Back to top

Which S&P500 stocks are showing activity after the closing bell on Tuesday?

After the conclusion of the US market's regular session on Tuesday, let's examine the after-hours session and unveil the notable S&P500 performers among the top gainers and losers.


postmarket

S&P500 Gainers

TickerChangeComment
TER13.34%TERADYNE INC's (NASDAQ:TER) shares rose 13.34% to $363.41. The stock is trading 30.78% lower than a month ago.
STX7.32%SEAGATE TECHNOLOGY HOLDINGS (NASDAQ:STX) showcases remarkable after-hours performance, with a 7.32% rise to $802.0 during Tuesday's after-hours trading. Earlier today the company had a press release: Seagate Technology Reports Fiscal Fourth Quarter and Fiscal Year 2026 Financial Results.
F6.69%Impressive after-hours gains for FORD MOTOR CO (NYSE:F) as its stock price advanced 6.69% to $15.96 during Tuesday's after-hours session. A press release (Ford Reports Second-Quarter 2026 Financial Results) was released earlier today.
WDC4.42%WESTERN DIGITAL CORP (NASDAQ:WDC) exhibits strong performance after hours, with shares rising 4.42% to $484.0 during Tuesday's after-hours session. In the last month the share price dropped with 28.9%.
EXE2.63%Notable gains for EXPAND ENERGY CORP (NASDAQ:EXE) in the after-hours session, with a 2.63% rise to $90.85 during Tuesday. A press release (Expand Energy Corporation Reports Second Quarter 2026 Results) was released earlier today.

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

After hours losers

TickerChangeComment
CSGP-11.21%After today's %ABSPERF% drop, COSTAR GROUP INC (NASDAQ:CSGP) shows further decline during today's after-hours session with a 11.21% decrease. A press release (CoStar Group Q2 2026 Results Mark a Profitability Inflection with Revenue Up 18%, Net Income Increasing 817%, and Adjusted EBITDA More Than Doubling Year-over-Year) was released earlier today.
KLAC-8.98%The after-hours session reflects KLA CORP (NASDAQ:KLAC)'s ongoing correction after experiencing a %ABSPERF% loss in the regular trading hours. A press release (KLA CORPORATION REPORTS FISCAL 2026 FOURTH QUARTER AND FULL YEAR RESULTS) was released earlier today.
PPG-3.51%Following a %ABSPERF% loss in the regular session, PPG INDUSTRIES INC (NYSE:PPG) exhibits further decline during today's after-hours session. A press release (PPG reports second quarter 2026 financial results) was released earlier today.
ACGL-2.39%ARCH CAPITAL GROUP LTD's (NASDAQ:ACGL) shares declined by 2.39% to $103.94 during Tuesday's after-hours session. Earlier today the company had a press release: Arch Capital Group Ltd. Reports 2026 Second Quarter Results.
CNC-2.28%CENTENE CORP's (NYSE:CNC) shares declined by 2.28% to $62.45 during Tuesday's after-hours session. A press release (CENTENE ANNOUNCES BOARD OF DIRECTORS CHANGES) was released yesterday.
V-2.07%VISA INC-CLASS A SHARES's (NYSE:V) stock price is declining with 2.07% to a price of $359.0. Earlier today the company had a press release: Visa Fiscal Third Quarter 2026 Financial Results.

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

Read full article here »

In-Depth Zacks Research for the Tickers Above

Normally $25 each - click below to receive one report FREE:

Arch Capital Group Ltd. (ACGL)

Centene Corporation (CNC)

CoStar Group, Inc. (CSGP)

Expand Energy Corporation (EXE)

Ford Motor Company (F)

KLA Corporation (KLAC)

PPG Industries, Inc. (PPG)

Seagate Technology Holdings PLC (STX)

Teradyne, Inc. (TER)

Visa Inc. (V)

Western Digital Corporation (WDC)