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

As the regular session of the US market concludes on Monday, let's get an insight into the after-hours session and identify the stocks leading the pack in terms of gains and losses.

[postmarket]

AFTER HOURS GAINERS

TICKER
CHANGE
COMMENT

STAI [https://www.chartmill.com/stock/quote/STAI/profile]
61.19%
In the after-hours session on Monday, SCANTECH AI SYSTEMS INC (NASDAQ:STAI [https://www.chartmill.com/stock/quote/STAI/profile]) experienced a notable 61.19% increase, driving its shares to $1.08. Earlier today the company had a press release: ScanTech AI Secures Letter of Intent from Visiontec Systems for Multiple SENTINEL™ Systems [https://www.chartmill.com/news/STAI/gnwcq-2025-7-28-scantech-ai-secures-letter-of-intent-from-visiontec-systems-for-multiple-sentinel-systems].

CASK [https://www.chartmill.com/stock/quote/CASK/profile]
31.37%
After the regular session, HERITAGE DISTILLING HOLDING (NASDAQ:CASK [https://www.chartmill.com/stock/quote/CASK/profile]) continues to impress in the after-hours session, with a 31.37% increase to $0.64. Building upon today's 10.2% gain, CASK demonstrates resilience and ongoing growth in the after-hours session.

NVNI [https://www.chartmill.com/stock/quote/NVNI/profile]
20.9%
In the after-hours session on Monday, NVNI GROUP LTD (NASDAQ:NVNI [https://www.chartmill.com/stock/quote/NVNI/profile]) experienced a notable 20.9% increase, driving its shares to $0.83. This is a continuation of today's 63.72% gain, as NVNI maintains its upward trajectory in the after-hours session.

ADAP [https://www.chartmill.com/stock/quote/ADAP/profile]
20.0%
ADAPTIMMUNE THERAPEUTICS-ADR (NASDAQ:ADAP [https://www.chartmill.com/stock/quote/ADAP/profile]) exhibits strong performance after hours, with shares rising 20.0% to $0.12 during Monday's after-hours session. After today's -71.17% drop, there is a noticeable rebound in ADAP during today's after-hours session.

LRHC [https://www.chartmill.com/stock/quote/LRHC/profile]
19.28%
Promising after-hours performance observed for LA ROSA HOLDINGS CORP (NASDAQ:LRHC [https://www.chartmill.com/stock/quote/LRHC/profile]) as its shares surged 19.28% to $8.97 during Monday's after-hours trading. In the last month the share price dropped with 31.93%.

ADIL [https://www.chartmill.com/stock/quote/ADIL/profile]
12.35%
In the after-hours session on Monday, ADIAL PHARMACEUTICALS INC (NASDAQ:ADIL [https://www.chartmill.com/stock/quote/ADIL/profile]) experienced a notable 12.35% increase, driving its shares to $0.71. Continuing the upward trend from today's 22.57% gain, ADIL shows further advancement in the after-hours session.

FULC [https://www.chartmill.com/stock/quote/FULC/profile]
12.04%
FULCRUM THERAPEUTICS INC's (NASDAQ:FULC [https://www.chartmill.com/stock/quote/FULC/profile]) shares rose 12.04% to $8.75. A press release (Fulcrum Therapeutics to Present Results from the 12 mg Dose Cohort of the Phase 1b PIONEER Trial of Pociredir in Sickle Cell Disease [https://www.chartmill.com/news/FULC/gnwcq-2025-7-28-fulcrum-therapeutics-to-present-results-from-the-12-mg-dose-cohort-of-the-phase-1b-pioneer-trial-of-pociredir-in-sickle-cell-disease]) was released earlier today.

CLS [https://www.chartmill.com/stock/quote/CLS/profile]
11.9%
Notable gains for CELESTICA INC (NYSE:CLS [https://www.chartmill.com/stock/quote/CLS/profile]) in the after-hours session, with a 11.9% rise to $194.0 during Monday. The company's earnings where released Yesterday. A press release (Celestica Announces Second Quarter 2025 Financial Results [https://www.chartmill.com/news/CLS/gnwcq-2025-7-28-celestica-announces-second-quarter-2025-financial-results]) was released earlier today.

ARTL [https://www.chartmill.com/stock/quote/ARTL/profile]
11.27%
Impressive after-hours gains for ARTELO BIOSCIENCES INC (NASDAQ:ARTL [https://www.chartmill.com/stock/quote/ARTL/profile]) as its stock price advanced 11.27% to $15.5 during Monday's after-hours session. In the last month the share price increased with 105.0%.

ALBT [https://www.chartmill.com/stock/quote/ALBT/profile]
10.76%
AVALON GLOBOCARE CORP's (NASDAQ:ALBT [https://www.chartmill.com/stock/quote/ALBT/profile]) shares rose 10.76% to $3.29 during Monday's after hours session. The positive market sentiment seen in today's regular session, where ALBT closed with a 30.84% gain, carries over into the after-hours session.

