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Why is $ALDX stock up today?

Aldeyra Therapeutics, Inc.

Why is $ALDX up today?

The likely driver

Aldeyra Therapeutics, Inc.: Q2 FY2026 results, three months to Jun 30, 2026
Aldeyra Therapeutics, Inc.: Q2 FY2026 results, three months to Jun 30, 2026
SEC filing · Aug 6

The numbers behind the move

Short interest
24.6% of float
Days to cover
4.8d
Float
12.7M · Medium
Float rotation
0.1x
Insider buying
4 open-market

ALDX: 24.6% of the float is sold short (4.8 days to cover), 4 open-market insider buys.

Price
$1.35
Move today
+0.7%
Volume vs avg
0.0x
Scanner alerts today
0
Flagged in 30 days
34
Market cap
$88M
Prev close
$1.34
Avg volume
1.3M

Nothing has triggered on ALDX yet in this session. Our scanner has flagged it 34 times in the last 30 days , most recently on September 10 for big percentage moves, unusual volume, which is why this page is here. See the full ALDX page for the chart and the alert history.

Earlier scanner activity on ALDX

  • Sep 10Unusual volume (RVOL) alert
  • Sep 9Unusual volume (RVOL) alert
  • Sep 9Unusual volume (RVOL) alert
  • Sep 1Unusual volume (RVOL) alert
  • Sep 1Big % mover alert
  • Sep 1Unusual volume (RVOL) alert
  • Sep 1Unusual volume (RVOL) alert
  • Sep 1Unusual volume (RVOL) alert
  • Aug 31Unusual volume (RVOL) alert
  • Aug 31Unusual volume (RVOL) alert
  • Aug 31Unusual volume (RVOL) alert
  • Aug 28Unusual volume (RVOL) alert

Prior sessions in the last 30 days. A name our scanner keeps flagging is behaving differently from the rest of the market, even on a quiet day.

Other stocks moving today

Each opens that stock’s own why-is-it-moving page.

Move and volume are based on the latest market data and refresh live on this page. Scanner alerts are our own real-time unusual-volume signals. This is research, not investment advice.