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Top S&P500 movers in Wednesday's pre-market session

By Mill Chart

Last update: May 14, 2025

The US market session of Wednesday has yet to be opened, let's have a look at the top S&P500 gainers and losers in the pre-market session today.

Gainers

TickerChangeComment
SMCI18.15%Investors witnessed a remarkable surge in SUPER MICRO COMPUTER INC (NASDAQ:SMCI) during Wednesday's pre-market session, with the stock price rising 18.15% to $45.95. Following yesterday's 16.02% increase, SMCI demonstrates further positive momentum in today's pre-market session with a 18.15% gain.
AMD4.17%ADVANCED MICRO DEVICES's (NASDAQ:AMD) shares rose 4.17% to $117.15. A press release (AMD and HUMAIN Form Strategic, $10B Collaboration to Advance Global AI) was released yesterday.
UNH3.4%UNITEDHEALTH GROUP INC (NYSE:UNH) experienced an impressive 3.4% increase in share price, reaching $321.97 during the pre-market session on Wednesday. Yesterday's -17.79% decline in UNH has given way to a potential bounce-back as observed in today's pre-market session. A press release (UNH BREAKING NEWS: UnitedHealth Group Incorporated Replaces CEO and Suspends Guidance – Contact BFA Law about the Class Action if You Lost Money (NYSE:UNH)) was released yesterday.
TSLA3.23%During Wednesday's pre-market trading, TESLA INC (NASDAQ:TSLA) demonstrated strong momentum, with the stock price rising 3.23% to $344.85. The stock is trading 32.38% higher than a month ago.
NVDA3.18%NVIDIA CORP (NASDAQ:NVDA) rose 3.18% to $134.06 during Wednesday's pre-market session. The stock is trading 40.5% higher than a year ago.
VST2.57%The pre-market session on Wednesday saw a significant rise in VISTRA CORP's (NYSE:VST) shares, climbing 2.57% to $158.98. The stock is trading 37.55% higher than a month ago.
NTAP2.48%The pre-market session on Wednesday saw a significant rise in NETAPP INC's (NASDAQ:NTAP) shares, climbing 2.48% to $102.0.
PLTR2.19%Investors witnessed a remarkable surge in PALANTIR TECHNOLOGIES INC-A (NASDAQ:PLTR) during Wednesday's pre-market session, with the stock price rising 2.19% to $130.9. The stock is trading 38.31% higher than a month ago.
ANET2.16%ARISTA NETWORKS INC's (NYSE:ANET) shares rose 2.16% to $99.35. Shareholders saw the stock price going 32.15% higher in the past month.

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

UNITEDHEALTH GROUP INC

NYSE:UNH (5/20/2025, 7:22:40 PM)

After market: 319.34 -2.24 (-0.7%)

321.58

+5.69 (+1.8%)


NETAPP INC

NASDAQ:NTAP (5/20/2025, 6:59:08 PM)

After market: 101.06 0 (0%)

101.06

-0.47 (-0.46%)


SUPER MICRO COMPUTER INC

NASDAQ:SMCI (5/20/2025, 7:22:14 PM)

After market: 42.66 -0.11 (-0.26%)

42.77

-2.02 (-4.51%)


ADVANCED MICRO DEVICES

NASDAQ:AMD (5/20/2025, 7:22:14 PM)

After market: 114 +0.49 (+0.43%)

113.51

-1.23 (-1.07%)


NVIDIA CORP

NASDAQ:NVDA (5/20/2025, 7:23:04 PM)

After market: 134.21 -0.17 (-0.13%)

134.38

-1.19 (-0.88%)


TESLA INC

NASDAQ:TSLA (5/20/2025, 7:23:07 PM)

After market: 344.48 +0.66 (+0.19%)

343.82

+1.73 (+0.51%)


ARISTA NETWORKS INC

NYSE:ANET (5/20/2025, 7:00:00 PM)

After market: 95.18 -0.49 (-0.51%)

95.67

-1.03 (-1.07%)


PALANTIR TECHNOLOGIES INC-A

NASDAQ:PLTR (5/20/2025, 7:22:26 PM)

After market: 125.47 -0.12 (-0.1%)

125.59

-0.74 (-0.59%)


VISTRA CORP

NYSE:VST (5/20/2025, 7:19:55 PM)

After market: 156.9 -0.13 (-0.08%)

157.03

-0.29 (-0.18%)



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