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What if I had invested in the S&P 500

Every lump sum scenario for the S&P 500, start year by start year, using real prices and each month's exchange rate.

Prices updated on September 21, 2026

If I had invested $1,000 as a lump sum in the S&P 500 in January 2016, today I would have $3,804

Value in September 2026
$3,804
×3.8
Invested
$1,000
Gain
+$2,804
Annual return
+13.2%
compounded, over 10.8 years
01K2K3K4K5K201620182020202220242026
S&P 500 (US)MSCI WorldUS Treasury billsAmount invested

Over the same period

S&P 500 (US)
$3,804
The same amount in the MSCI World
$2,996
In US Treasury bills
$1,275
Amount invested
$1,000

Worst moment: −24.8% between December 2021 and September 2022. To get this result, you had to hold on without selling.

S&P 500 (US) at a glance

The S&P 500 tracks the 500 largest US-listed companies, weighted by market capitalization. US stocks make up about 70% of the MSCI World, which is why the two curves look so alike.

$1,000 invested in the S&P 500, by start year

Bought in January, valued at the latest price. Click a year for the full story.

StartWorth todayMultiplePer year
2025$1,322 ×1.32 +17.3%
2024$1,630 ×1.63 +19.4%
2023$2,025 ×2.02 +20.7%
2022$1,631 ×1.63 +10.9%
2021$2,070 ×2.07 +13.5%
2020$2,406 ×2.41 +13.9%
2019$3,101 ×3.1 +15.7%
2018$2,908 ×2.91 +13.0%
2017$3,473 ×3.47 +13.6%
2016$3,804 ×3.8 +13.2%
2015$3,776 ×3.78 +12.0%
2014$4,206 ×4.21 +11.9%
2013$5,451 ×5.45 +13.1%
2012$6,182 ×6.18 +13.1%
2011$6,182 ×6.18 +12.3%
2010$6,972 ×6.97 +12.3%
2009$8,607 ×8.61 +12.9%
2008$5,295 ×5.29 +9.3%
2007$5,482 ×5.48 +9.0%
2006$6,228 ×6.23 +9.2%
2005$6,415 ×6.42 +8.9%
2004$6,992 ×6.99 +8.9%

Lump sum or DCA in the S&P 500?

Since January 2016, investing in the S&P 500 all at once (lump sum) multiplied the stake by ×3.8, +13.2% a year. Investing every month (DCA) multiplied the total contributions by ×2.24, an annual return (IRR) of +14.2%.

Here DCA did better: spreading the purchases avoided putting all the money in at the wrong time.

What about investing $100 every month in the S&P 500?The same asset with monthly contributions (dollar-cost averaging), start year by start year.

Frequently asked questions

How much would $1,000 invested in the S&P 500 10 years ago be worth today?

$1,000 invested in the S&P 500 in January 2016 would be worth about $3,804 today, an average annual return of +13.2% (price only, in the displayed currency).

What if I had invested $1,000 in the S&P 500 in 2015?

Invested in January 2015, $1,000 would be worth about $3,776 today, +12.0% a year on average.

What if I had invested $1,000 in the S&P 500 in 2020?

Invested in January 2020, $1,000 would be worth about $2,406 today, +13.9% a year on average.

What was the best year to invest in the S&P 500?

Among the start years covered, 2009 gave the best result: $1,000 would have become $8,607. The weakest was 2025, worth $1,322 today. This ranking is only known with hindsight.

Are dividends included?

By default, the calculation follows the market price only. The "Reinvest dividends" option uses the adjusted price, which includes dividends paid and stock splits: the closest measure of what an investor actually earned.

Are exchange rates taken into account?

Yes. The S&P 500 trades in its own currency; every purchase and valuation is converted at that month's exchange rate. A US asset can gain in dollars and less in euros if the dollar weakened.

Are fees and taxes included?

No: results are before brokerage fees, fund fees and taxes. Your net result depends on the account you invest through.

Compare with

Before you have regrets

What this calculation does not tell you.

Hindsight bias

Picking Nvidia or Bitcoin today means picking known winners. Back then, nothing set them apart from hundreds of assets that went nowhere or vanished.

Holding on was the real test

The result assumes you never sold, including through the drawdowns shown above. Very few investors actually do.

The broad market, no bet required

The MSCI World never makes headlines, but it does not require guessing the winner. It is the fairest yardstick for any pick.

Past performance, computed from monthly closing prices (intra-month lows are smoothed out). Converted at each month’s exchange rate; no fees, no taxes. The MSCI World benchmark is the price index, excluding dividends. Not investment advice. NokxiHub.