What if you invested in Costco in 2020?
COST · Consumer · Data through 2026-06-01
If you invested $1,000 in Costco in 2020
The same $1,000 in the S&P 500 would be worth $2,540(+154%)
The S&P 500 returned $2,540 on the same $1,000. Costco beat the market by $819.
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See how Costco stacks up since 2020, head to head.
What if Costco keeps this up?
Project forward at Costco's 20.2% historical growth rate. See 5-30 year scenarios.
Growth of $1,000
Costco vs. S&P 500 vs. US Dollar, 2020 to present
Year-by-Year Returns
$1,000 invested in Costco starting January 2020
| Year | Price | Value | Annual |
|---|---|---|---|
| 2020 | $278.54 | $1,000 | - |
| 2021 | $332.52 | $1,194 | +19.4% |
| 2022 | $480.23 | $1,724 | +44.4% |
| 2023 | $489.20 | $1,756 | +1.9% |
| 2024 | $685.33 | $2,460 | +40.1% |
| 2025 | $972.05 | $3,490 | +41.8% |
| 2026 | $937.61 | $3,366 | -3.5% |
What this return means
A $1,000 stake in Costco (COST) from 2020 has grown to $3,358. That is a +235.8% gain, a little over 3.4x your money, measured to 2026-06-01.
In compound terms that is roughly 20.2% a year, well above what a broad index has historically returned. A plain S&P 500 fund would have turned that $1,000 into about $2,540 instead, leaving Costco ahead by around $819. The index compounded at about 15.2% a year over that period.
The year-by-year record shows how bumpy the ride was. The best single year was 2022 at +44.4%, and the worst was 2023 at +1.9%. These figures use split-adjusted closing prices and exclude dividends, taxes, trading fees, and inflation, so a real after-tax result would differ.
Treat this as history rather than advice. Past performance does not guarantee future results.
What if you invested $100 a month instead?
Most people do not drop a lump sum in on day one. They add a fixed amount every month. Putting $100 into Costco at the close of every month from January 2020 through June 2026 means 78 buys and $7,800 contributed over about 6.5 years.
$100/month, dollar-cost averaged
$14,267
+82.9% on $7,800 in
Same $7,800, all in at the start
$26,196
+235.8% on $7,800 in
Going all in at the start beat spreading the buys out by $11,929. That is the usual result when a stock trends up: each monthly buy pays a higher price than the last, so the average cost climbs. Averaging in also meant an average buy price of $511.42 per share across the whole stretch, so the monthly buyer never had to time a single low. Neither number counts dividends, taxes, or trading costs.
Illustrative fixed $100/month example, not a recommendation. Figures are computed from COST split-adjusted monthly closes through June 2026. Past performance does not guarantee future results.
Costco at different times
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For informational and educational purposes only. Not financial advice. Past performance does not guarantee future results. All calculations are based on split-adjusted closing prices from Yahoo Finance and do not account for dividends, taxes, or trading fees. See our methodology and full disclaimer.