We use Google Analytics cookies to see which calculators people use, so we can improve them. They’re only set if you accept — the calculators work either way. See our privacy policy.
Every rolling holding period since March 1957 — best, worst, average and inflation-adjusted, with dividends reinvested. The reference table below is regenerated from the underlying monthly data; quote any figure with attribution.
Coverage Mar 1957 – Jun 2026Span 69.3 yearsUpdated 2026-10-02
10.8% / yr
Nominal return since 1957
A £1,000 lump sum in March 1957 grew to £1,209,114 by Jun 2026 with dividends reinvested — about 1209× your money.
6.9% / yr
Real return (after US inflation)
In today's spending power the same £1,000 became £99,628 (99.6×). Real return is the honest measure of how much wealth actually grew.
100%
of 20-year periods positive
Every rolling 20-year window since 1957 made money even after inflation (worst 0.3%/yr real). The worst 30-year run still returned 4.2%/yr real.
CalculatorDashboard.com, “S&P 500 Rolling Returns Since 1957,” 2026-10-02. https://www.calculatordashboard.com/sp500-rolling-returns/
Rolling annualised returns by holding period
Nominal (dividends reinvested)
Mar 1957 – Jun 2026
Holding period
Worst
Average
Median
Best
% positive
Periods
1 year
-40.9%Apr 2008
12.0%
13.4%
60.2%Aug 1982
78%
821
3 years
-15.1%Apr 2000
10.9%
11.4%
32.5%May 1995
88%
797
5 years
-5.8%Apr 2004
10.6%
11.4%
29.7%Sep 1982
92%
773
10 years
-3.5%Apr 1999
10.3%
10.4%
19.3%Oct 1990
97%
713
15 years
3.8%Oct 2000
10.2%
9.9%
19.3%Aug 1984
100%
653
20 years
5.1%Apr 2000
10.3%
9.7%
17.9%May 1980
100%
593
30 years
9.3%Sep 1987
11.0%
10.7%
14.3%Aug 1970
100%
473
Real — inflation-adjusted (US CPI)
Mar 1957 – Jun 2026
Holding period
Worst
Average
Median
Best
% positive
Periods
1 year
-41.2%Nov 1973
8.1%
9.4%
56.3%Aug 1982
72%
821
3 years
-17.1%Apr 2000
7.0%
8.1%
29.5%May 1995
79%
797
5 years
-9.0%Oct 1969
6.7%
7.7%
25.7%Sep 1982
76%
773
10 years
-5.9%Apr 1999
6.3%
6.9%
16.1%Oct 1990
82%
713
15 years
-2.0%Sep 1967
6.1%
6.7%
15.6%Aug 1984
93%
653
20 years
0.3%Apr 1962
6.1%
5.8%
13.6%May 1980
100%
593
30 years
4.2%Feb 1965
6.8%
7.2%
8.9%Jan 1975
100%
473
The month under each worst and best figure is when that rolling window started.
Investments
S&P 500 rolling returns since 1957: what every holding period tells you
By CalculatorDashboard Editorial Team·Updated ·Reviewed ·4 min read
What the rolling-returns data shows
An average return hides the thing that actually decides investor outcomes: when you bought and how long you held. Rolling returns fix that. For each holding period below we take every possible start month since March 1957, compound the S&P 500's total return (dividends reinvested) over that window, and annualise it. The result is the full distribution of what really happened — not one smoothed number.
Three patterns stand out:
Time compresses the range. One-year returns ran from -40.9% to +60.2%. Stretch to 30 years and every window landed between +9.3% and +14.3% a year.
Long holds were reliably positive. 97% of 10-year periods and 100% of 20- and 30-year periods made money in nominal terms; every 20-year period was positive even after inflation.
Inflation is the real test. The worst real 10-year run lost about -5.9% a year (a start near the 2000 peak), yet the worst real 30-year run still compounded at 4.2% a year.
The classic "bad timing" case: a lump sum at the 2000 peak
Investing right before a crash is the scenario people fear most. A £1,000 lump sum placed in the S&P 500 at the start of 2000 — immediately before the dot-com collapse, and holding through 2008 as well — was still worth about £8,372 by Jun 2026 (8.4× your money, with dividends reinvested), and about £4,191 after inflation, over 26.5 years. The smooth headline hides two brutal drawdowns along the way, which is exactly why holding period matters more than entry point.
