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 | $671,294 | 11.5% | 6,613% | −49% (Mar 2009) |
| Gold | $92,474 | 5.9% | 825% | −46% (Jul 1999) |
| Bonds | $72,534 | 5.3% | 625% | −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); Gold, gold monthly average price in US dollars per ounce; 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 39 years the money doubled about 6.1 times. Without reinvesting dividends it would be $306,164: dividends account for 54% of the final value.
Inflation matters over this long. $10,000 in 1988 had the buying power of about $28,952 today, so the real gain is $668,144 against $28,952: still 23.1× the buying power, or 8.5% 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 1988: 10-year Treasury bonds: $72,534; gold: $90,545. Compare more assets.
| After | Year | Worth |
|---|---|---|
| 5 years | 1993 | $20,459 |
| 10 years | 1998 | $50,982 |
| 20 years | 2008 | $85,238 |
| 30 years | 2018 | $213,094 |
| Now | Sep 2026 | $668,144 |
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 1988 be worth today?
About $668,144 as of Sep 2026, with dividends reinvested and no fees or taxes. Without dividends, about $306,164.
What was the average yearly return since 1988?
11.5% a year before inflation and 8.5% after inflation.
How much is $10,000 from 1988 in today's money?
About $28,952, based on US consumer prices (CPI). See inflation since 1988.
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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