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Monday's after hours session: top gainers and losers

By Mill Chart

Last update: Sep 15, 2025

Wondering what's happening in today's after-hours session? Stay tuned for the latest updates on stock movements.


postmarket

Gainers

TickerChangeComment
WBTN71.66%After the regular session, WEBTOON ENTERTAINMENT INC (NASDAQ:WBTN) continues to impress in the after-hours session, with a 71.66% increase to $25.68. A press release (Disney and WEBTOON Entertainment Broaden Relationship to Create New Digital Comics Platform) was released earlier today.
CHEK28.3%Positive after-hours movement for CHECK CAP LTD (NASDAQ:CHEK) as its shares recorded a 28.3% increase, reaching $2.72 during Monday's after-hours session. Also in the regular session CHEK had a very good day: shares closed with a 184.0% gain.
BSLKW26.61%GOLDEN ARROW MERGER A -CW26 (NASDAQ:BSLKW) showcases remarkable after-hours performance, with a 26.61% rise to $0.05 during Monday's after-hours trading. In the last month the share price dropped with 38.0%.
ORN26.26%Positive market activity for ORION GROUP HOLDINGS INC (NYSE:ORN) after regular trading hours, with a 26.26% increase to $9.52 in the after-hours session on Monday. A press release (Orion Group Holdings Announces Over $120 Million in Contract Wins) was released earlier today.
BSLK26.01%BOLT PROJECTS HOLDINGS INC (NASDAQ:BSLK) exhibits strong performance after hours, with shares rising 26.01% to $4.7 during Monday's after-hours session. In the last month the stock lost 57.57%.
RVLV25.94%REVOLVE GROUP INC's (NYSE:RVLV) stock price increased by 25.94% to $30.0.
ZONE19.41%CLEANCORE SOLUTIONS INC-CL B's (NYSEARCA:ZONE) stock price increased by 19.41% to $3.2. After experiencing a -29.47% decline earlier today, ZONE shows signs of a rebound in today's after-hours session.
HITI10.87%Impressive after-hours gains for HIGH TIDE INC (NASDAQ:HITI) as its stock price advanced 10.87% to $4.08 during Monday's after-hours session. HIGH TIDE INC released earnings Yesterday. The stock is trading 38.35% higher than a month ago.
NUKK9.9%NUKKLEUS INC's (NASDAQ:NUKK) stock price increased by 9.9% to $5.66. After a notable 13.94% gain earlier today, NUKK maintains its positive momentum during the after-hours session.
MIRA9.42%After the closing bell, MIRA PHARMACEUTICALS INC (NASDAQ:MIRA) demonstrated strong momentum in the after-hours session, with a 9.42% rise to $1.51. In the last year the share price increased with 23.21%.

Our after hours gainers page will show you the full list.

After hours losers

TickerChangeComment
ASO-33.17%ACADEMY SPORTS & OUTDOORS IN's (NASDAQ:ASO) shares declined by 33.17% to $31.05 during Monday's after-hours session. The stock is trading 23.0% lower than a year ago.
MTVA-16.0%After today's 116.0% drop, METAVIA INC (NASDAQ:MTVA) shows further decline during today's after-hours session with a 16.0% decrease. Despite a strong 116.0% gain earlier today, MTVA is experiencing a reversal in after-hours trading, with prices declining by 16.0%.
ATCH-13.59%Price volatility persists as ATLASCLEAR HOLDINGS INC (NYSEARCA:ATCH) closed the regular session with a 154.0% loss, and the downward trend continues in the after-hours session. Despite a strong 154.0% gain earlier today, ATCH is experiencing a reversal in after-hours trading, with prices declining by 13.59%.
PLAY-13.39%DAVE & BUSTER'S ENTERTAINMEN's (NASDAQ:PLAY) stock price decreased by 13.39% to $20.95. In the last 3 months the stock lost 26.18%.
NUWE-11.67%Following a 12.44% loss in the regular session, NUWELLIS INC (NASDAQ:NUWE) exhibits further decline during today's after-hours session. Today's after-hours session indicates a reversal in NUWE's earlier 12.44% gain, with prices exhibiting heightened volatility.
OPTT-10.19%OCEAN POWER TECHNOLOGIES INC's (NYSEARCA:OPTT) shares fell 10.19% to $0.49 during Monday's after hours session. OCEAN POWER TECHNOLOGIES INC released earnings Yesterday. In the last year the stock gained 204.0%.
MSN-8.79%Price volatility persists as EMERSON RADIO CORP (NYSEARCA:MSN) closed the regular session with a 13.89% loss, and the downward trend continues in the after-hours session. The positive momentum earlier in the day is waning as MSN retraces 13.89% during the after-hours session.
BIAF-8.57%BIOAFFINITY TECHNOLOGIES INC's (NASDAQ:BIAF) shares fell 8.57% to $0.32 during Monday's after hours session. After registering a 29.63% gain earlier today, BIAF is experiencing a 8.57% decline in today's after-hours session.
CIIT-7.87%Price volatility persists as TIANCI INTERNATIONAL INC (NASDAQ:CIIT) closed the regular session with a %ABSPERF% loss, and the downward trend continues in the after-hours session. In the last 3 months the share price dropped with 60.09%.
EVTV-7.66%Today's after-hours session sees a continuation of the -32.84% decrease earlier in the day for ENVIROTECH VEHICLES INC (NASDAQ:EVTV). It looks like the bad days are not over yet: EVTV also declined by -32.84% during the regular session.

