Discover — SNDQ +22.59% (5:30 PM ET)

$SNDQ surges +22.59% in after-hours trade, printing $53.20 on $22.4M in dollar-volume.

After the cash close, $SNDQ ripped from a $41.25 prior close to $53.20 — a $11.95 handle move with $22.4M in dollar-volume behind it, which is substantial for an extended-hours session. This is a pure price-and-volume flag with no fundamental catalyst confirmed on our end; the move itself is the signal. Watch for whether this level holds into the 8:00 PM ET close and whether volume continues to build — a fade on declining volume would suggest a thin after-hours print, while sustained accumulation near the highs would warrant closer attention heading into Wednesday's open.