Friday's after hours session: top gainers and losers

Last update: Sep 5, 2025

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

Today's after hours gainers

Ticker	Change	Comment
GTBP	29.79%	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.
RAPP	23.26%	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%.
CLRO	22.0%	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%.
OPTX	20.67%	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.
HOUR	15.62%	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.
CIGL	13.21%	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.
ACRV	12.77%	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%.
SKYQ	11.08%	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.
TNFA	10.3%	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%.
GRYP	9.41%	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

Ticker	Change	Comment
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.