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

By Mill Chart - Last update: Aug 26, 2025

After the conclusion of the US market's regular session on Tuesday, let's examine the after-hours session and unveil the notable performers among the top gainers and losers.


postmarket

Today's after hours gainers

TickerChangeComment
NBY47.78%Promising after-hours performance observed for NOVABAY PHARMACEUTICALS INC (NYSEARCA:NBY) as its shares surged 47.78% to $1.33 during Tuesday's after-hours trading. The stock is trading 42.41% higher than a month ago.
MDB23.4%Positive market activity for MONGODB INC (NASDAQ:MDB) after regular trading hours, with a 23.4% increase to $264.5 in the after-hours session on Tuesday. yesterday the company released their earnings. In the last year the stock lost 26.29%.
BTAI17.94%Positive after-hours movement for BIOXCEL THERAPEUTICS INC (NASDAQ:BTAI) as its shares recorded a 17.94% increase, reaching $6.18 during Tuesday's after-hours session. The stock is trading 230.0% higher than a month ago.
SLRX16.49%SALARIUS PHARMACEUTICALS INC (NASDAQ:SLRX) rose 16.49% to $6.71 during Tuesday's after hours session. In the last month the stock lost 61.58%.
BRO12.3%Notable gains for BROWN & BROWN INC (NYSE:BRO) in the after-hours session, with a 12.3% rise to $107.86 during Tuesday.
SIGI10.59%In the after-hours session on Tuesday, SELECTIVE INSURANCE GROUP (NASDAQ:SIGI) experienced a notable 10.59% increase, driving its shares to $86.16.
EXLS9.36%EXLSERVICE HOLDINGS INC's (NASDAQ:EXLS) stock price is advancing with 9.36% to a price of $47.66.
OLED8.59%Impressive after-hours gains for UNIVERSAL DISPLAY CORP (NASDAQ:OLED) as its stock price advanced 8.59% to $155.88 during Tuesday's after-hours session. The stock is trading 25.9% lower than a year ago.
CNI8.29%After the regular session, CANADIAN NATL RAILWAY CO (NYSE:CNI) continues to impress in the after-hours session, with a 8.29% increase to $104.6.
SKYT8.21%After the regular session, SKYWATER TECHNOLOGY INC (NASDAQ:SKYT) continues to impress in the after-hours session, with a 8.21% increase to $13.05. In the last 3 months the share price increased with 33.41%.

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

Today's after hours losers

TickerChangeComment
FEBO-18.93%FENBO HOLDINGS LTD's (NASDAQ:FEBO) stock price is declining with 18.93% to a price of $0.73. Following a 21.62% increase in the regular trading session, FEBO is showing signs of weakness with a 18.93% decline in after-hours trading.
ADNWW-15.73%Price volatility persists as AMCI ACQUISITION CORP-CW26 (NASDAQ:ADNWW) closed the regular session with a %ABSPERF% loss, and the downward trend continues in the after-hours session. The stock is trading 218.0% higher than a month ago.
STC-15.18%STEWART INFORMATION SERVICES's (NYSE:STC) stock price is declining with 15.18% to a price of $61.61. In the last 3 months the share price increased with 20.38%.
SBCF-15.18%After today's %ABSPERF% drop, SEACOAST BANKING CORP/FL (NASDAQ:SBCF) shows further decline during today's after-hours session with a 15.18% decrease.
BSY-11.15%The after-hours session reflects BENTLEY SYSTEMS INC-CLASS B (NASDAQ:BSY)'s ongoing correction after experiencing a %ABSPERF% loss in the regular trading hours. The stock is trading 22.53% higher than 6 months ago.
DEVS-10.91%Following a -11.29% loss in the regular session, DEVVSTREAM CORP (NASDAQ:DEVS) exhibits further decline during today's after-hours session. The regular session ended on a negative note with DEVS closing -11.29% lower, and the after-hours session reflects a continuation of the bearish sentiment.
WORX-10.53%SCWORX CORP's (NASDAQ:WORX) shares fell 10.53% to $0.34 during Tuesday's after hours session. Today's after-hours session indicates a reversal in WORX's earlier 30.67% gain, with prices exhibiting heightened volatility. A press release (SCWorx Expands Healthcare Data Management Network with New Collaboration) was released earlier today.
NCEW-10.33%NEW CENTURY LOGISTICS BVI LT's (NASDAQ:NCEW) shares fell 10.33% to $0.55 during Tuesday's after hours session. In the last month the share price dropped with 21.16%.
IVVD-9.22%Price volatility persists as INVIVYD INC (NASDAQ:IVVD) closed the regular session with a 84.03% loss, and the downward trend continues in the after-hours session. After registering a 84.03% gain earlier today, IVVD is experiencing a 9.22% decline in today's after-hours session.
AZN-8.79%ASTRAZENECA PLC-SPONS ADR's (NASDAQ:AZN) stock price is showing a decline of 8.79% to a price of $73.01 during the after-hours session.

