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Friday's after hours session: top gainers and losers

By Mill Chart

Last update: Sep 5, 2025

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


postmarket

Today's after hours gainers

TickerChangeComment
GTBP29.79%Impressive after-hours gains for GT BIOPHARMA INC (NASDAQ:GTBP) as its stock price advanced 29.79% to $1.22 during Friday's after-hours session. Shareholders saw the stock price going 48.36% lower in the past month.
RAPP23.26%RAPPORT THERAPEUTICS INC's (NASDAQ:RAPP) shares rose 23.26% to $17.7 during Friday's after hours session. In the last 6 months the stock gained 67.17%.
CLRO22.0%Positive after-hours movement for CLEARONE INC (NASDAQ:CLRO) as its shares recorded a 22.0% increase, reaching $5.99 during Friday's after-hours session. This is a continuation of today's gain of 18.31%.
OPTX20.67%Promising after-hours performance observed for SYNTEC OPTICS HOLDINGS INC (NASDAQ:OPTX) as its shares surged 20.67% to $1.81 during Friday's after-hours trading. Earlier today the company had a press release: Syntec Optics (Nasdaq: OPTX) Launches Pioneering New York State Apprenticeship Program to Foster U.S. Advanced Manufacturing.
HOUR15.62%In the after-hours session on Friday, HOUR LOOP INC (NASDAQ:HOUR) experienced a notable 15.62% increase, driving its shares to $4.22. This is a continuation of today's 93.12% gain, as HOUR maintains its upward trajectory in the after-hours session.
CIGL13.21%CONCORDE INTERNATION-CLASS A (NASDAQ:CIGL) showcases remarkable after-hours performance, with a 13.21% rise to $4.8 during Friday's after-hours trading. After a notable 45.7% gain earlier today, CIGL maintains its positive momentum during the after-hours session.
ACRV12.77%Impressive after-hours gains for ACRIVON THERAPEUTICS INC (NASDAQ:ACRV) as its stock price advanced 12.77% to $1.5 during Friday's after-hours session. In the last 6 months the share price dropped with 75.99%.
SKYQ11.08%Notable gains for SKY QUARRY INC (NASDAQ:SKYQ) in the after-hours session, with a 11.08% rise to $0.46 during Friday. Shareholders saw the stock price going 50.25% lower in the past 3 months.
TNFA10.3%TNF PHARMACEUTICALS INC (NASDAQ:TNFA) showcases remarkable after-hours performance, with a 10.3% rise to $3.64 during Friday's after-hours trading. In the last month the stock lost 66.46%.
GRYP9.41%Notable gains for GRYPHON DIGITAL MINING INC (NASDAQ:GRYP) in the after-hours session, with a 9.41% rise to $1.51 during Friday. Following a -10.39% loss in the regular session, GRYP displays significant price volatility in today's after-hours session.

For the full after hours gainers list go to our after hours gainers page.

After hours losers

TickerChangeComment
GNPX-14.38%Price volatility persists as GENPREX INC (NASDAQ:GNPX) closed the regular session with a 47.4% loss, and the downward trend continues in the after-hours session. Price volatility intensifies as GNPX retraces its 47.4% gain during the after-hours session.
PFAI-8.85%PINNACLE FOOD GROUP LTD-A's (NASDAQ:PFAI) shares fell 8.85% to $2.37 during Friday's after hours session. After running up 44.44% in today's session, PFAI is pulling back after hours.
CREG-8.16%Today's after-hours session sees a continuation of the 10.54% decrease earlier in the day for SMART POWERR CORP (NASDAQ:CREG). Following today's 10.54% gain, CREG experiences a 8.16% decline in today's after-hours session.
VEEE-8.1%Following a 46.39% loss in the regular session, TWIN VEE POWERCATS CO (NASDAQ:VEEE) exhibits further decline during today's after-hours session. Despite a strong 46.39% gain earlier today, VEEE is experiencing a reversal in after-hours trading, with prices declining by 8.1%.
WAI-6.9%TOP KINGWIN LTD-A's (NASDAQ:WAI) shares fell 6.9% to $0.11 during Friday's after hours session. A press release (Top KingWin Ltd Announces 1-For-25 Reverse Share Split) was released two days ago.
CARM-6.74%CARISMA THERAPEUTICS INC's (NASDAQ:CARM) shares declined by 6.74% to $0.37 during Friday's after-hours session. Prices are quite volatile now: this is a reversal from 25.59% gain.
KXIN-6.34%Following a 13.57% loss in the regular session, KAIXIN HOLDINGS (NASDAQ:KXIN) exhibits further decline during today's after-hours session. Prices are quite volatile now: this is a reversal from 13.57% gain.
HKPD-5.79%Price volatility persists as HONG KONG PHARMA DIGITAL TEC (NASDAQ:HKPD) closed the regular session with a 16.35% loss, and the downward trend continues in the after-hours session. After a notable 16.35% increase earlier today, HKPD shows signs of a pullback during the after-hours session.
MSPR-5.49%MSP RECOVERY INC's (NASDAQ:MSPR) stock price is showing a decline of 5.49% to a price of $2.41 during the after-hours session. After running up 13.84% in today's session, MSPR is pulling back after hours.

