Ross Stores Inc (ROST) implied move — live earnings data
As of August 17, 2026, the options market prices a ±7.3% earnings move for Ross Stores Inc (ROST)'s next report on August 20, 2026 (AMC). The implied move — also called the expected move — is derived from live options prices. Below: how it compares with what ROST has actually done on earnings day, report by report.
Updated August 17, 2026 · refreshed daily from live options data · methodology
ROST 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 ROST's earnings moves are distributed
| Percentile | 5th | 20th | Median | 80th | 95th |
|---|---|---|---|---|---|
| Move size | ±2.7% | ±3.7% | ±5.4% | ±9% | ±15.1% |
Recent regime: the 2-year average move (±8.3%) is hotter than the 10-year average (±7%).
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.
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For ROST 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.