Why is ALDX stock up today?

Why is $ALDX stock moving today?

Aldeyra Therapeutics, Inc. · Pharmaceutical Preparations

Why is $ALDX moving today?

The likely driver

Reproxalap for the Potential Treatment of Dry Eye Disease: Regulatory Update CONFERENCE CALL September 29, 2026 Nasdaq: ALDX © Aldeyra Therapeutics, Inc. 2026

Aldeyra Therapeutics, Inc.: Reproxalap for the Potential Treatment of Dry Eye Disease: Regulatory Update CONFERENCE CALL September 29, 2026 Nasdaq: ALDX © Aldeyra Therapeutics, Inc. 2026

SEC filing · Sep 29

The numbers behind the move

Short interest

27.2% of float

Days to cover

3.0d

Float

12.8M · Medium

Float rotation

0.1x

Insider buying

4 open-market

ALDX: 27.2% of the float is sold short (3.0 days to cover), 4 open-market insider buys.

Price

$0.93

Move today

+0.0%

Volume vs avg

0.0x

Scanner alerts today

Flagged in 30 days

130

Market cap

$55M

Prev close

$0.93

Avg volume

1.2M

Nothing has triggered on ALDX yet in this session. Our scanner has flagged it 130 times in the last 30 days , most recently on October 9 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

Oct 9Unusual volume (RVOL) alert
Oct 8Unusual volume (RVOL) alert
Oct 8Unusual volume (RVOL) alert
Oct 7Big % mover alert
Oct 7Unusual volume (RVOL) alert
Oct 7Unusual volume (RVOL) alert
Oct 7Unusual volume (RVOL) alert
Oct 7Unusual volume (RVOL) alert
Oct 6Big % mover alert
Oct 6Unusual volume (RVOL) alert
Oct 5Big % mover alert
Oct 5Unusual 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.

Full $ALDX page →Live chart Trending stocks

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Other stocks moving today

$DNA +14.6%$ZSQR +14.3%$MRNA +14.2%$ABSI +13.6%$PICS +13.5%$ALHC -13.4%$TMUS -13.3%$NCPL -13.0%

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.