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

CLEARONE INC

NASDAQ:CLRO (9/26/2025, 8:00:00 PM)

5.06

-0.08 (-1.56%)


SMART POWERR CORP

NASDAQ:CREG (9/26/2025, 8:00:00 PM)

After market: 1.94 -0.05 (-2.51%)

1.99

-0.1 (-4.78%)


GENPREX INC

NASDAQ:GNPX (9/26/2025, 8:00:00 PM)

After market: 0.1829 +0 (+2.29%)

0.1788

-0.01 (-3.51%)


KAIXIN HOLDINGS

NASDAQ:KXIN (9/26/2025, 8:06:18 PM)

After market: 0.74 +0.03 (+4.23%)

0.71

+0.02 (+2.9%)


GT BIOPHARMA INC

NASDAQ:GTBP (9/26/2025, 8:00:02 PM)

After market: 0.776 +0.01 (+1.04%)

0.768

+0.01 (+0.92%)


TWIN VEE POWERCATS CO

NASDAQ:VEEE (9/26/2025, 8:00:02 PM)

After market: 2.72 -0.04 (-1.45%)

2.76

0 (0%)


HOUR LOOP INC

NASDAQ:HOUR (9/26/2025, 8:00:02 PM)

After market: 3.1 +0.04 (+1.31%)

3.06

+0.4 (+15.04%)


MSP RECOVERY INC

NASDAQ:MSPR (9/26/2025, 8:13:55 PM)

After market: 1.38 -0.01 (-0.72%)

1.39

+0.01 (+0.72%)


ACRIVON THERAPEUTICS INC

NASDAQ:ACRV (9/26/2025, 8:00:00 PM)

After market: 1.64 -0.02 (-1.2%)

1.66

+0.12 (+7.79%)


CARISMA THERAPEUTICS INC

NASDAQ:CARM (9/26/2025, 8:00:02 PM)

After market: 0.2895 0 (-0.1%)

0.2898

+0.02 (+7.73%)


SYNTEC OPTICS HOLDINGS INC

NASDAQ:OPTX (9/26/2025, 8:20:59 PM)

After market: 1.55 0 (0%)

1.55

+0.01 (+0.65%)


GRYPHON DIGITAL MINING INC

NASDAQ:GRYP (9/2/2025, 8:07:40 PM)

After market: 1.5099 +0.13 (+9.41%)

1.38

-0.16 (-10.39%)


RAPPORT THERAPEUTICS INC

NASDAQ:RAPP (9/26/2025, 8:25:47 PM)

After market: 26 -0.59 (-2.22%)

26.59

+1.62 (+6.49%)


TNF PHARMACEUTICALS INC

NASDAQ:TNFA (9/24/2025, 8:00:01 PM)

After market: 4.4801 -0.72 (-13.84%)

5.2

+1.69 (+48.15%)


SKY QUARRY INC

NASDAQ:SKYQ (9/26/2025, 8:00:02 PM)

After market: 0.4301 -0.02 (-5.39%)

0.4546

+0.04 (+8.5%)


TOP KINGWIN LTD-A

NASDAQ:WAI (9/26/2025, 8:00:02 PM)

After market: 4.63 -0.04 (-0.86%)

4.67

+1.51 (+47.78%)


HONG KONG PHARMA DIGITAL TEC

NASDAQ:HKPD (9/26/2025, 8:00:02 PM)

After market: 1.52 0 (0%)

1.52

-0.22 (-12.64%)


PINNACLE FOOD GROUP LTD-A

NASDAQ:PFAI (9/26/2025, 8:22:29 PM)

1.9781

-0.01 (-0.57%)


CONCORDE INTERNATION-CLASS A

NASDAQ:CIGL (9/26/2025, 8:00:00 PM)

After market: 2.45 0 (0%)

2.45

+0.08 (+3.38%)



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