STOCKS
COST
Costco Wholesale
How often this market makes each size of move, graded against its own history · to 31 August 2026
Daily moves
| Reading | Times | Share | |
|---|---|---|---|
| Max | 1 | 0.4% | |
| Very High | 2 | 0.8% | |
| High | 6 | 2.3% | |
| Moderate | 8 | 3.1% | |
| Low | 81 | 31.2% | |
| Very Low | 162 | 62.3% |
A Very High or Max day shows up about 2 times a year for COST — 3 times in the history we hold. The most recent was 9 Jul 2026, when it fell 4.2%.
Biggest moves on record
| When | Move | Reading |
|---|---|---|
| 9 Jul 2026 | −4.2% | Very High |
| 29 May 2026 | −3.9% | Very High |
| 8 Jan 2026 | +3.7% | High |
| 10 Apr 2026 | −3.3% | High |
| 16 Jul 2026 | +3.2% | Low |