Monday's pre-market session: top gainers and losers in the S&P500 index

By Mill Chart - Last update: Aug 4, 2025

As we await the opening of the US market on Monday, let's delve into the pre-market session and discover the S&P500 top gainers and losers shaping the early market sentiment.


premarket

Pre-market gainers

TickerChangeComment
IDXX13.9%IDEXX LABORATORIES INC's (NASDAQ:IDXX) shares surged 13.9% to reach $610.0 during the pre-market session on Monday. The company's earnings where released Yesterday. A press release (IDEXX Laboratories Announces Second Quarter Results) was released earlier today.
PPG5.0%The pre-market session on Monday saw a significant rise in PPG INDUSTRIES INC's (NYSE:PPG) shares, climbing 5.0% to $109.66.
APH4.09%Pre-market trading on Monday showed positive momentum for AMPHENOL CORP-CL A (NYSE:APH), as the stock price advanced 4.09% to reach $108.58. Earlier today the company had a press release: Amphenol Corporation to Acquire Connectivity and Cable Solutions Business From CommScope.
TSN4.02%Exciting news for TYSON FOODS INC-CL A (NYSE:TSN) as their shares soared 4.02% to $54.64 during the pre-market session on Monday. yesterday the company released their earnings.
ETN3.31%EATON CORP PLC's (NYSE:ETN) shares surged 3.31% to reach $393.91 during the pre-market session on Monday. EATON CORP PLC is releasing earnings today. In the last 3 months the stock gained 27.22%.
SMCI2.58%During Monday's pre-market trading, SUPER MICRO COMPUTER INC (NASDAQ:SMCI) demonstrated strong momentum, with the stock price rising 2.58% to $58.1. Today SMCI is releasing earnings. In the last 3 months the stock gained 68.02%.
AMD2.4%ADVANCED MICRO DEVICES (NASDAQ:AMD) rose 2.4% to $175.82 during Monday's pre-market session. The company is releasing earnings today. Shareholders saw the stock price going 24.5% higher in the past month.
WAT2.3%WATERS CORP's (NYSE:WAT) shares rose 2.3% to $297.0 during Monday's pre-market session. WATERS CORP released earnings Yesterday. Shareholders saw the stock price going 30.13% lower is the past 6 months.
TSLA2.27%TESLA INC (NASDAQ:TSLA) recorded a 2.27% increase in share price during the pre-market session, reaching $309.49 on Monday. In the last 6 months the stock lost 25.2%.
ALGN2.18%ALIGN TECHNOLOGY INC's (NASDAQ:ALGN) stock price increased by 2.18% to $139.5. The stock is trading 30.64% lower than a month ago.

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

PPG INDUSTRIES INC

NYSE:PPG (2/12/2026, 8:10:43 PM)

After market: 131.49 -0.07 (-0.05%)

131.56

+0.53 (+0.4%)


TYSON FOODS INC-CL A

NYSE:TSN (2/12/2026, 8:19:04 PM)

After market: 63.43 +0.12 (+0.19%)

63.31

-1.03 (-1.6%)


IDEXX LABORATORIES INC

NASDAQ:IDXX (2/12/2026, 8:00:02 PM)

After market: 617 -0.2 (-0.03%)

617.2

-31.53 (-4.86%)


ALIGN TECHNOLOGY INC

NASDAQ:ALGN (2/12/2026, 8:00:00 PM)

After market: 183.86 0 (0%)

183.86

-13.65 (-6.91%)


EATON CORP PLC

NYSE:ETN (2/12/2026, 8:04:00 PM)

After market: 391 +0.67 (+0.17%)

390.33

-5.76 (-1.45%)


AMPHENOL CORP-CL A

NYSE:APH (2/12/2026, 8:04:00 PM)

Premarket: 142.98 -0.75 (-0.52%)

143.73

-0.31 (-0.22%)


SUPER MICRO COMPUTER INC

NASDAQ:SMCI (2/12/2026, 8:16:09 PM)

Premarket: 30.63 +0.2 (+0.66%)

30.43

-1.61 (-5.02%)


WATERS CORP

NYSE:WAT (2/12/2026, 8:21:03 PM)

After market: 319.83 0 (0%)

319.83

-9.37 (-2.85%)


ADVANCED MICRO DEVICES

NASDAQ:AMD (2/12/2026, 8:00:00 PM)

Premarket: 208.37 +2.43 (+1.18%)

205.94

-7.64 (-3.58%)


TESLA INC

NASDAQ:TSLA (2/12/2026, 8:19:01 PM)

Premarket: 415.62 -1.45 (-0.35%)

417.07

-11.2 (-2.62%)



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