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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 (8/22/2025, 8:04:00 PM)

After market: 307.35 -0.07 (-0.02%)

307.42

+4.07 (+1.34%)


NETAPP INC

NASDAQ:NTAP (8/22/2025, 8:27:38 PM)

After market: 110.52 0 (0%)

110.52

+2.74 (+2.55%)


SUPER MICRO COMPUTER INC

NASDAQ:SMCI (8/22/2025, 8:00:02 PM)

After market: 44.05 +0.17 (+0.39%)

43.88

+1.57 (+3.71%)


ADVANCED MICRO DEVICES

NASDAQ:AMD (8/22/2025, 8:00:00 PM)

After market: 168.36 +0.6 (+0.36%)

167.76

+4.05 (+2.47%)


NVIDIA CORP

NASDAQ:NVDA (8/22/2025, 8:27:46 PM)

After market: 178.38 +0.39 (+0.22%)

177.99

+3.01 (+1.72%)


TESLA INC

NASDAQ:TSLA (8/22/2025, 8:00:02 PM)

After market: 341.45 +1.44 (+0.42%)

340.01

+19.9 (+6.22%)


ARISTA NETWORKS INC

NYSE:ANET (8/22/2025, 8:04:00 PM)

After market: 133.736 +0.49 (+0.36%)

133.25

+1.22 (+0.92%)


PALANTIR TECHNOLOGIES INC-A

NASDAQ:PLTR (8/22/2025, 10:26:46 PM)

After market: 159.68 +0.94 (+0.59%)

158.74

+2.56 (+1.64%)


VISTRA CORP

NYSE:VST (8/22/2025, 8:04:00 PM)

After market: 191 +0.54 (+0.28%)

190.46

+0.18 (+0.09%)



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