Pre-market price movements and significant market activity for State Street Corporation ($STT). Each move is flagged by Z-score statistical significance — showing when $STT moved beyond its typical daily range. 3 significant moves detected in the last 30 days.
Current Market State
What May Be Driving STT?
STT dropped 4.60% ahead of Wednesday earnings, trading at an extreme 5.54 standard deviations below its 20-day mean.
State Street Corporation operates in the Financial Services sector, specifically State Commercial Banks. Sector-wide movement can contribute to individual stock volatility.
Recent Unusual Moves (30 days)
| Date | Session | Price | Move | Z-Score | Rel. Vol. |
|---|---|---|---|---|---|
| Oct 14, 2026 | Pre-market | $157.01 | -9.82% | -12.56 | 3.4× |
| Oct 14, 2026 | Regular | $163.61 | -6.03% | -7.43 | 2.8× |
| Oct 2, 2026 | After-hours | $169.23 | -3.09% | -2.52 | 0.8× |
About STT Premarket Movers
This page tracks unusual market activity for State Street Corporation (STT) 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 STT'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.