Why is CENX stock up today?

Century Aluminum Co (CENX) is up 0.0% today. Our scanner flagged it 5 times today on unusual volume. A recent SEC filing (CENTURY ALUMINUM CO: Q2 FY2026 results, three months to Jun 30, 2026) may be a factor. Volume is running about 0.6x its recent daily average.

Why is $CENX stock moving today?

Century Aluminum Co · PRIMARY PRODUCTION OF ALUMINUM

Why is $CENX moving today?

The likely driver

CENTURY ALUMINUM CO: Q2 FY2026 results, three months to Jun 30, 2026

SEC filing · Aug 6

The numbers behind the move

Short interest

10.3% of float

Days to cover

5.2d

Float

99.0M · Medium

Float rotation

0.0x

CENX: 10.3% of the float is sold short (5.2 days to cover).

Price

$39.10

Move today

+0.0%

Volume vs avg

0.6x

Scanner alerts today

Flagged in 30 days

219

Market cap

$3.9B

Prev close

$39.10

Avg volume

2.0M

Today’s scanner timeline

3:36 PMUnusual volume (RVOL) alert
10:40 AMUnusual volume (RVOL) alert
10:20 AMBig % mover alert
10:11 AMUnusual volume (RVOL) alert
7:10 AMUnusual volume (RVOL) alert

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

Earlier scanner activity on CENX

Sep 18Unusual volume (RVOL) alert
Sep 18Unusual volume (RVOL) alert
Sep 18Unusual volume (RVOL) alert
Sep 18Unusual volume (RVOL) alert
Sep 17Unusual volume (RVOL) alert
Sep 17Unusual volume (RVOL) alert
Sep 16Unusual volume (RVOL) alert
Sep 16Big % mover alert
Sep 15Big % mover alert
Sep 15Unusual volume (RVOL) alert
Sep 15Unusual volume (RVOL) alert
Sep 15Unusual 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 $CENX page →Live chart Trending stocks

Other stocks moving today

$PAAI -17.3%$EU +17.2%$ARM +17.2%$SCTX -15.0%$EMAT -14.7%$VNCE -14.7%$BRVE -14.3%$SSM -13.6%

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.