Top movers in Monday's after hours session

Last update: May 19, 2025

After the closing bell on Monday, let's take a glimpse of the US markets and explore the top gainers and losers in today's after-hours session.

After hours gainers

Ticker	Change	Comment
BIAF	37.41%	BIOAFFINITY TECHNOLOGIES INC's (NASDAQ:BIAF) stock price is advancing with 37.41% to a price of $0.31. Today BIAF released their earnings. Shareholders saw the stock price going 54.67% lower in the past month.
GTI	22.35%	GRAPHJET TECHNOLOGY's (NASDAQ:GTI) shares rose 22.35% to $0.19. Today's after-hours session reflects the continued strength of GTI, following its 16.49% gain during the regular trading hours.
ARMP	20.25%	Impressive after-hours gains for ARMATA PHARMACEUTICALS INC (NYSEARCA:ARMP) as its stock price advanced 20.25% to $2.85 during Monday's after-hours session. The positive market sentiment seen in today's regular session, where ARMP closed with a 75.56% gain, carries over into the after-hours session.
BON	20.0%	In the after-hours session on Monday, BON NATURAL LIFE LTD-A (NASDAQ:BON) experienced a notable 20.0% increase, driving its shares to $1.56. Also in the regular session BON had a very good day: shares closed with a 2.0K% gain.
SYTA	19.16%	Positive after-hours movement for SIYATA MOBILE INC (NASDAQ:SYTA) as its shares recorded a 19.16% increase, reaching $4.85 during Monday's after-hours session. Today's 76.19% gain extends further in today's after-hours session with an additional 19.16% increase.
ASPI	12.77%	After the closing bell, ASP ISOTOPES INC (NASDAQ:ASPI) demonstrated strong momentum in the after-hours session, with a 12.77% rise to $8.48. A press release (ASP Isotopes Inc. enters into Definitive Agreements with TerraPower including Loan Agreement for Construction of a HALEU Production Facility and Supply Agreements for HALEU) was released earlier today.
HCTI	10.99%	HEALTHCARE TRIANGLE INC (NASDAQ:HCTI) exhibits strong performance after hours, with shares rising 10.99% to $0.01 during Monday's after-hours session. Today's 15.19% gain extends further in today's after-hours session with an additional 10.99% increase.
NWTN	6.62%	Promising after-hours performance observed for NWTN INC - CLASS B (NASDAQ:NWTN) as its shares surged 6.62% to $2.9 during Monday's after-hours trading. Today's after-hours session reflects the continued strength of NWTN, following its 45.45% gain during the regular trading hours.
FLD	6.28%	After the closing bell, FOLD HOLDINGS INC (NASDAQ:FLD) demonstrated strong momentum in the after-hours session, with a 6.28% rise to $4.4. In the last 3 months the stock lost 40.52%.
PRPH	6.25%	PROPHASE LABS INC's (NASDAQ:PRPH) shares rose 6.25% to $0.34. Despite a -17.31% decrease earlier today, there is a notable recovery in today's after-hours session for PRPH. Today PRPH released their earnings.

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

After hours losers

Ticker	Change	Comment
WTO	-20.0%	UTIME LTD's (NASDAQ:WTO) stock price is showing a decline of 20.0% to a price of $1.88 during the after-hours session. After running up 23.04% in today's session, WTO is pulling back after hours.
APCX	-18.42%	Following a -19.92% loss in the regular session, APPTECH PAYMENTS CORP (NASDAQ:APCX) exhibits further decline during today's after-hours session. APCX already had a hard day: closing -19.92% lower during the regular session.
EKSO	-15.44%	Following a -11.57% loss in the regular session, EKSO BIONICS HOLDINGS INC (NASDAQ:EKSO) exhibits further decline during today's after-hours session. Despite a -11.57% decrease earlier today, EKSO continues to decline during the after-hours session with another 15.44% drop.
MULN	-14.71%	Following a 100.0% loss in the regular session, MULLEN AUTOMOTIVE INC (NASDAQ:MULN) exhibits further decline during today's after-hours session. Despite a significant 100.0% gain earlier today, MULN faces a reversal and declines in the after-hours session.
FAAS	-11.15%	Today's after-hours session sees a continuation of the 83.24% decrease earlier in the day for DIGIASIA CORP (NASDAQ:FAAS). Price movements remain volatile as FAAS gives back 83.24% of its earlier gains in the after-hours session.
ASBP	-10.0%	ASPIRE BIOPHARMA HOLDINGS IN's (NASDAQ:ASBP) shares experienced a 10.0% decrease to $0.23 in the after-hours session. In the last month the stock lost 49.49%.
TC	-8.71%	The after-hours session reflects TOKEN CAT LTD (NASDAQ:TC)'s ongoing correction after experiencing a %ABSPERF% loss in the regular trading hours. Shareholders saw the stock price going 45.28% higher in the past month.
LGHL	-8.39%	The after-hours session reflects LION GROUP HOLDING LTD-S ADR (NASDAQ:LGHL)'s ongoing correction after experiencing a 16.32% loss in the regular trading hours. After registering a 16.32% gain earlier today, LGHL is experiencing a 8.39% decline in today's after-hours session.
PTIX	-8.11%	PROTAGENIC THERAPEUTICS INC's (NASDAQ:PTIX) shares experienced a 8.11% decrease to $10.2 in the after-hours session. Price volatility intensifies as PTIX retraces its 266.0% gain during the after-hours session. Earlier today the company had a press release: PTIX Stock Alert: Halper Sadeh LLC Is Investigating Whether the Merger of Protagenic Therapeutics, Inc. Is Fair to Shareholders.
LOBO	-6.78%	LOBO EV TECHNOLOGIES LTD's (NASDAQ:LOBO) stock price saw a decrease of 6.78% to $1.1 during Monday's after-hours session. Prices are quite volatile now: this is a reversal from 10.28% gain.

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