STX institutional options flow analysis — multi-leg block trades, dominant direction, and gamma analysis from the public options tape for February 18, 2026. Articles older than 60 days are public; sign in to read flow within the past month, upgrade to AIme Premium for today's unusual options trades without the delay.

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STX Unusual Options Activity — 2026-02-18

Institutional flow on 2026-02-18

Multi-leg block trades, dominant direction, and gamma analysis

$55.0M2 trades
Close Short CallClose Long Call

Trade Details

BUY$250 CALL20260220$45.0MClose Long Call
SELL$420 CALL20260320$10.0MClose Short Call

Gamma Analysis

GEX Bias
Bullish
Support
$420
Resistance
$430