Pre-market price movements and significant market activity for O'Reilly Automotive, Inc. ($ORLY). Each move is flagged by Z-score statistical significance — showing when $ORLY moved beyond its typical daily range. 3 significant moves detected in the last 30 days.
Current Market State
What May Be Driving ORLY?
ORLY rose 3.59% on high volume following news of its record 232-store expansion plan for 2026.
O'Reilly Automotive, Inc. operates in the Cons Cyclical sector, specifically Retail-Auto & Home Supply Stores. Sector-wide movement can contribute to individual stock volatility.
Recent Unusual Moves (30 days)
| Date | Session | Price | Move | Z-Score | Rel. Vol. |
|---|---|---|---|---|---|
| Sep 22, 2026 | Regular | $86.48 | +4.34% | 3.90 | 0.9× |
| Sep 22, 2026 | After-hours | $85.89 | +3.63% | 3.34 | 1.5× |
| Sep 16, 2026 | Pre-market | $85.16 | +2.17% | 2.01 | — |
About ORLY Premarket Movers
This page tracks unusual market activity for O'Reilly Automotive, Inc. (ORLY) across all trading sessions — pre-market (4:00 AM–9:30 AM ET), regular hours (9:30 AM–4:00 PM ET), and after-hours (4:00 PM–8:00 PM ET). A move is flagged as "unusual" when its Z-score reaches 2 or higher, meaning the price change is statistically significant relative to ORLY's recent daily volatility.
Z-score is calculated by comparing each move to the 20-day average return and standard deviation. A Z-score of 2.0 means the move is 2 standard deviations beyond the average — occurring in roughly the top 5% of daily moves. Relative volume (RVOL) compares current volume to the 20-day average volume at the same time of day, helping distinguish genuine institutional activity from noise.