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 (2/26/2026, 3:40:09 PM)

342.14

-0.75 (-0.22%)


THE CIGNA GROUP

NYSE:CI (2/26/2026, 3:40:06 PM)

288.945

+4.5 (+1.58%)


UNITEDHEALTH GROUP INC

NYSE:UNH (2/26/2026, 3:40:09 PM)

286.905

+2.7 (+0.95%)


EDWARDS LIFESCIENCES CORP

NYSE:EW (2/26/2026, 3:40:08 PM)

85.725

+2.32 (+2.79%)


RESMED INC

NYSE:RMD (2/26/2026, 3:40:09 PM)

256.69

+4.16 (+1.65%)


BOSTON SCIENTIFIC CORP

NYSE:BSX (2/26/2026, 3:40:09 PM)

75.735

+2.25 (+3.07%)


HONEYWELL INTERNATIONAL INC

NASDAQ:HON (2/26/2026, 3:40:08 PM)

241.36

-0.84 (-0.35%)


DEERE & CO

NYSE:DE (2/26/2026, 3:40:07 PM)

619.88

-3.73 (-0.6%)


TJX COMPANIES INC

NYSE:TJX (2/26/2026, 3:40:08 PM)

158.57

+2.75 (+1.76%)


MCKESSON CORP

NYSE:MCK (2/26/2026, 3:39:33 PM)

975.27

+12.03 (+1.25%)


HOME DEPOT INC

NYSE:HD (2/26/2026, 3:40:07 PM)

376.785

+1.22 (+0.32%)


MCDONALD'S CORP

NYSE:MCD (2/26/2026, 3:40:07 PM)

334.98

+1.97 (+0.59%)


INTL BUSINESS MACHINES CORP

NYSE:IBM (2/26/2026, 3:40:07 PM)

242.065

+4.53 (+1.9%)


THERMO FISHER SCIENTIFIC INC

NYSE:TMO (2/26/2026, 3:40:09 PM)

519.8

+6.12 (+1.19%)


ALLIANT ENERGY CORP

NASDAQ:LNT (2/26/2026, 3:40:03 PM)

71.41

+0.15 (+0.21%)


HASBRO INC

NASDAQ:HAS (2/26/2026, 3:40:07 PM)

100.27

+0.52 (+0.52%)


HEWLETT PACKARD ENTERPRISE

NYSE:HPE (2/26/2026, 3:40:06 PM)

20.81

+0.18 (+0.87%)



Find more stocks in the Stock Screener

Follow ChartMill for more
Follow us on StockTwitsFollow us on InstagramFollow us on FacebookFollow us on YouTube