$1,000 invested in Costco (COST) at its Jul 9, 1986 close, the earliest in the price history used here, was worth $151,415.76 at the Nov 13, 2026 close, 151 times the amount, on adjusted closing prices with dividends reinvested.
Past results for the start dates shown. Not a recommendation or a forecast.
| Period | From | $1,000 became | Growth per year | Worst fall | Same $1,000 in the S&P 500 | Rerun with other dates |
|---|---|---|---|---|---|---|
| Since 2000 | Jan 3, 2000 | $37,429 | 14.4% | -53.4% | $8,298 | Rerun it |
| Since the dot-com peakS&P 500 closing high, 24 Mar 2000 | Mar 24, 2000 | $30,916 | 13.7% | -53.4% | $7,839 | Rerun it |
| Since the dot-com crash lowS&P 500 closing low, 9 Oct 2002 | Oct 9, 2002 | $54,699 | 18.1% | -48.0% | $14,936 | Rerun it |
| Since the 2007 peakS&P 500 closing high before the 2008 crash, 9 Oct 2007 | Oct 9, 2007 | $25,428 | 18.5% | -48.0% | $6,821 | Rerun it |
| Since the 2008 crash lowS&P 500 closing low, 9 Mar 2009 | Mar 9, 2009 | $41,223 | 23.4% | -31.4% | $15,222 | Rerun it |
| Since 2010 | Jan 4, 2010 | $26,392 | 21.4% | -31.4% | $8,941 | Rerun it |
| Last 10 years | Nov 14, 2016 | $8,601 | 24.0% | -31.4% | $4,078 | Rerun it |
| Since the COVID lowS&P 500 closing low, 23 Mar 2020 | Mar 23, 2020 | $4,254 | 24.3% | -31.4% | $3,699 | Rerun it |
| Last 5 years | Nov 12, 2021 | $2,257 | 17.7% | -31.4% | $1,726 | Rerun it |
| Since the 2022 lowS&P 500 closing low, 12 Oct 2022 | Oct 12, 2022 | $2,490 | 25.0% | -20.7% | $2,228 | Rerun it |
| Last 1 year | Nov 13, 2025 | $1,203 | 20.3% | -18.2% | $1,135 | Rerun it |
Through the Nov 13, 2026 close, Costco's (COST) deepest fall was 61.7%, from its Aug 29, 1991 high to its Jan 11, 1995 low. It was back at that high on May 9, 1997, 2 years and 3 months after the low. Prices are adjusted for stock splits and reinvested dividends.
The same $1,000 from Nov 14, 2016 to Nov 13, 2026: all at once, spread monthly, or bought after 10% falls.
At its first close on Jul 9, 1986, $1,000 put into Costco (COST) was worth $151,415.76 at the Nov 13, 2026 close, 13.2% a year.
Bought on Mar 24, 2000, the S&P 500's dot-com peak, $1,000 in Costco (COST) was worth $30,915.54 at the Nov 13, 2026 close, 13.7% a year.
At the S&P 500's 2008-crash low on Mar 9, 2009, $1,000 put into Costco (COST) grew to $41,223.33 by the Nov 13, 2026 close, 23.4% a year.
From the Mar 23, 2020 close, the S&P 500's COVID low, $1,000 in Costco (COST) became $4,253.59 by the Nov 13, 2026 close, 24.3% a year.
Ten years ago, on Nov 14, 2016, $1,000 in Costco (COST) became $8,601.30 by the Nov 13, 2026 close.
$2,256.76 is what $1,000 put into Costco (COST) on Nov 12, 2021 was worth at the Nov 13, 2026 close.
Buying $100 of Costco (COST) on the trading day nearest the 1st of each month, 121 times from Nov 1, 2016 ($12,100.00 in total), came to $41,602.56 at the Nov 13, 2026 close.
2 years and 3 months: Costco (COST) hit its low on Jan 11, 1995 and closed back at its Aug 29, 1991 high on May 9, 1997.
Data: Costco's daily closing prices from Jul 9, 1986 to Nov 13, 2026, adjusted for stock splits and with dividends reinvested. Each figure is $1,000 invested at one day's close and valued at the Nov 13, 2026 close; a start date that is not a trading day uses the nearest one. Monthly buys are on the trading day nearest the 1st of each month. Event dates are S&P 500 closing highs and lows, found in the S&P 500 index fund SPY's prices. Its four big falls run from closing high to closing low: dot-com, Mar 24, 2000 to Oct 9, 2002; 2008, Oct 9, 2007 to Mar 9, 2009; COVID, Feb 19 to Mar 23, 2020; 2022, Jan 3 to Oct 12, 2022. A stock's deepest fall is placed in one of them only when its low falls inside those dates. The S&P 500 column is the same $1,000 in the SPDR S&P 500 ETF Trust (SPY) over the same dates. Not included: taxes, fees and trading costs. Figures start at the first close in the price history, not at an offer price set before trading began.
How and why: SmartFin computes every figure on this page automatically from those prices after each trading day, with the same engine as Stock Returns Over Time, so that each one can be checked against the prices and rerun. No figure is typed by hand.
Closing price: “the last price at which a stock trades during a regular trading session” (Investor.gov, SEC).
Stock split: “An increase in the number of shares of a corporation's stock” (Investor.gov, SEC).
Dividends reinvested: “cash dividends you receive from the company automatically reinvested into more shares” (Investor.gov, SEC).
Monthly (dollar-cost averaging): “investing your money in equal portions, at regular intervals” (Investor.gov, SEC).
All at once: the whole amount invested at one day's close.
Total return: the change in value as a percentage of the amount invested.
Growth per year (CAGR): the constant yearly rate that turns the amount invested into the final value, final ÷ invested, raised to the power 1 ÷ years, minus 1, with years counted as days ÷ 365. For monthly buys, the IRR: the yearly rate at which every buy, from its own date, grows to the final value.
Worst fall (max drawdown): the largest drop from a closing high to a later close.
SmartFin. "What if you invested in Costco (COST)?" Figures as of the Nov 13, 2026 close. https://smartfin.fyi/stocks/cost
Figures change every trading day, so cite the as-of date with any figure. Reproduce these figures: Stock Returns Over Time reruns $1,000 from Jul 9, 1986 on the same prices, to the latest close in Nov 2026; each row of the table above has its own link.
This page presents historical market data and calculated results for a defined period. It is not a recommendation to buy, sell, or hold the security, fund, or index shown. Past performance is not indicative of future results.