To see the full list of after hours gainers you can use our after hours gainers [https://www.chartmill.com/stock/market/after-market-movers/usa-nyse-nasdaq-amex] page.

TODAY'S AFTER HOURS LOSERS

TICKER
CHANGE
COMMENT

WLGS [https://www.chartmill.com/stock/quote/WLGS/profile]
-29.67%
After today's %ABSPERF% drop, WANG & LEE GROUP INC (NASDAQ:WLGS [https://www.chartmill.com/stock/quote/WLGS/profile]) shows further decline during today's after-hours session with a 29.67% decrease. In the last month the stock gained 85.53%.

BKKT [https://www.chartmill.com/stock/quote/BKKT/profile]
-19.04%
After today's %ABSPERF% drop, BAKKT HOLDINGS INC (NYSE:BKKT [https://www.chartmill.com/stock/quote/BKKT/profile]) shows further decline during today's after-hours session with a 19.04% decrease. Earlier today the company had a press release: Bakkt Announces Preliminary Second Quarter 2025 Financial Results and Definitive Agreement to Sell Loyalty Business [https://www.chartmill.com/news/BKKT/bizwire-2025-7-28-bakkt-announces-preliminary-second-quarter-2025-financial-results-and-definitive-agreement-to-sell-loyalty-business].

ATNF [https://www.chartmill.com/stock/quote/ATNF/profile]
-15.81%
180 LIFE SCIENCES CORP'S (NASDAQ:ATNF [https://www.chartmill.com/stock/quote/ATNF/profile]) stock price decreased by 15.81% to $2.45. In the last month the share price increased with 251.0%.

EXEL [https://www.chartmill.com/stock/quote/EXEL/profile]
-12.59%
EXELIXIS INC'S (NASDAQ:EXEL [https://www.chartmill.com/stock/quote/EXEL/profile]) stock price is showing a decline of 12.59% to a price of $38.8 during the after-hours session. The company's earnings where released Yesterday. Earlier today the company had a press release: Exelixis Announces Second Quarter 2025 Financial Results and Provides Corporate Update [https://www.chartmill.com/news/EXEL/bizwire-2025-7-28-exelixis-announces-second-quarter-2025-financial-results-and-provides-corporate-update].

HLIT [https://www.chartmill.com/stock/quote/HLIT/profile]
-12.36%
HARMONIC INC'S (NASDAQ:HLIT [https://www.chartmill.com/stock/quote/HLIT/profile]) stock price decreased by 12.36% to $8.01. The company's earnings where released Yesterday. The stock is trading 34.34% lower than a year ago.

XPER [https://www.chartmill.com/stock/quote/XPER/profile]
-12.33%
Today's after-hours session sees a continuation of the %ABSPERF% decrease earlier in the day for XPERI INC (NYSE:XPER [https://www.chartmill.com/stock/quote/XPER/profile]). Earlier today the company had a press release: Xperi Inc. Announces Preliminary Second Quarter 2025 Results and Provides Outlook Update [https://www.chartmill.com/news/XPER/bizwire-2025-7-28-xperi-inc-announces-preliminary-second-quarter-2025-results-and-provides-outlook-update].

CREV [https://www.chartmill.com/stock/quote/CREV/profile]
-11.62%
CARBON REVOLUTION PLC'S (NASDAQ:CREV [https://www.chartmill.com/stock/quote/CREV/profile]) stock price is declining with 11.62% to a price of $4.79. Price movements remain volatile as CREV gives back 10.39% of its earlier gains in the after-hours session.

LESL [https://www.chartmill.com/stock/quote/LESL/profile]
-10.94%
LESLIE'S INC'S (NASDAQ:LESL [https://www.chartmill.com/stock/quote/LESL/profile]) shares fell 10.94% to $0.57. Shareholders saw the stock price going 42.22% higher in the past month.

MTSR [https://www.chartmill.com/stock/quote/MTSR/profile]
-8.7%
Following a %ABSPERF% loss in the regular session, METSERA INC (NASDAQ:MTSR [https://www.chartmill.com/stock/quote/MTSR/profile]) exhibits further decline during today's after-hours session. Earlier today the company had a press release: Metsera Reports Second Quarter 2025 Financial Results and Continued Portfolio Progress [https://www.chartmill.com/news/MTSR/gnwcq-2025-7-28-metsera-reports-second-quarter-2025-financial-results-and-continued-portfolio-progress].

SEI [https://www.chartmill.com/stock/quote/SEI/profile]
-8.31%
SOLARIS ENERGY INFRASTRUCTUR'S (NYSE:SEI [https://www.chartmill.com/stock/quote/SEI/profile]) shares fell 8.31% to $29.9 during Monday's after hours session. The stock is trading 39.48% higher than 3 months ago.

For the full after hours loser list go to our after hours losers [https://www.chartmill.com/stock/market/after-market-movers/usa-nyse-nasdaq-amex] page.