Friday's after hours session: top gainers and losers

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

TICKER
CHANGE
COMMENT

GTBP [https://www.chartmill.com/stock/quote/GTBP/profile]
29.79%
Impressive after-hours gains for GT BIOPHARMA INC (NASDAQ:GTBP [https://www.chartmill.com/stock/quote/GTBP/profile]) 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 [https://www.chartmill.com/stock/quote/RAPP/profile]
23.26%
RAPPORT THERAPEUTICS INC's (NASDAQ:RAPP [https://www.chartmill.com/stock/quote/RAPP/profile]) shares rose 23.26% to $17.7 during Friday's after hours session. In the last 6 months the stock gained 67.17%.

CLRO [https://www.chartmill.com/stock/quote/CLRO/profile]
22.0%
Positive after-hours movement for CLEARONE INC (NASDAQ:CLRO [https://www.chartmill.com/stock/quote/CLRO/profile]) 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 [https://www.chartmill.com/stock/quote/OPTX/profile]
20.67%
Promising after-hours performance observed for SYNTEC OPTICS HOLDINGS INC (NASDAQ:OPTX [https://www.chartmill.com/stock/quote/OPTX/profile]) 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 [https://www.chartmill.com/news/OPTX/gnwcq-2025-9-5-syntec-optics-nasdaq-optx-launches-pioneering-new-york-state-apprenticeship-program-to-foster-us-advanced-manufacturing].

HOUR [https://www.chartmill.com/stock/quote/HOUR/profile]
15.62%
In the after-hours session on Friday, HOUR LOOP INC (NASDAQ:HOUR [https://www.chartmill.com/stock/quote/HOUR/profile]) 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 [https://www.chartmill.com/stock/quote/CIGL/profile]
13.21%
CONCORDE INTERNATION-CLASS A (NASDAQ:CIGL [https://www.chartmill.com/stock/quote/CIGL/profile]) 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 [https://www.chartmill.com/stock/quote/ACRV/profile]
12.77%
Impressive after-hours gains for ACRIVON THERAPEUTICS INC (NASDAQ:ACRV [https://www.chartmill.com/stock/quote/ACRV/profile]) 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 [https://www.chartmill.com/stock/quote/SKYQ/profile]
11.08%
Notable gains for SKY QUARRY INC (NASDAQ:SKYQ [https://www.chartmill.com/stock/quote/SKYQ/profile]) 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 [https://www.chartmill.com/stock/quote/TNFA/profile]
10.3%
TNF PHARMACEUTICALS INC (NASDAQ:TNFA [https://www.chartmill.com/stock/quote/TNFA/profile]) 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 [https://www.chartmill.com/stock/quote/GRYP/profile]
9.41%
Notable gains for GRYPHON DIGITAL MINING INC (NASDAQ:GRYP [https://www.chartmill.com/stock/quote/GRYP/profile]) 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 [https://www.chartmill.com/stock/market/after-market-movers/usa-nyse-nasdaq-amex] page.

AFTER HOURS LOSERS

TICKER
CHANGE
COMMENT

GNPX [https://www.chartmill.com/stock/quote/GNPX/profile]
-14.38%
Price volatility persists as GENPREX INC (NASDAQ:GNPX [https://www.chartmill.com/stock/quote/GNPX/profile]) 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 [https://www.chartmill.com/stock/quote/PFAI/profile]
-8.85%
PINNACLE FOOD GROUP LTD-A'S (NASDAQ:PFAI [https://www.chartmill.com/stock/quote/PFAI/profile]) 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 [https://www.chartmill.com/stock/quote/CREG/profile]
-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 [https://www.chartmill.com/stock/quote/CREG/profile]). Following today's 10.54% gain, CREG experiences a 8.16% decline in today's after-hours session.

VEEE [https://www.chartmill.com/stock/quote/VEEE/profile]
-8.1%
Following a 46.39% loss in the regular session, TWIN VEE POWERCATS CO (NASDAQ:VEEE [https://www.chartmill.com/stock/quote/VEEE/profile]) 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 [https://www.chartmill.com/stock/quote/WAI/profile]
-6.9%
TOP KINGWIN LTD-A'S (NASDAQ:WAI [https://www.chartmill.com/stock/quote/WAI/profile]) 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 [https://www.chartmill.com/news/WAI/gnwcq-2025-9-4-top-kingwin-ltd-announces-1-for-25-reverse-share-split]) was released two days ago.

CARM [https://www.chartmill.com/stock/quote/CARM/profile]
-6.74%
CARISMA THERAPEUTICS INC'S (NASDAQ:CARM [https://www.chartmill.com/stock/quote/CARM/profile]) 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 [https://www.chartmill.com/stock/quote/KXIN/profile]
-6.34%
Following a 13.57% loss in the regular session, KAIXIN HOLDINGS (NASDAQ:KXIN [https://www.chartmill.com/stock/quote/KXIN/profile]) exhibits further decline during today's after-hours session. Prices are quite volatile now: this is a reversal from 13.57% gain.

HKPD [https://www.chartmill.com/stock/quote/HKPD/profile]
-5.79%
Price volatility persists as HONG KONG PHARMA DIGITAL TEC (NASDAQ:HKPD [https://www.chartmill.com/stock/quote/HKPD/profile]) 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 [https://www.chartmill.com/stock/quote/MSPR/profile]
-5.49%
MSP RECOVERY INC'S (NASDAQ:MSPR [https://www.chartmill.com/stock/quote/MSPR/profile]) 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 [https://www.chartmill.com/stock/market/after-market-movers/usa-nyse-nasdaq-amex] page will show you the full list.