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What's going on in today's pre-market session: S&P500 movers

By Mill Chart

Last update: May 20, 2025

Pre-market stock analysis of S&P500 stocks on 2025-05-20: top gainers and losers in today's session.

Gainers

TickerChangeComment
LNT4.52%During Tuesday's pre-market session, ALLIANT ENERGY CORP (NASDAQ:LNT) experienced a 4.52% increase, with the stock price reaching $65.94. The stock is trading 26.31% higher than a year ago.
TMO3.77%THERMO FISHER SCIENTIFIC INC's (NYSE:TMO) shares rose 3.77% to $429.52 during Tuesday's pre-market session. In the last 3 months the stock lost 22.28%.
HPE3.38%HEWLETT PACKARD ENTERPRISE's (NYSE:HPE) stock price increased by 3.38% to $18.05. A press release (Hewlett Packard Enterprise Deepens Integration with NVIDIA on AI Factory Portfolio) was released yesterday.
UNH2.69%During Tuesday's pre-market session, UNITEDHEALTH GROUP INC (NYSE:UNH) exhibited strong growth, with the stock price climbing 2.69% to $324.39. Yesterday the company had a press release: UNITEDHEALTH GROUP INCORPORATED (NYSE: UNH) SHAREHOLDER ALERT Bernstein Liebhard LLP Reminds UnitedHealth Group Incorporated Investors of Upcoming Deadline.
EW2.51%EDWARDS LIFESCIENCES CORP's (NYSE:EW) shares rose 2.51% to $80.0.
HD2.4%HOME DEPOT INC (NYSE:HD) rose 2.4% to $388.5 during Tuesday's pre-market session. yesterday the company released their earnings.
CI2.17%Pre-market trading on Tuesday showed positive momentum for THE CIGNA GROUP (NYSE:CI), as the stock price advanced 2.17% to reach $328.95.

For the full premarket gainers list go to our premarket gainers page.

Today's pre-market losers

TickerChangeComment
DE-5.96%DEERE & CO's (NYSE:DE) shares fell 5.96% to $498.25. The stock is trading 41.3% higher than a year ago.
GE-5.73%GENERAL ELECTRIC's (NYSE:GE) shares fell 5.73% to $221.81 during Tuesday's pre-market session. The stock is trading 31.93% higher than a month ago.
MCK-5.23%Investors observed a 5.23% decline in MCKESSON CORP's (NYSE:MCK) stock price, which now stands at $688.4 during Tuesday's pre-market session. In the last 3 months the stock gained 21.53%.
RMD-4.09%RESMED INC's (NYSE:RMD) shares fell 4.09% to $243.0. In the last month the share price increased with 20.15%.
IBM-3.81%The stock price of INTL BUSINESS MACHINES CORP (NYSE:IBM) is declining by 3.81%, reaching $258.19 during Tuesday's pre-market session. Shareholders saw the stock price going 20.38% higher is the past 6 months.
MCD-3.55%MCDONALD'S CORP's (NYSE:MCD) stock price decreased by 3.55% to $309.83. In the last year the stock gained 24.45%.
BSX-3.29%BOSTON SCIENTIFIC CORP's (NYSE:BSX) shares experienced a 3.29% decline, falling to $103.15 during Tuesday's pre-market session. Shareholders saw the stock price going 41.03% higher is the past year.
TJX-3.22%During Tuesday's pre-market session, the shares of TJX COMPANIES INC (NYSE:TJX) declined by 3.22%, reaching $130.68. TJX is releasing earnings today. In the last year the stock gained 32.2%.
HAS-3.04%HASBRO INC's (NASDAQ:HAS) shares fell 3.04% to $66.11 during Tuesday's pre-market session. Shareholders saw the stock price going 32.29% higher in the past month.
HON-2.86%The stock price of HONEYWELL INTERNATIONAL INC (NASDAQ:HON) is experiencing a decline of 2.86%, reaching $218.51 in today's pre-market session on Tuesday.

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

GENERAL ELECTRIC

NYSE:GE (1/9/2026, 8:04:00 PM)

Premarket: 320.01 -1.58 (-0.49%)

321.59

+7.15 (+2.27%)


THE CIGNA GROUP

NYSE:CI (1/9/2026, 8:04:00 PM)

Premarket: 277.5 -1.45 (-0.52%)

278.95

-4.96 (-1.75%)


UNITEDHEALTH GROUP INC

NYSE:UNH (1/9/2026, 8:04:00 PM)

Premarket: 340.62 -3.36 (-0.98%)

343.98

-2.87 (-0.83%)


EDWARDS LIFESCIENCES CORP

NYSE:EW (1/9/2026, 8:04:00 PM)

After market: 85.13 0 (0%)

85.13

+0.55 (+0.65%)


RESMED INC

NYSE:RMD (1/9/2026, 8:23:50 PM)

After market: 252 -0.47 (-0.19%)

252.47

+1.55 (+0.62%)


BOSTON SCIENTIFIC CORP

NYSE:BSX (1/9/2026, 8:04:00 PM)

Premarket: 98 +0.36 (+0.37%)

97.64

-0.74 (-0.75%)


HONEYWELL INTERNATIONAL INC

NASDAQ:HON (1/9/2026, 8:00:01 PM)

Premarket: 207.14 -0.24 (-0.12%)

207.38

+2.14 (+1.04%)


DEERE & CO

NYSE:DE (1/9/2026, 8:04:00 PM)

After market: 488.2 +0.12 (+0.02%)

488.08

-12.72 (-2.54%)


TJX COMPANIES INC

NYSE:TJX (1/9/2026, 8:04:00 PM)

Premarket: 157.42 -0.39 (-0.25%)

157.81

-0.44 (-0.28%)


MCKESSON CORP

NYSE:MCK (1/9/2026, 11:10:29 PM)

Premarket: 815 -1.06 (-0.13%)

816.06

+1.43 (+0.18%)


HOME DEPOT INC

NYSE:HD (1/9/2026, 8:04:00 PM)

Premarket: 373.71 -0.93 (-0.25%)

374.64

+15.08 (+4.19%)


MCDONALD'S CORP

NYSE:MCD (1/9/2026, 8:04:00 PM)

Premarket: 307.52 +0.2 (+0.07%)

307.32

-1.56 (-0.51%)


INTL BUSINESS MACHINES CORP

NYSE:IBM (1/9/2026, 8:04:00 PM)

Premarket: 301.87 -2.35 (-0.77%)

304.22

+1.5 (+0.5%)


THERMO FISHER SCIENTIFIC INC

NYSE:TMO (1/9/2026, 8:04:00 PM)

After market: 618.86 0 (0%)

618.86

+12.36 (+2.04%)


ALLIANT ENERGY CORP

NASDAQ:LNT (1/9/2026, 8:00:00 PM)

After market: 65.02 0 (0%)

65.02

-0.53 (-0.81%)


HASBRO INC

NASDAQ:HAS (1/9/2026, 8:00:01 PM)

Premarket: 86.72 0 (0%)

86.72

-2.42 (-2.71%)


HEWLETT PACKARD ENTERPRISE

NYSE:HPE (1/9/2026, 8:04:00 PM)

Premarket: 21.89 -0.28 (-1.26%)

22.17

+0.15 (+0.68%)



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