Pre-market price movements and significant market activity for Vertex Pharmaceuticals Inc ($VRTX). Each move is flagged by Z-score statistical significance — showing when $VRTX moved beyond its typical daily range. 2 significant moves detected in the last 30 days.
Current Market State
What May Be Driving VRTX?
VRTX dropped 3.18% on light volume despite bearish commentary highlighting over-reliance on its cystic fibrosis franchise.
Vertex Pharmaceuticals Inc operates in the Healthcare sector, specifically Biotechnology. Sector-wide movement can contribute to individual stock volatility.
Recent Unusual Moves (30 days)
| Date | Session | Price | Move | Z-Score | Rel. Vol. |
|---|---|---|---|---|---|
| Oct 1, 2026 | Regular | $506.49 | -3.12% | -2.52 | 0.5× |
| Sep 22, 2026 | Pre-market | $523.07 | +2.42% | 2.31 | 0.1× |
About VRTX Premarket Movers
This page tracks unusual market activity for Vertex Pharmaceuticals Inc (VRTX) 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 VRTX'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.