Wednesday's pre-market session: top gainers and losers

By Mill Chart - Last update: Aug 20, 2025

Before the US market kicks off on Wednesday, let's examine the pre-market session and unveil the notable performers among the top gainers and losers.


premarket

Pre-market gainers

TickerChangeComment
NBY73.35%Investors witnessed a remarkable surge in NOVABAY PHARMACEUTICALS INC (NYSEARCA:NBY) during Wednesday's pre-market session, with the stock price rising 73.35% to $1.04.
SISI49.09%SHINECO INC (NASDAQ:SISI) experienced an impressive 49.09% increase in share price, reaching $7.38 during the pre-market session on Wednesday. In the last month the share price dropped with 40.86%.
STAI30.09%Exciting news for SCANTECH AI SYSTEMS INC (NASDAQ:STAI) as their shares soared 30.09% to $0.61 during the pre-market session on Wednesday. A press release (ScanTech AI Strengthens Service Capabilities by Selecting Curie Technologies) was released yesterday.
AUUD26.94%During Wednesday's pre-market trading, AUDDIA INC (NASDAQ:AUUD) demonstrated strong momentum, with the stock price rising 26.94% to $2.78. The stock is trading 48.35% lower than a month ago.
RCKT24.74%ROCKET PHARMACEUTICALS INC (NASDAQ:RCKT) rose 24.74% to $3.63 during Wednesday's pre-market session. In the last 3 months the stock lost 53.59%.
BEEM15.73%During Wednesday's pre-market session, BEAM GLOBAL (NASDAQ:BEEM) exhibited strong growth, with the stock price climbing 15.73% to $2.87. In the last 3 months the stock gained 49.4%.
AHL14.39%Pre-market trading on Wednesday showed positive momentum for ASPEN INSURANCE HOLDINGS-A (NYSE:AHL), as the stock price advanced 14.39% to reach $31.64. Shareholders saw the stock price going 20.95% lower in the past 3 months.
GLE14.27%GLOBAL ENGINE GROUP HOLDIN-A (NASDAQ:GLE) rose 14.27% to $0.81 during Wednesday's pre-market session. In the last month the stock lost 79.95%.
AMP.V11.15%During Wednesday's pre-market session, (NYSE:AMP.V) experienced a 11.15% increase, with the stock price reaching $1.75. The stock is trading 28.64% lower than a month ago.
MIMI9.84%MINT INCORPORATION LTD-A (NASDAQ:MIMI) recorded a 9.84% increase in share price during the pre-market session, reaching $8.15 on Wednesday. Shareholders saw the stock price going 43.8% higher in the past 3 months.

For the full premarket gainers list go to our premarket gainers page.

Today's pre-market losers

TickerChangeComment
NVNO-72.32%The stock price of ENVVENO MEDICAL CORP (NASDAQ:NVNO) is declining by 72.32%, reaching $1.16 during Wednesday's pre-market session. The challenges persist for NVNO as it registered a -16.12% drop during the regular session yesterday, and this trend continued with another decline of 72.32% in today's pre-market session. A press release (enVVeno Receives Not-Approvable Letter from the FDA for the VenoValve(R)) was released earlier today.
BSLKW-31.7%Despite yesterday's decline, GOLDEN ARROW MERGER A -CW26 (NASDAQ:BSLKW) experienced a further 31.7% decrease in share price during Wednesday's pre-market session, reaching $0.04. In the last month the share price increased with 58.21%.
ADD-29.49%The stock price of COLOR STAR TECHNOLOGY CO-A (NASDAQ:ADD) is declining by 29.49%, reaching $0.09 during Wednesday's pre-market session. Prices are quite volatile now: this is a reversal from yesterday's 39.13% gain.
JHX-27.19%Investors observed a 27.19% decline in JAMES HARDIE IND PLC's (NYSE:JHX) stock price, which now stands at $20.7 during Wednesday's pre-market session. A press release (James Hardie Reports First Quarter FY26 Results; Issues FY26 Guidance Reflecting Closing of AZEK Acquisition) was released yesterday.
PRFX-24.47%PAINREFORM LTD's (NASDAQ:PRFX) stock price recorded a 24.47% decrease, falling to $1.79. After experiencing a 76.87% increase in yesterday's session, PRFX is showing a reversal in today's pre-market session with a 24.47% decrease.
LZB-21.89%LA-Z-BOY INC's (NYSE:LZB) shares fell 21.89% to $30.55.
CTSO-21.3%During Wednesday's pre-market session, the shares of CYTOSORBENTS CORP (NASDAQ:CTSO) declined by 21.3%, reaching $0.85. In the last 3 months the stock gained 27.81%.
SUGP-20.72%Despite yesterday's decline, SU GROUP HOLDINGS LTD (NASDAQ:SUGP) experienced a further 20.72% decrease in share price during Wednesday's pre-market session, reaching $0.46. Shareholders saw the stock price going 28.63% lower in the past month.
GXAI-16.99%Despite yesterday's decline, GAXOS.AI INC (NASDAQ:GXAI) experienced a further 16.99% decrease in share price during Wednesday's pre-market session, reaching $1.71. After yesterdays gain of 87.27%, it goes down with 16.99% in today's pre-market session.
TBH-15.52%During Wednesday's pre-market session, the shares of BRAG HOUSE HOLDINGS INC (NASDAQ:TBH) declined by 15.52%, reaching $1.0. Shareholders saw the stock price going 46.22% higher in the past month.