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

BROWN & BROWN INC

NYSE:BRO (3/6/2026, 8:04:00 PM)

After market: 73.5 0 (0%)

73.5

+0.38 (+0.52%)


SELECTIVE INSURANCE GROUP

NASDAQ:SIGI (3/6/2026, 8:00:02 PM)

After market: 80.08 0 (0%)

80.08

-0.8 (-0.99%)


SEACOAST BANKING CORP/FL

NASDAQ:SBCF (3/6/2026, 8:00:02 PM)

After market: 30.29 0 (0%)

30.29

-0.68 (-2.2%)


STEWART INFORMATION SERVICES

NYSE:STC (3/6/2026, 8:04:00 PM)

After market: 67 0 (0%)

67

-2.09 (-3.03%)


ASTRAZENECA PLC-SPONS ADR

NYSE:AZN (3/6/2026, 8:04:00 PM)

After market: 193.7 -0.52 (-0.27%)

194.22

-3.3 (-1.67%)


NOVABAY PHARMACEUTICALS INC

NYSEARCA:NBY (3/6/2026, 8:04:00 PM)

After market: 1.44 +0.05 (+3.6%)

1.39

-0.09 (-6.08%)


EXLSERVICE HOLDINGS INC

NASDAQ:EXLS (3/6/2026, 8:14:46 PM)

After market: 32.51 0 (0%)

32.51

-0.04 (-0.12%)


CANADIAN NATL RAILWAY CO

NYSE:CNI (3/6/2026, 8:09:17 PM)

After market: 106.78 0 (0%)

106.78

-2.89 (-2.64%)


UNIVERSAL DISPLAY CORP

NASDAQ:OLED (3/6/2026, 8:00:02 PM)

After market: 97 -0.03 (-0.03%)

97.03

-2.79 (-2.8%)


MONGODB INC

NASDAQ:MDB (3/6/2026, 8:00:00 PM)

After market: 269.95 -0.52 (-0.19%)

270.47

+6.54 (+2.48%)


BIOXCEL THERAPEUTICS INC

NASDAQ:BTAI (3/6/2026, 8:03:43 PM)

After market: 1.4726 -0.01 (-0.5%)

1.48

-0.13 (-8.07%)


SCWORX CORP

NASDAQ:WORX (3/6/2026, 8:00:02 PM)

After market: 0.1195 0 (-2.05%)

0.122

0 (-3.33%)


SALARIUS PHARMACEUTICALS INC

NASDAQ:SLRX (1/7/2026, 8:00:02 PM)

After market: 0.835 -0.01 (-0.6%)

0.84

+0.19 (+29.23%)


BENTLEY SYSTEMS INC-CLASS B

NASDAQ:BSY (3/6/2026, 8:03:43 PM)

After market: 39.79 0 (0%)

39.79

+0.28 (+0.71%)


AMCI ACQUISITION CORP-CW26

NASDAQ:ADNWW (10/29/2025, 8:12:04 PM)

After market: 0.0044 +0 (+51.72%)

0.0029

-0.01 (-73.15%)


SKYWATER TECHNOLOGY INC

NASDAQ:SKYT (3/6/2026, 8:00:02 PM)

After market: 28.68 -0.24 (-0.83%)

28.92

-0.3 (-1.03%)


INVIVYD INC

NASDAQ:IVVD (3/6/2026, 8:27:38 PM)

After market: 1.82 +0.02 (+1.11%)

1.8

+0.06 (+3.45%)


FENBO HOLDINGS LTD-CLASS A

NASDAQ:FEBO (3/5/2026, 8:00:01 PM)

After market: 1 -0.01 (-0.99%)

1.01

0 (-0.49%)


DEVVSTREAM CORP

NASDAQ:DEVS (3/6/2026, 8:11:59 PM)

After market: 0.812 0 (0%)

0.812

+0.02 (+2.46%)


NEW CENTURY LOGISTICS BVI LT

NASDAQ:NCEW (3/6/2026, 8:00:02 PM)

8.6

0 (0%)



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