🔔
$SNDK and
$MU both went out on the highs — and the tape got loud into the bell.
$SNDK: +10.99% to $1,791.82, closing 97% of the day's range. Flat near +7.9% from 2 PM to 3:30, then +2.96% in the final 30 minutes.
$MU: +3.92% to $1,015.80, closing 98% of the range, +0.84% in the last 30.
The tell was volume, not price:
$SNDK's closing five minutes ran 13.7× its median minute of the session,
$MU's 6.8×.
Day volume finished 1.6× and 1.4× the 20-day average — busy, but the crowding was all at the bell.
Today was September triple witching, when expiring options and index rebalances settle into the close.
Does a close like that follow through Monday, or fade? 👇
Data: intraday · Sep 18, 2026 4:00 PM ET
#TechnicalAnalysis #TradingEducation