Archetype
Balanced
Median daily return
+0.000%
Daily volatility (σ)
2.046%
Win rate
49.2%
Current streak
1-day red streak
Costco (COST) daily session stats — win rate & streak summary
History from Jul 10, 1986 through Jul 6, 2026 · 10073 trading days with returns.
Avg daily return | +0.084% |
Median daily return | +0.000% |
Avg green day | +1.50% |
Avg red day | -1.41% |
Daily volatility (σ) | 2.046% |
Consistency (μ/σ) | 0.041 |
Max win streak | 14 days+11.59% |
Max losing streak | 9 days-8.52% |
Best day | +15.00%Mar 15, 2000 |
Worst day | -22.52%Oct 26, 1987 |
Extreme days (>3%) | 11.2%626↑ · 500↓ |
Costco (COST) daily returns calendar heatmap
Jul 7, 2025 – Jul 6, 2026 · Mon–Fri sessions only
Costco (COST) average return by weekday chart
Average dividend-adjusted return on that weekday (green / red by sign). Green/red day rule: ±0.01% vs prior close.
Costco (COST) win rate by weekday chart
Share of sessions that closed green on that weekday. Bars are green at or above 50%, red below 50%.
Costco (COST) average return by weekday table
Average dividend-adjusted return by weekday. Green/red day rule: ±0.01% vs prior close.
| Monday | -0.02% | +47.6% | 1900 |
| Tuesday | +0.13% | +50.8% | 2067 |
| Wednesday | +0.15% | +50.4% | 2065 |
| Thursday | +0.12% | +48.7% | 2026 |
| Friday | +0.03% | +48.3% | 2015 |
- Monday-0.02%
- Tuesday+0.13%
- Wednesday+0.15%
- Thursday+0.12%
- Friday+0.03%
Costco (COST) biggest single-day gains in history
Dividend-adjusted, ranked by return size.
| +15.00% | |
| +14.42% | |
| +13.60% | |
| +12.90% | |
| +12.71% | |
| +12.34% | |
| +11.81% | |
| +11.71% | |
| +11.31% | |
| +10.83% | |
| +10.77% | |
| +10.76% | |
| +10.70% | |
| +10.57% | |
| +10.53% | |
| +10.44% | |
| +9.96% | |
| +9.90% | |
| +9.76% | |
| +9.49% |
- +15.00%
- +14.42%
- +13.60%
- +12.90%
- +12.71%
- +12.34%
- +11.81%
- +11.71%
- +11.31%
- +10.83%
- +10.77%
- +10.76%
- +10.70%
- +10.57%
- +10.53%
- +10.44%
- +9.96%
- +9.90%
- +9.76%
- +9.49%
Costco (COST) biggest single-day losses in history
Dividend-adjusted, ranked by drawdown size. "Days to recovery" counts trading sessions until close reclaimed the prior peak.
| -22.52% | 4 | |
| -21.53% | 153 | |
| -18.66% | 101 | |
| -12.93% | 54 | |
| -12.45% | 32 | |
| -11.91% | 599 | |
| -11.88% | 1253 | |
| -11.60% | 1010 | |
| -11.51% | 19 | |
| -11.32% | 5 | |
| -10.56% | 12 | |
| -10.46% | 12 | |
| -10.12% | 11 | |
| -9.47% | 7 | |
| -9.45% | 1 | |
| -9.30% | 6 | |
| -8.74% | 18 | |
| -8.62% | 5 | |
| -8.59% | 56 | |
| -8.21% | 231 |
- -22.52%
- -21.53%
- -18.66%
- -12.93%
- -12.45%
- -11.91%
- -11.88%
- -11.60%
- -11.51%
- -11.32%
- -10.56%
- -10.46%
- -10.12%
- -9.47%
- -9.45%
- -9.30%
- -8.74%
- -8.62%
- -8.59%
- -8.21%
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