Why is $TMDX stock up today?

TransMedics Group, Inc. Common Stock · ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS

Why is $TMDX up today?

The likely driver

TransMedics Appoints Fernando Araujo as Chief Financial Officer and Reiterates 2026 Financial Outlook

SEC filing · Sep 10

The numbers behind the move

Short interest

23.3% of float

Days to cover

12.8d

Float

34.7M · Medium

Float rotation

0.0x

Insider buying

1 open-market

TMDX: 23.3% of the float is sold short (12.8 days to cover), 1 open-market insider buy.

Price

$89.15

Move today

+2.8%

Volume vs avg

0.0x

Scanner alerts today

Flagged in 30 days

132

Market cap

$3.0B

Prev close

$86.74

Avg volume

917K

Today’s scanner timeline

11:48 AMUnusual volume (RVOL) alert
10:51 AMBig % mover alert
10:32 AMUnusual volume (RVOL) alert
10:26 AMBig % mover alert
10:24 AMUnusual volume (RVOL) alert

Unusual-volume alerts often fire before the news is widely reported. This is when our scanner first flagged TMDX today.

Earlier scanner activity on TMDX

Sep 17Unusual volume (RVOL) alert
Sep 17Unusual volume (RVOL) alert
Sep 17Unusual volume (RVOL) alert
Sep 17Unusual volume (RVOL) alert
Sep 17Unusual volume (RVOL) alert
Sep 17Unusual volume (RVOL) alert
Sep 16Unusual volume (RVOL) alert
Sep 15Unusual volume (RVOL) alert
Sep 15Unusual volume (RVOL) alert
Sep 15Unusual volume (RVOL) alert
Sep 15Unusual volume (RVOL) alert
Sep 15Big % mover 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 $TMDX page →Live chart Trending stocks

Other stocks moving today

$FEAM +21.4%$DFDV +21.2%$HSDT +20.5%$CD +20.3%$QMLS +20.3%$MSTW +19.5%$MEDS -19.0%$KAZR +18.6%

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.