Why is $RPID stock down today?

Rapid Micro Biosystems, Inc. Class A Common Stock · Laboratory Analytical Instruments

Why is $RPID down today?

The likely driver

RAPID MICRO BIOSYSTEMS, INC.: Q2 FY2026 results, three months to Jun 30, 2026

SEC filing · Aug 7

The numbers behind the move

Short interest

3.6% of float

Days to cover

4.5d

Float

24.4M · Medium

Float rotation

0.0x

Dilution

Heavy

RPID: active share dilution on file.

Price

$1.10

Move today

-1.8%

Volume vs avg

0.0x

Scanner alerts today

Flagged in 30 days

Market cap

$55M

Prev close

$1.12

Avg volume

245K

Nothing has triggered on RPID yet in this session. Our scanner has flagged it 5 times in the last 30 days , most recently on September 18 for big percentage moves, unusual volume, which is why this page is here. See the full RPID page for the chart and the alert history.

Earlier scanner activity on RPID

Sep 18Big % mover alert
Sep 18Unusual volume (RVOL) alert
Sep 9Big % mover alert
Sep 9Unusual volume (RVOL) alert
Sep 1Unusual 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 $RPID page →Live chart Trending stocks

Other stocks moving today

$TURB -14.9%$KDK -14.4%$WNTR -13.0%$GENI -13.0%$FTFT -12.1%$HELP -11.8%$FJET -11.4%$ISOU -11.1%

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.