SNPS +4.9%: an unusually large move for this stock

Prove it

Every claim on the graphic, labelled: observed (straight from the data), calculated (worked out from it), or possible contributor (lines up in time, not a confirmed cause).

• OBSERVED
  SNPS +4.9% todaySep 30, 2026, 4:35 PM ET
• OBSERVED
  Its sector fund (XLK) +1.0% todaySep 30, 2026, 4:35 PM ET
• CALCULATED
  4.0 points more than its sectorHow: stock return − sector fund return · Sep 30, 2026, 4:35 PM ET
• OBSERVED
  S&P 500 (SPY) +0.1% todaySep 30, 2026, 4:35 PM ET
• CALCULATED
  Volume 1.9× its 20-day averageHow: today’s volume ÷ average of the last 20 days · Sep 30, 2026, 4:35 PM ET
• CALCULATED
  Bigger than 94% of its daily moves over the past 250 trading daysHow: share of past daily moves smaller in size · Sep 30, 2026, 4:35 PM ET
• POSSIBLE CONTRIBUTOR
  News: “Top S&P500 movers in Wednesday's session”Published around the move. Timing only, not a confirmed cause. · Sep 30, 2026, 3:05 PM ET
• POSSIBLE CONTRIBUTOR
  News: “Synopsys Signs $1 Billion-Plus Silicon IP, AI Software Deal With Amazon”Published around the move. Timing only, not a confirmed cause. · Sep 30, 2026, 1:08 PM ET