Pre-market price movements and significant market activity for Protagonist Therapeutics, Inc ($PTGX). Each move is flagged by Z-score statistical significance — showing when $PTGX moved beyond its typical daily range. 4 significant moves detected in the last 30 days.
Current Market State
What May Be Driving PTGX?
PTGX shares rose 4.30% driven by strong growth screening, featuring 47% EPS growth and zero debt.
Protagonist Therapeutics, Inc operates in the Healthcare sector, specifically Pharmaceutical Preparations. Sector-wide movement can contribute to individual stock volatility.
Recent Unusual Moves (30 days)
| Date | Session | Price | Move | Z-Score | Rel. Vol. |
|---|---|---|---|---|---|
| Sep 25, 2026 | Regular | $141.84 | +3.28% | 2.07 | 0.7× |
| Sep 25, 2026 | After-hours | $141.86 | +3.29% | 2.08 | 1.3× |
| Sep 23, 2026 | Regular | $139.11 | -4.11% | -2.64 | 0.4× |
| Sep 23, 2026 | After-hours | $138.70 | -4.39% | -2.84 | 0.8× |
About PTGX Premarket Movers
This page tracks unusual market activity for Protagonist Therapeutics, Inc (PTGX) 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 PTGX'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.