S&P 500 10-year, 20-year and 30-year rolling returns
10-year rolling returns averaged 10.3% a year (6.3% real) across 713 periods. The best decade began in Oct 1990 (19.3% a year); the worst began in Apr 1999 (-3.5% a year).
20-year rolling returns averaged 10.3% a year and were positive in every one of 593 periods; the weakest real 20-year run, from Apr 1962, barely beat inflation at 0.3% a year.
30-year rolling returns ranged from 9.3% to 14.3% a year, so even the unluckiest three-decade investor compounded at 4.2% a year above inflation.
For a fuller explanation — how rolling returns differ from annual and trailing returns, what monthly investing changes, and what these figures mean for UK investors (currency, fees, ISAs) — read the S&P 500 rolling returns guide.
Reading the table by holding period
The most useful way to read the table is down the "worst" column, after inflation. Over a single year, the worst real return since 1957 was -41.2%, for the year starting Nov 1973, and only 72% of one-year periods beat inflation. Stretch the holding period to ten years and the worst real result improves to -5.9% a year, for the decade starting Apr 1999, with 82% of decades positive. At twenty years, every period has beaten inflation; the worst returned 0.3% a year. At thirty years the worst was 4.2% a year.
The average barely changes as the period lengthens, staying around six to eight percent a year in real terms. What changes is the spread. Longer holding periods don't raise the typical return so much as narrow the range of outcomes around it.
Why rolling periods rather than calendar years
Most published returns use calendar years or a single start date, which hides how much luck is involved. A rolling analysis starts a new period every month and measures each one, so a 10-year row here summarises hundreds of overlapping decades rather than one. That makes it much harder to cherry-pick a flattering start date, and it shows the full range an investor could have experienced depending on when they happened to begin. It's also why the best and worst periods often start just after a crash or just before one: the start point does most of the work.
Using it to plan
If you'll need money within a few years, the one, three and five-year rows show how far shares have fallen over such periods, and why short-term money usually belongs in cash. For long-term goals, such as a pension twenty or thirty years away, the longer rows show why time in the market has historically mattered more than the start date. The rolling returns simulator lets you test your own contribution pattern against every period.
The figures are US-dollar returns with dividends reinvested, before fees and taxes. UK investors' results also depend on the exchange rate and the costs of the fund they use. Past returns don't guarantee future results. This is general information, not personal financial advice.
Data sources & methodology
This dataset is computed from the sources below. Figures are total returns with dividends reinvested; real (inflation-adjusted) figures use the US CPI deflator in the Shiller series. Percentages are currency-neutral; any £ amount is illustrative and excludes the US-dollar to pound exchange rate.
What is the average rolling return of the S&P 500?
Since March 1957 the S&P 500 has returned about 10.8% a year with dividends reinvested, or roughly 6.9% a year after US inflation. Averaged across every rolling 10-year window, the mean annualised return is 10.3% nominal (6.3% real).
Has the S&P 500 ever lost money over 20 years?
No. Every rolling 20-year holding period since 1957 has been positive, even after inflation — the worst returned about 0.3% a year in real terms. Over 10 years, 97% of periods were positive; the worst real 10-year run lost about -5.9% a year, starting near the 2000 market peak.
What was the worst 30-year period for the S&P 500?
Across every rolling 30-year window since 1957, the weakest still returned about 9.3% a year nominal and 4.2% a year after inflation — all 30-year periods were positive.
When did the best and worst S&P 500 10-year periods start?
The best rolling 10-year period started in Oct 1990 and returned 19.3% a year. The worst started in Apr 1999 and returned -3.5% a year, as the dot-com bust and the 2008 financial crisis fell inside the same decade.
How are S&P 500 rolling returns calculated?
For each start month, the monthly total-return factors (price change plus reinvested dividends) are compounded across the holding period and annualised: growth to the power of 1 ÷ years, minus 1. The window then moves forward one month and the calculation repeats, giving one result per possible start date. Our rolling returns guide walks through it in detail.
Disclaimer: This is a factual historical dataset for information and education, not financial advice or a forecast. Past performance is not a guide to future returns. Figures use the S&P 500 total-return series (dividends reinvested) from March 1957; real figures are deflated by US CPI. Returns shown are currency-neutral percentages — any £ amount is illustrative and ignores platform and fund fees, taxes, and the US-dollar to pound exchange rate that affects UK investors. Always consult a qualified, regulated financial adviser before investing. CalculatorDashboard.com is not regulated by the FCA.