Costco (COST) implied move — live earnings data
Costco (COST)'s next earnings date isn't confirmed in our dataset yet. Historical context below; live implied move appears here once options price the next report. The implied move — also called the expected move — is derived from live options prices. Below: how it compares with what COST has actually done on earnings day, report by report.
Updated August 11, 2026 · refreshed daily from live options data · methodology
COST implied vs actual earnings moves
Each report: what options priced in beforehand (purple) vs the actual peak intraday move (green when it beat implied, grey when it stayed inside).
How COST's earnings moves are distributed
| Percentile | 5th | 20th | Median | 80th | 95th |
|---|---|---|---|---|---|
| Move size | ±1.8% | ±2.3% | ±3.5% | ±5% | ±7.7% |
Recent regime: the 2-year average move (±3.9%) is cooler than or in line with the 10-year average (±3.9%).
What is an implied move?
The implied move is the size of the earnings-day move the options market is pricing in, derived from the at-the-money straddle expiring just after the report. It is a market price, not a forecast. Learn more: how to calculate the implied move, or try the expected move calculator. After the report, options typically reprice sharply — the IV crush calculator shows what an option is worth once implied volatility resets.
This page is the free layer. Members get the decision layer.
For COST and every stock on the calendar: beat probability against today's implied move, an IV-crush forecast for the morning after, a straddle simulator for this exact report, and the live IV-rush radar — the same data pipeline behind this page, pointed at your trades.