Get insights into the top gainers and losers of Monday's after-hours session.

Last update: Dec 15, 2025

The regular session of the US market on Monday 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
VERO	20.36%	VENUS CONCEPT INC (NASDAQ:VERO) showcases remarkable after-hours performance, with a 20.36% rise to $2.01 during Monday's after-hours trading. Following a -10.7% loss in the regular session, VERO displays significant price volatility in today's after-hours session.
RILY	20.06%	Promising after-hours performance observed for B. RILEY FINANCIAL INC (NASDAQ:RILY) as its shares surged 20.06% to $4.47 during Monday's after-hours trading. In the last month the share price dropped with 25.75%.
IVP	16.1%	Promising after-hours performance observed for INSPIRE VETERINARY PARTNE-A (NASDAQ:IVP) as its shares surged 16.1% to $0.06 during Monday's after-hours trading. Today's after-hours session reflects the continued strength of IVP, following its 13.55% gain during the regular trading hours.
ORGO	11.8%	ORGANOGENESIS HOLDINGS INC (NASDAQ:ORGO) showcases remarkable after-hours performance, with a 11.8% rise to $5.4 during Monday's after-hours trading. The stock is trading 20.82% lower than a month ago.
REAX	9.27%	Positive market activity for REAL BROKERAGE INC/THE (NASDAQ:REAX) after regular trading hours, with a 9.27% increase to $4.36 in the after-hours session on Monday.
SRXH	8.87%	SRX HEALTH SOLUTIONS INC's (NYSEARCA:SRXH) stock price increased by 8.87% to $0.33. Despite a -33.95% decrease earlier today, there is a notable recovery in today's after-hours session for SRXH.
ARBKL	8.49%	Promising after-hours performance observed for ARGO BLOCKCHAIN PLC - ARB 8 3/4 11/30/26 (NASDAQ:ARBKL) as its shares surged 8.49% to $5.75 during Monday's after-hours trading. This is a continuation of today's 201.0% gain, as ARBKL maintains its upward trajectory in the after-hours session.
MSAI	7.32%	MULTISENSOR AI HOLDINGS INC's (NASDAQ:MSAI) stock price is advancing with 7.32% to a price of $0.44. Only today these shares were declining by -16.77%, so we see a bit of recovery during the after hours session.
QH	6.77%	Notable gains for QUHUO LTD-ADR (NASDAQ:QH) in the after-hours session, with a 6.77% rise to $1.42 during Monday. Only today these shares were declining by -15.82%, so we see a bit of recovery during the after hours session.
BDRX	6.49%	Promising after-hours performance observed for BIODEXA PHARMACEUTICALS-ADR (NASDAQ:BDRX) as its shares surged 6.49% to $5.09 during Monday's after-hours trading. The stock is trading 27.69% lower than 3 months ago.

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

After hours losers

Ticker	Change	Comment
RVPHW	-70.0%	REVIVA PHARMACEUTICALS -CW23's (NASDAQ:RVPHW) stock price decreased by 70.0% to $0.0. Price volatility persists as RVPHW closed the regular session -16.67% lower, and the downward trend carries on during the after-hours session.
IRBT	-10.17%	Following a -72.69% loss in the regular session, IROBOT CORP (NASDAQ:IRBT) exhibits further decline during today's after-hours session. After a challenging regular session that resulted in a -72.69% loss, IRBT shows no signs of improvement in the after-hours session.
RADX	-10.16%	Following a 150.0% loss in the regular session, RADIOPHARM THERANOSTICS LTD (NASDAQ:RADX) exhibits further decline during today's after-hours session. Price volatility intensifies as RADX retraces its 150.0% gain during the after-hours session.
SCWO	-10.07%	374WATER INC's (NASDAQ:SCWO) stock price saw a decrease of 10.07% to $0.18 during Monday's after-hours session. Following a -27.98% loss in the regular session, SCWO experiences further decline during today's after-hours session.
KXIN	-9.91%	KAIXIN HOLDINGS's (NASDAQ:KXIN) stock price decreased by 9.91% to $4.0. Price movements remain volatile as KXIN gives back 33.73% of its earlier gains in the after-hours session.
LWLG	-7.43%	LIGHTWAVE LOGIC INC's (NASDAQ:LWLG) shares experienced a 7.43% decrease to $3.49 in the after-hours session. A press release (Lightwave Logic, Inc. Announces Proposed Public Offering of Common Stock) was released earlier today.
SKYQ	-6.95%	After today's %ABSPERF% drop, SKY QUARRY INC (NASDAQ:SKYQ) shows further decline during today's after-hours session with a 6.95% decrease. Shareholders saw the stock price going 27.08% lower in the past 3 months.
NCI	-6.9%	Following a -24.48% loss in the regular session, NEO-CONCEPT INTL GROUP HLD-A (NASDAQ:NCI) exhibits further decline during today's after-hours session. Today's -24.48% drop extends further in today's after-hours session with an additional decline of 6.9%.
LAZR	-6.67%	LUMINAR TECHNOLOGIES INC's (NASDAQ:LAZR) stock price decreased by 6.67% to $0.33. LAZR had a challenging day, closing -60.82% lower during the regular session, and the downward trend continues in the after-hours session. Earlier today the company had a press release: Luminar Announces Sale of Photonics Business to Quantum Computing Inc. for $110 Million.
PLAG	-6.13%	PLANET GREEN HOLDINGS CORP's (NYSEARCA:PLAG) stock price decreased by 6.13% to $1.99. The stock is trading 132.0% higher than 6 months ago.

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