Costco (COST) earnings on Dec 10, 2026: date and past stock reactions
In brief
Costco reports on Dec 10, 2026. The quarter's results will appear on this page the night after publication. The previous report, on Sep 24, 2026, met a −1.1% gap and a +2.9% day. The stock is now 2.8% below its 52-week high, +14.3% over 12 months.
Price reaction to earnings
| Report | Gap | Day |
|---|---|---|
| May 28, 2026 | −0.9% | −3.9% |
| Sep 24, 2026 | −1.1% | +2.9% |
Next-quarter estimates, ratings and the COST chart are in the terminal.
Open the terminalFAQ
When is Costco's next earnings report?
Dec 10, 2026. The date comes from daily data and is corrected if the company moves it.
What is an earnings gap?
The jump between the close before and the open after the report. A big gap up often means large buyers are revaluing the company.