Unusual price movements and significant market activity for Bristol-Myers Squibb Co. (BMY). Each move is flagged by Z-score statistical significance — showing when BMY moved beyond its typical daily range. 3 significant moves detected in the last 30 days.
Current Market State
What May Be Driving BMY?
No specific catalyst has been identified in the available market data for Bristol-Myers Squibb Co. (BMY). The moves shown below are flagged based on statistical significance (Z-score ≥ 2), meaning BMY moved beyond its typical daily range. A catalyst may exist — such as earnings, analyst action, sector momentum, or news — but has not yet been tagged to this ticker.
Bristol-Myers Squibb Co. operates in the Healthcare sector, specifically Drug Manufacturers - General. Sector-wide movement can contribute to individual stock volatility.
Recent Unusual Moves (30 days)
| Date | Session | Price | Move | Z-Score | Rel. Vol. |
|---|---|---|---|---|---|
| Aug 5, 2026 | Regular | $63.73 | -3.28% | -2.19 | — |
| Aug 5, 2026 | After-hours | $63.73 | -3.28% | -2.19 | — |
| Aug 3, 2026 | Pre-market | $67.33 | +3.09% | 2.06 | — |
About BMY Market Moves
This page tracks unusual market activity for Bristol-Myers Squibb Co. (BMY) 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 BMY'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.