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 (2/27/2026, 8:04:00 PM)

After market: 71.82 0 (0%)

71.82

+0.6 (+0.84%)


SELECTIVE INSURANCE GROUP

NASDAQ:SIGI (2/27/2026, 8:00:02 PM)

After market: 84.04 0 (0%)

84.04

+0.25 (+0.3%)


SEACOAST BANKING CORP/FL

NASDAQ:SBCF (2/27/2026, 8:00:02 PM)

After market: 31.12 0 (0%)

31.12

-1.78 (-5.41%)


STEWART INFORMATION SERVICES

NYSE:STC (2/27/2026, 8:04:00 PM)

After market: 70.99 0 (0%)

70.99

+1.1 (+1.57%)


ASTRAZENECA PLC-SPONS ADR

NYSE:AZN (2/27/2026, 8:04:00 PM)

After market: 208.45 0 (0%)

208.45

+4.47 (+2.19%)


NOVABAY PHARMACEUTICALS INC

NYSEARCA:NBY (2/27/2026, 8:22:22 PM)

After market: 1.42 -0.02 (-1.39%)

1.44

-0.09 (-5.88%)


EXLSERVICE HOLDINGS INC

NASDAQ:EXLS (2/27/2026, 8:00:02 PM)

After market: 31.25 0 (0%)

31.25

+0.26 (+0.84%)


CANADIAN NATL RAILWAY CO

NYSE:CNI (2/27/2026, 8:04:00 PM)

After market: 110.714 -1.48 (-1.32%)

112.19

+1.94 (+1.76%)


UNIVERSAL DISPLAY CORP

NASDAQ:OLED (2/27/2026, 8:25:22 PM)

After market: 106.69 0 (0%)

106.69

-0.37 (-0.35%)


MONGODB INC

NASDAQ:MDB (2/27/2026, 8:17:24 PM)

After market: 327.81 -0.66 (-0.2%)

328.47

-8.14 (-2.42%)


BIOXCEL THERAPEUTICS INC

NASDAQ:BTAI (2/27/2026, 8:00:02 PM)

After market: 1.65 -0.02 (-1.2%)

1.67

-0.09 (-5.11%)


SCWORX CORP

NASDAQ:WORX (2/27/2026, 8:00:02 PM)

After market: 0.3081 -0.03 (-7.84%)

0.3343

+0.02 (+5.46%)


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 (2/27/2026, 8:00:02 PM)

After market: 36.55 0 (0%)

36.55

-0.49 (-1.32%)


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 (2/27/2026, 8:00:02 PM)

After market: 29.51 +0.05 (+0.17%)

29.46

-1.37 (-4.44%)


INVIVYD INC

NASDAQ:IVVD (2/27/2026, 8:12:02 PM)

After market: 1.67 -0.02 (-1.18%)

1.69

-0.01 (-0.59%)


FENBO HOLDINGS LTD-CLASS A

NASDAQ:FEBO (2/27/2026, 8:00:49 PM)

After market: 1.16 +0.1 (+9.43%)

1.06

-0.01 (-0.93%)


DEVVSTREAM CORP

NASDAQ:DEVS (2/27/2026, 8:00:02 PM)

After market: 0.8629 0 (0%)

0.8629

-0.04 (-4.79%)


NEW CENTURY LOGISTICS BVI LT

NASDAQ:NCEW (2/27/2026, 8:22:27 PM)

8.95

+0.1 (+1.13%)



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