For the full premarket loser list go to our premarket losers page.

LA-Z-BOY INC

NYSE:LZB (3/10/2026, 4:15:00 PM)

After market: 33.52 0 (0%)

33.52

-0.35 (-1.03%)


ASPEN INSURANCE HOLDINGS-A

NYSE:AHL (2/23/2026, 8:04:00 PM)

After market: 37.51 +0.01 (+0.03%)

37.5

0 (0%)


NOVABAY PHARMACEUTICALS INC

NYSEARCA:NBY (3/10/2026, 4:15:00 PM)

1.26

+0.02 (+1.61%)


JAMES HARDIE IND PLC

NYSE:JHX (3/10/2026, 4:15:00 PM)

After market: 20.85 0 (0%)

20.85

-0.58 (-2.71%)


CYTOSORBENTS CORP

NASDAQ:CTSO (3/10/2026, 4:13:12 PM)

0.782

-0.03 (-3.44%)


ROCKET PHARMACEUTICALS INC

NASDAQ:RCKT (3/10/2026, 4:14:58 PM)

After market: 5.4 +0.1 (+1.89%)

5.3

+0.19 (+3.72%)


PRF TECHNOLOGIES LTD

NASDAQ:PRFX (3/10/2026, 4:00:00 PM)

2.67

+0.05 (+1.91%)


BEAM GLOBAL

NASDAQ:BEEM (3/10/2026, 4:10:11 PM)

After market: 1.5407 -0.04 (-2.49%)

1.58

+0.03 (+1.94%)


AUDDIA INC

NASDAQ:AUUD (3/10/2026, 4:16:02 PM)

0.8

+0.07 (+9.59%)


ENVVENO MEDICAL CORP

NASDAQ:NVNO (3/10/2026, 4:04:13 PM)

12

+0.17 (+1.44%)


SHINECO INC

NASDAQ:SISI (10/6/2025, 9:02:19 PM)

After market: 6.27 +0.67 (+11.96%)

5.6

-0.17 (-2.95%)


NYSE:AMP.V (3/10/2026, 4:15:00 PM)

7.97

+0.42 (+5.56%)


COLOR STAR TECHNOLOGY CO-A

NASDAQ:ADD (8/21/2025, 8:00:00 PM)

After market: 0.0594 0 (-1.82%)

0.0605

-0.01 (-17.12%)


GAXOS.AI INC

NASDAQ:GXAI (3/10/2026, 4:16:11 PM)

After market: 1.3712 -0.03 (-2.06%)

1.4

-0.11 (-7.28%)


SU GROUP HOLDINGS LTD

NASDAQ:SUGP (3/10/2026, 4:10:05 PM)

5.12

-0.15 (-2.85%)


GOLDEN ARROW MERGER A -CW26

NASDAQ:BSLKW (1/2/2026, 8:02:28 PM)

After market: 0.0167 0 (-21.6%)

0.0213

+0 (+28.31%)


GLOBAL ENGINE GROUP HOLDIN-A

NASDAQ:GLE (3/10/2026, 4:04:25 PM)

0.397

+0.01 (+1.79%)


SCANTECH AI SYSTEMS INC

NASDAQ:STAI (2/9/2026, 8:00:01 PM)

After market: 0.6252 -0.27 (-30.54%)

0.9001

-0.59 (-39.59%)


MINT INCORPORATION LTD-A

NASDAQ:MIMI (3/10/2026, 4:12:35 PM)

0.312

+0.01 (+3.14%)


BRAG HOUSE HOLDINGS INC

NASDAQ:TBH (3/10/2026, 4:00:32 PM)

0.241

-0.01 (-5.49%)



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