Our after hours losers page will show you the full list.

EMERSON RADIO CORP

NYSEARCA:MSN (12/5/2025, 8:04:00 PM)

After market: 0.4151 -0.02 (-4.24%)

0.4335

+0 (+1.03%)


OCEAN POWER TECHNOLOGIES INC

NYSEARCA:OPTT (12/5/2025, 8:04:00 PM)

After market: 0.42 +0 (+1.11%)

0.4154

-0.02 (-5.59%)


ORION GROUP HOLDINGS INC

NYSE:ORN (12/5/2025, 8:04:00 PM)

After market: 10.27 0 (0%)

10.27

-0.11 (-1.06%)


DAVE & BUSTER'S ENTERTAINMEN

NASDAQ:PLAY (12/5/2025, 8:00:00 PM)

After market: 17.58 +0.26 (+1.5%)

17.32

-0.86 (-4.73%)


CHECK CAP LTD

NASDAQ:CHEK (11/26/2025, 8:21:41 PM)

After market: 1.58 -0.03 (-1.86%)

1.61

+0.03 (+1.9%)


REVOLVE GROUP INC

NYSE:RVLV (12/5/2025, 8:04:00 PM)

After market: 25.97 0 (0%)

25.97

+0.01 (+0.04%)


ACADEMY SPORTS & OUTDOORS IN

NASDAQ:ASO (12/5/2025, 8:03:40 PM)

After market: 50.1 -0.13 (-0.26%)

50.23

+0.94 (+1.91%)


NUWELLIS INC

NASDAQ:NUWE (12/5/2025, 8:00:01 PM)

After market: 2.51 +0.08 (+3.29%)

2.43

-0.2 (-7.6%)


HIGH TIDE INC

NASDAQ:HITI (12/5/2025, 8:26:08 PM)

After market: 2.52 +0.01 (+0.4%)

2.51

-0.1 (-3.83%)


BIOAFFINITY TECHNOLOGIES INC

NASDAQ:BIAF (12/5/2025, 8:04:50 PM)

After market: 1.63 0 (0%)

1.63

-0.09 (-5.23%)


ENVIROTECH VEHICLES INC

NASDAQ:EVTV (12/5/2025, 8:16:49 PM)

1.19

+0.01 (+0.59%)


MIRA PHARMACEUTICALS INC

NASDAQ:MIRA (12/5/2025, 8:00:00 PM)

After market: 1.4143 -0.05 (-3.13%)

1.46

-0.02 (-1.35%)


NUKKLEUS INC

NASDAQ:NUKK (12/5/2025, 8:00:01 PM)

After market: 6.584 +0.12 (+1.92%)

6.46

-0.81 (-11.14%)


ATLASCLEAR HOLDINGS INC

NYSEARCA:ATCH (12/5/2025, 8:04:00 PM)

After market: 0.341 0 (-1.33%)

0.3456

0 (-0.43%)


CLEANCORE SOLUTIONS INC-CL B

NYSEARCA:ZONE (12/5/2025, 8:04:00 PM)

After market: 0.3078 +0.01 (+3.32%)

0.2979

-0.02 (-5.46%)


WEBTOON ENTERTAINMENT INC

NASDAQ:WBTN (12/5/2025, 8:00:02 PM)

After market: 13.0799 -0.83 (-5.97%)

13.91

-0.43 (-3%)


BOLT PROJECTS HOLDINGS INC

NASDAQ:BSLK (12/5/2025, 8:05:59 PM)

After market: 2.09 -0.04 (-1.88%)

2.13

-0.11 (-4.91%)


GOLDEN ARROW MERGER A -CW26

NASDAQ:BSLKW (12/5/2025, 8:05:59 PM)

0.0247

0 (0%)


METAVIA INC

NASDAQ:MTVA (12/5/2025, 8:00:01 PM)

After market: 14.98 +6.8 (+83.09%)

8.1819

+0.87 (+11.85%)


TIANCI INTERNATIONAL INC

NASDAQ:CIIT (12/5/2025, 8:09:36 PM)

0.451

-0.04 (-7.96%)



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