Curious about the stocks that are showing activity after the closing bell on Monday?

Last update: Aug 18, 2025

The US market regular session of Monday is over, let's have a look at the top gainers and losers in the after hours session today.

After hours gainers

Ticker	Change	Comment
LASE	48.78%	After the closing bell, LASER PHOTONICS CORP (NASDAQ:LASE) demonstrated strong momentum in the after-hours session, with a 48.78% rise to $3.66. Earlier today the company had a press release: Laser Photonics Reports Q2 2025 Revenue Growth of 317% Year-Over-Year.
GTI	39.02%	GRAPHJET TECHNOLOGY (NASDAQ:GTI) rose 39.02% to $0.13 during Monday's after hours session. Earlier today the company had a press release: Graphjet to collaborate with Universiti Kebangsaan Malaysia for the development of thermal management material using graphite.
TBBB	36.12%	Notable gains for BBB FOODS INC-CLASS A (NYSE:TBBB) in the after-hours session, with a 36.12% rise to $34.64 during Monday. The stock is trading 22.12% lower than a year ago.
WALD	36.11%	WALDENCAST PLC-A (NASDAQ:WALD) exhibits strong performance after hours, with shares rising 36.11% to $2.45 during Monday's after-hours session. yesterday the company released their earnings. In the last month the share price dropped with 21.4%.
LIDR	20.78%	AEYE INC (NASDAQ:LIDR) rose 20.78% to $3.14 during Monday's after hours session. A press release (AEye and Black Sesame Technologies Sign Strategic Cooperation Agreement to Advance Autonomous Safety in China) was released earlier today.
WGRX	17.35%	Promising after-hours performance observed for WELLGISTICS HEALTH INC (NASDAQ:WGRX) as its shares surged 17.35% to $0.88 during Monday's after-hours trading. The positive market sentiment seen in today's regular session, where WGRX closed with a 20.75% gain, carries over into the after-hours session.
IVVD	8.4%	INVIVYD INC's (NASDAQ:IVVD) shares rose 8.4% to $0.63. Following a -17.82% loss in the regular session, IVVD is displaying signs of recovery during the after-hours session. INVIVYD INC released earnings today. Earlier today the company had a press release: Invivyd Announces Continued Neutralizing Activity of PEMGARDA® (pemivibart) and VYD2311 Against Currently Dominant SARS-CoV-2 Variant XFG (“Stratus”).
XFOR	7.63%	Notable gains for X4 PHARMACEUTICALS INC (NASDAQ:XFOR) in the after-hours session, with a 7.63% rise to $2.68 during Monday. Prices are quite volatile here as XFOR closed with a -12.63% loss today.
WHLR	7.5%	Notable gains for WHEELER REAL ESTATE INVESTME (NASDAQ:WHLR) in the after-hours session, with a 7.5% rise to $2.15 during Monday. In the last month the share price dropped with 56.04%.
IOVA	6.4%	Impressive after-hours gains for IOVANCE BIOTHERAPEUTICS INC (NASDAQ:IOVA) as its stock price advanced 6.4% to $2.66 during Monday's after-hours session. Earlier today the company had a press release: Iovance’s Amtagvi® (lifileucel) Receives Health Canada Approval for Advanced Melanoma.

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

Today's after hours losers

Ticker	Change	Comment
OTRK	-19.67%	ONTRAK INC's (NASDAQ:OTRK) shares fell 19.67% to $0.27. OTRK had a challenging day, closing -11.98% lower during the regular session, and the downward trend continues in the after-hours session.
ALXO	-19.59%	ALX ONCOLOGY HOLDINGS INC's (NASDAQ:ALXO) stock price decreased by 19.59% to $0.78. After registering a 50.55% gain earlier today, ALXO is experiencing a 19.59% decline in today's after-hours session.
IBIO	-17.57%	IBIO INC's (NASDAQ:IBIO) stock price is showing a decline of 17.57% to a price of $0.61 during the after-hours session. In the last 6 months the stock lost 78.66%.
ATNFW	-13.95%	KBL MERGER CORP IV - CW23's (NASDAQ:ATNFW) shares experienced a 13.95% decrease to $0.37 in the after-hours session. In the last month the share price increased with 5.0K%.
VTAK	-10.35%	CATHETER PRECISION INC's (NYSEARCA:VTAK) shares declined by 10.35% to $3.81 during Monday's after-hours session. After a notable 62.84% increase earlier today, VTAK shows signs of a pullback during the after-hours session. Yesterday the company had a press release: Catheter Precision Receives Approval for LockeT in the United Kingdom.
SNGX	-10.28%	After today's 78.42% drop, SOLIGENIX INC (NASDAQ:SNGX) shows further decline during today's after-hours session with a 10.28% decrease. Following a 78.42% increase in the regular trading session, SNGX is showing signs of weakness with a 10.28% decline in after-hours trading.
SRXH	-7.07%	SRX HEALTH SOLUTIONS INC's (NYSEARCA:SRXH) shares fell 7.07% to $0.39 during Monday's after hours session. It appears that the downward trend persists as SRXH also experienced a -16.02% decline during the regular session.
BLNK	-6.31%	Today's after-hours session sees a continuation of the %ABSPERF% decrease earlier in the day for BLINK CHARGING CO (NASDAQ:BLNK). yesterday the company released their earnings. Shareholders saw the stock price going 42.88% higher in the past 3 months.
PMNT	-4.89%	PERFECT MOMENT LTD's (NYSEARCA:PMNT) shares fell 4.89% to $0.53 during Monday's after hours session. In the last month the share price increased with 55.56%.
RVSN	-4.76%	Today's after-hours session sees a continuation of the 11.7% decrease earlier in the day for RAIL VISION LTD (NASDAQ:RVSN). Following a 11.7% increase in the regular trading session, RVSN is showing signs of weakness with a 4.76% decline in after-hours trading.

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