Costco Wholesale (COST) Stock Backtest
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A $1,000.00 investment in Costco Wholesale (COST) on 1986-07-09 would be worth $134.31K as of 2026-06-05. That is a total return of +13331% over roughly 39.9 years, holding 136.4591 shares (dividends reinvested, splits adjusted). The compound annual growth rate (CAGR) was +13.1% per year. Along the way the position saw a maximum drawdown of -61.7% from its running peak. All figures are computed from real split- and dividend-adjusted daily closes (source: Yahoo Finance), not estimates.
| Invested | $1,000.00 on 1986-07-09 |
| Value today | $134.31K (as of 2026-06-05) |
| Total return | +13331% |
| CAGR (per year) | +13.1% |
| Max drawdown | -61.7% |
| Shares held | 136.4591 |
Source: autario.com/data/stock-cost-costco-daily-prices (Yahoo Finance, split- and dividend-adjusted) | data verified and hosted on autario.com.