Top movers in Wednesday's after hours session

Last update: Sep 24, 2025

The regular session of the US market on Wednesday is now over, but let's get a preview of the after-hours session and explore the top gainers and losers driving the post-market movements.

Today's after hours gainers

Ticker	Change	Comment
OFAL	73.68%	Positive market activity for OFA GROUP (NASDAQ:OFAL) after regular trading hours, with a 73.68% increase to $2.31 in the after-hours session on Wednesday. Shareholders saw the stock price going 26.11% lower in the past 3 months.
IMRX	47.35%	After the regular session, IMMUNEERING CORP - CLASS A (NASDAQ:IMRX) continues to impress in the after-hours session, with a 47.35% increase to $13.6. A press release (Immuneering Announces Proposed Underwritten Public Offering of Class A Common Stock and Pre-Funded Warrants and Proposed Concurrent Private Placement of Class A Common Stock and Class B Common Stock to Sanofi) was released earlier today.
PEPG	35.71%	PEPGEN INC (NASDAQ:PEPG) rose 35.71% to $3.61 during Wednesday's after hours session. After a notable 36.41% gain earlier today, PEPG maintains its positive momentum during the after-hours session. A press release (PepGen Announces Highest Mean Splicing Correction Reported in DM1 Patients) was released earlier today.
HTOOW	26.82%	Notable gains for FUSION FUEL GREEN PLC -CW26 (NASDAQ:HTOOW) in the after-hours session, with a 26.82% rise to $0.03 during Wednesday. In the last 3 months the share price increased with 86.44%.
HTZ	20.09%	Promising after-hours performance observed for HERTZ GLOBAL HLDGS INC (NASDAQ:HTZ) as its shares surged 20.09% to $8.37 during Wednesday's after-hours trading. Earlier today the company had a press release: Hertz Announces $250 Million Exchangeable Senior Notes Offering.
QLGN	20.05%	In the after-hours session on Wednesday, QUALIGEN THERAPEUTICS INC (NASDAQ:QLGN) experienced a notable 20.05% increase, driving its shares to $4.97. In the last month the share price increased with 124.0%.
PSQH	10.25%	After the closing bell, PSQ HOLDINGS INC (NYSE:PSQH) demonstrated strong momentum in the after-hours session, with a 10.25% rise to $3.12. This is a continuation of today's gain of 17.43%.
SFIX	10.11%	STITCH FIX INC-CLASS A (NASDAQ:SFIX) showcases remarkable after-hours performance, with a 10.11% rise to $6.21 during Wednesday's after-hours trading. STITCH FIX INC-CLASS A released earnings Yesterday. In the last 3 months the stock gained 59.77%.
HTOO	9.14%	FUSION FUEL GREEN PLC-A (NASDAQ:HTOO) rose 9.14% to $5.85 during Wednesday's after hours session. In the last month the share price increased with 41.73%.
OPEN	8.38%	Promising after-hours performance observed for OPENDOOR TECHNOLOGIES INC (NASDAQ:OPEN) as its shares surged 8.38% to $8.92 during Wednesday's after-hours trading. The positive momentum from today's 16.08% gain carries over into the after-hours session, with 8.38% further growth.

To see the full list of after hours gainers you can use our after hours gainers page.

Today's after hours losers

Ticker	Change	Comment
ICU	-41.94%	Price volatility persists as SEASTAR MEDICAL HOLDING CORP (NASDAQ:ICU) closed the regular session with a %ABSPERF% loss, and the downward trend continues in the after-hours session. The stock is trading 37.92% higher than a month ago.
RAYA	-33.61%	ERAYAK POWER SOLUTION GRP-A's (NASDAQ:RAYA) shares experienced a 33.61% decrease to $0.05 in the after-hours session. Despite a strong 15.8% gain earlier today, RAYA is experiencing a reversal in after-hours trading, with prices declining by 33.61%.
CETX	-18.87%	CEMTREX INC's (NASDAQ:CETX) shares fell 18.87% to $0.51. The stock is trading 50.0% lower than a month ago.
RENB	-16.28%	Following a %ABSPERF% loss in the regular session, LUNAI BIOWORKS INC (NASDAQ:RENB) exhibits further decline during today's after-hours session. A press release (Lunai Bioworks, Inc. to Effect 10:1 Reverse Stock Split) was released earlier today.
SHFSW	-14.85%	The after-hours session reflects NORTHERN LIGHTS ACQUIS -CW22 (NASDAQ:SHFSW)'s ongoing correction after experiencing a 94.89% loss in the regular trading hours. Despite a strong 94.89% gain earlier today, SHFSW is experiencing a reversal in after-hours trading, with prices declining by 14.85%.
EZGO	-14.6%	EZGO TECHNOLOGIES LTD's (NASDAQ:EZGO) shares experienced a 14.6% decrease to $0.19 in the after-hours session. After today's gain of 38.21%, it goes down with 14.6% in today's after hours session.
YAAS	-12.34%	YOUXIN TECHNOLOGY LTD-CL A's (NASDAQ:YAAS) stock price is showing a decline of 12.34% to a price of $0.09 during the after-hours session. Price movements remain volatile as YAAS gives back 42.17% of its earlier gains in the after-hours session.
ARBB	-12.32%	ARB IOT GROUP LTD's (NASDAQ:ARBB) stock price is showing a decline of 12.32% to a price of $10.39 during the after-hours session. The stock is trading 195.0% higher than a month ago.
RIG	-11.81%	TRANSOCEAN LTD's (NYSE:RIG) shares declined by 11.81% to $3.21 during Wednesday's after-hours session. Shareholders saw the stock price going 41.09% higher in the past 3 months.
GNPX	-9.52%	After today's %ABSPERF% drop, GENPREX INC (NASDAQ:GNPX) shows further decline during today's after-hours session with a 9.52% decrease. Shareholders saw the stock price going 23.89% higher in the past month.

For the full after hours loser list go to our after hours losers page.