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These S&P500 stocks that are showing activity before the opening bell on Thursday.

By Mill Chart

Last update: May 15, 2025

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

Pre-market losers

TickerChangeComment
UNH-6.73%UNITEDHEALTH GROUP INC's (NYSE:UNH) stock price decreased by 6.73% to $287.29. Yesterday the company had a press release: UNH INVESTOR ALERT: Bronstein, Gewirtz & Grossman LLC Announces That UnitedHealth Group Incorporated Investors With Substantial Losses Have Opportunity to Lead Class Action Lawsuit.
VLO-2.7%VALERO ENERGY CORP's (NYSE:VLO) shares experienced a 2.7% decline, falling to $130.7 during Thursday's pre-market session. In the last month the stock gained 24.89%.
DVN-2.68%DEVON ENERGY CORP's (NYSE:DVN) stock price decreased by 2.68% to $33.05. Shareholders saw the stock price going 31.56% lower is the past year.
FANG-2.67%DIAMONDBACK ENERGY INC's (NASDAQ:FANG) stock price is declining with 2.67% to a price of $140.95. In the last year the stock lost 26.74%.
SMCI-2.56%During Thursday's pre-market session, the shares of SUPER MICRO COMPUTER INC (NASDAQ:SMCI) declined by 2.56%, reaching $43.85. Despite yesterday's 15.71% gain, SMCI experiences a 2.56% decline in today's pre-market session, indicating a shift in market sentiment.
CF-2.41%The pre-market session on Thursday witnessed a 2.41% decrease in CF INDUSTRIES HOLDINGS INC's (NYSE:CF) shares, with the stock price falling to $83.9.
PWR-2.38%QUANTA SERVICES INC's (NYSE:PWR) stock price recorded a 2.38% decrease, falling to $335.0. In the last month the share price increased with 25.68%.
APO-2.35%The pre-market session on Thursday witnessed a 2.35% decrease in APOLLO GLOBAL MANAGEMENT INC's (NYSE:APO) shares, with the stock price falling to $140.84. The stock is trading 27.56% higher than a year ago.
SLB-2.25%Investors observed a 2.25% decline in SCHLUMBERGER LTD's (NYSE:SLB) stock price, which now stands at $35.2 during Thursday's pre-market session. In the last year the stock lost 25.89%.
APA-2.2%APA CORP's (NASDAQ:APA) shares fell 2.2% to $17.77. In the last month the share price increased with 22.03%.

Our premarket losers page will show you the full list.

CF INDUSTRIES HOLDINGS INC

NYSE:CF (11/21/2025, 8:17:14 PM)

After market: 78.54 0 (0%)

78.54

+0.75 (+0.96%)


APA CORP

NASDAQ:APA (11/21/2025, 8:12:08 PM)

After market: 23.74 -0.21 (-0.88%)

23.95

+0.57 (+2.44%)


DEVON ENERGY CORP

NYSE:DVN (11/21/2025, 8:24:01 PM)

After market: 35.81 +0.16 (+0.45%)

35.65

+0.49 (+1.39%)


SLB LTD

NYSE:SLB (11/21/2025, 8:04:00 PM)

After market: 36.4 +0.21 (+0.58%)

36.19

+1 (+2.84%)


VALERO ENERGY CORP

NYSE:VLO (11/21/2025, 8:04:42 PM)

After market: 173.167 -0.28 (-0.16%)

173.45

+2.63 (+1.54%)


UNITEDHEALTH GROUP INC

NYSE:UNH (11/21/2025, 8:04:00 PM)

After market: 320.695 +0.72 (+0.23%)

319.97

+8.43 (+2.71%)


QUANTA SERVICES INC

NYSE:PWR (11/21/2025, 8:04:00 PM)

After market: 434.67 +4.52 (+1.05%)

430.15

+0.37 (+0.09%)


SUPER MICRO COMPUTER INC

NASDAQ:SMCI (11/21/2025, 8:00:28 PM)

After market: 32.4106 +0.22 (+0.69%)

32.19

+0.63 (+2%)


APOLLO GLOBAL MANAGEMENT INC

NYSE:APO (11/21/2025, 8:12:13 PM)

After market: 130.617 +0.6 (+0.46%)

130.02

+3.26 (+2.57%)


DIAMONDBACK ENERGY INC

NASDAQ:FANG (11/21/2025, 8:25:59 PM)

After market: 146.44 0 (0%)

146.44

+0.19 (+0.13%)



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