Wondering what's happening in today's S&P500 pre-market session?

Last update: Jul 23, 2025

As the US market prepares to open on Wednesday, let's get an early glimpse into the pre-market session and identify the S&P500 stocks leading the pack in terms of gains and losses.

Gainers

Ticker	Change	Comment
HES	7.61%	Hess Corporation's (NYSE:HES) shares rose 7.61% to $160.31.
GEV	5.97%	Investors witnessed a remarkable surge in GE VERNOVA INC (NYSE:GEV) during Wednesday's pre-market session, with the stock price rising 5.97% to $581.75. The company's earnings where released Yesterday. In the last 3 months the stock gained 47.41%.
APH	5.89%	AMPHENOL CORP-CL A's (NYSE:APH) shares rose 5.89% to $107.77. AMPHENOL CORP-CL A released earnings Yesterday. Earlier today the company had a press release: Amphenol Reports Record Second Quarter 2025 Results.
LW	5.45%	Investors witnessed a remarkable surge in LAMB WESTON HOLDINGS INC (NYSE:LW) during Wednesday's pre-market session, with the stock price rising 5.45% to $51.85. The company's earnings where released Yesterday. Earlier today the company had a press release: Lamb Weston Reports Fiscal Fourth Quarter and Full Year 2025 Results; Provides Fiscal Year 2026 Outlook.
VST	4.71%	During Wednesday's pre-market session, VISTRA CORP (NYSE:VST) experienced a 4.71% increase, with the stock price reaching $197.99. In the last 3 months the stock gained 49.31%.
NRG	4.2%	During Wednesday's pre-market trading, NRG ENERGY INC (NYSE:NRG) demonstrated strong momentum, with the stock price rising 4.2% to $160.43. Two days ago the company had a press release: NRG Energy, Inc. Announces Quarterly Dividend.
HAS	4.16%	HASBRO INC's (NASDAQ:HAS) shares rose 4.16% to $80.8. The company's earnings where released Yesterday. In the last 3 months the stock gained 27.18%.
TMO	4.06%	Exciting news for THERMO FISHER SCIENTIFIC INC (NYSE:TMO) as their shares soared 4.06% to $445.0 during the pre-market session on Wednesday. THERMO FISHER SCIENTIFIC INC released earnings Yesterday. A press release (Thermo Fisher Scientific Reports Second Quarter 2025 Results) was released earlier today.
TEL	3.9%	TE CONNECTIVITY PLC (NYSE:TEL) recorded a 3.9% increase in share price during the pre-market session, reaching $187.5 on Wednesday. TE CONNECTIVITY PLC released earnings Yesterday. The stock is trading 25.01% higher than 3 months ago.
CEG	3.88%	The pre-market session on Wednesday saw a significant rise in CONSTELLATION ENERGY's (NASDAQ:CEG) shares, climbing 3.88% to $330.12. In the last 3 months the stock gained 42.51%.

To see the full list of premarket gainers you can use our premarket gainers page.

Today's pre-market losers

Ticker	Change	Comment
FI	-17.77%	Despite yesterday's decline, FISERV INC (NYSE:FI) experienced a further 17.77% decrease in share price during Wednesday's pre-market session, reaching $136.49. FISERV INC released earnings Yesterday. A press release (Fiserv Announces Strategic Relationship With TD) was released earlier today.
TXN	-9.73%	The stock price of TEXAS INSTRUMENTS INC (NASDAQ:TXN) is experiencing a decline of 9.73%, reaching $194.0 in today's pre-market session on Wednesday. The stock is trading 31.97% higher than 3 months ago.
OTIS	-6.48%	OTIS WORLDWIDE CORP's (NYSE:OTIS) stock price is declining with 6.48% to a price of $94.45. OTIS WORLDWIDE CORP released earnings Yesterday.
ENPH	-6.38%	ENPHASE ENERGY INC's (NASDAQ:ENPH) stock price decreased by 6.38% to $39.79. In the last month the stock gained 22.97%.
MCHP	-6.21%	Wednesday's pre-market session showed a 6.21% decrease in the stock price of MICROCHIP TECHNOLOGY INC (NASDAQ:MCHP), reaching $70.59. In the last 3 months the share price increased with 60.5%.
ADI	-4.92%	The stock price of ANALOG DEVICES INC (NASDAQ:ADI) is experiencing a decline of 4.92%, reaching $223.91 in today's pre-market session on Wednesday. Shareholders saw the stock price going 21.02% higher in the past 3 months.
ON	-4.72%	The pre-market session on Wednesday witnessed a 4.72% decrease in ON SEMICONDUCTOR's (NASDAQ:ON) shares, with the stock price falling to $59.5. In the last 3 months the share price increased with 57.58%.
NXPI	-3.86%	NXP SEMICONDUCTORS NV's (NASDAQ:NXPI) stock price recorded a 3.86% decrease, falling to $219.2.
T	-3.68%	AT&T INC's (NYSE:T) shares fell 3.68% to $26.41. yesterday the company released their earnings. Shareholders saw the stock price going 20.69% higher is the past 6 months.
ALB	-2.16%	Despite yesterday's decline, ALBEMARLE CORP (NYSE:ALB) experienced a further 2.16% decrease in share price during Wednesday's pre-market session, reaching $81.44. In the last month the share price increased with 43.96%.

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