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

By Mill Chart

Last update: May 19, 2025

Stay updated with the movements of the S&P500 index one hour before the close of the markets on Monday. Discover which stocks are leading as top gainers and losers in today's session.

Today's top gainers

TickerChangeComment
UNH6.92%Investors celebrated as UNITEDHEALTH GROUP INC (NYSE:UNH) experienced a 6.92% rise in its shares, closing at $312.11 during Monday's session. A press release (UNITEDHEALTH GROUP INCORPORATED (NYSE: UNH) SHAREHOLDER ALERT Bernstein Liebhard LLP Reminds UnitedHealth Group Incorporated Investors of Upcoming Deadline) was released yesterday.
MRNA6.11%MODERNA INC's (NASDAQ:MRNA) stock price displayed strong growth, advancing 6.11% and reaching $26.38 during Monday's session. In the last 3 months the share price dropped with 24.64%.
DG4.63%DOLLAR GENERAL CORP's (NYSE:DG) shares rose 4.63% to $97.88 during Monday's session. In the last 3 months the share price increased with 28.93%.
GEV3.96%GE VERNOVA INC's (NYSE:GEV) stock price increased by 3.96% to $445.0. Shareholders saw the stock price going 32.3% higher in the past month.
HUM3.58%Exciting news for HUMANA INC (NYSE:HUM) as its stock price surged 3.58% to $246.49 during Monday's session. Shareholders saw the stock price going 33.19% lower is the past year.
TTWO3.05%Investors celebrated as TAKE-TWO INTERACTIVE SOFTWRE (NASDAQ:TTWO) experienced a 3.05% rise in its shares, closing at $233.65 during Monday's session. In the last 6 months the stock gained 27.65%.
GILD2.79%GILEAD SCIENCES INC (NASDAQ:GILD) experienced a significant 2.79% increase, reaching $105.36 during Monday's session. The stock is trading 51.36% higher than a year ago.
NI2.26%Investors celebrated as NISOURCE INC (NYSE:NI) experienced a 2.26% rise in its shares, closing at $39.97 during Monday's session. In the last year the share price increased with 33.7%.
BIIB2.25%BIOGEN INC's (NASDAQ:BIIB) shares rose 2.25% to $128.42 during Monday's session. In the last 6 months the share price dropped with 21.5%.
AZO2.17%AUTOZONE INC's (NYSE:AZO) shares rose 2.17% to $3.87K during Monday's session. Shareholders saw the stock price going 21.85% higher is the past 6 months.

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

Losers

TickerChangeComment
FSLR-9.57%During Monday's session, FIRST SOLAR INC's (NASDAQ:FSLR) shares took a tumble, falling 9.57% to $161.38. In the last month the share price increased with 39.44%.
ENPH-4.5%Investors witnessed a 4.5% drop in ENPHASE ENERGY INC's (NASDAQ:ENPH) stock price, which closed at $48.13 during Monday's session. In the last 3 months the share price dropped with 21.18%.
AES-4.34%AES CORP's (NYSE:AES) shares fell 4.34% to $11.68 during Monday's session. In the last 3 months the share price increased with 22.96%.
CZR-4.12%CAESARS ENTERTAINMENT INC's (NASDAQ:CZR) stock price is declining with 4.12% to a price of $29.43. Shareholders saw the stock price going 20.34% higher in the past month.
BBY-3.52%Investors witnessed a 3.52% drop in BEST BUY CO INC's (NYSE:BBY) stock price, which closed at $71.2 during Monday's session. BBY is releasing earnings today. In the last 6 months the stock lost 20.35%.
ON-2.92%ON SEMICONDUCTOR's (NASDAQ:ON) stock price is declining with 2.92% to a price of $43.61. In the last month the stock gained 29.68%.
BLDR-2.87%There was a notable decline in BUILDERS FIRSTSOURCE INC's (NYSE:BLDR) shares, as they dropped 2.87% to $117.18 during Monday's session. In the last 3 months the stock lost 21.61%.
TSLA-2.75%The market experienced a 2.75% downturn in TESLA INC's (NASDAQ:TSLA) stock price, closing at $340.36 during Monday's session. The stock is trading 45.0% higher than a month ago.
MPWR-2.71%The market experienced a downward movement in MONOLITHIC POWER SYSTEMS INC's (NASDAQ:MPWR) stock price, closing at $696.0 with a 2.71% decrease during Monday's session. In the last month the stock gained 36.64%.
PSX-2.64%The market experienced a downward movement in PHILLIPS 66's (NYSE:PSX) stock price, closing at $121.24 with a 2.64% decrease during Monday's session. In the last month the stock gained 26.87%.

For the full top loser list go to our top losers page.

BIOGEN INC

NASDAQ:BIIB (12/19/2025, 8:00:01 PM)

After market: 176.23 +1.43 (+0.82%)

174.8

+4.89 (+2.88%)


GILEAD SCIENCES INC

NASDAQ:GILD (12/19/2025, 8:00:01 PM)

After market: 124.777 +0.49 (+0.39%)

124.29

+2.82 (+2.32%)


HUMANA INC

NYSE:HUM (12/19/2025, 8:04:00 PM)

After market: 262.6 +3.2 (+1.23%)

259.4

-1.27 (-0.49%)


UNITEDHEALTH GROUP INC

NYSE:UNH (12/19/2025, 8:19:51 PM)

After market: 326.8 -0.62 (-0.19%)

327.42

-0.72 (-0.22%)


AUTOZONE INC

NYSE:AZO (12/19/2025, 8:04:00 PM)

After market: 3392.34 0 (0%)

3392.34

-34.27 (-1%)


BEST BUY CO INC

NYSE:BBY (12/19/2025, 8:04:00 PM)

After market: 71.83 0 (0%)

71.83

+0.07 (+0.1%)


BUILDERS FIRSTSOURCE INC

NYSE:BLDR (12/19/2025, 8:04:00 PM)

After market: 103.95 +0.16 (+0.15%)

103.79

-1.83 (-1.73%)


TAKE-TWO INTERACTIVE SOFTWRE

NASDAQ:TTWO (12/19/2025, 8:19:26 PM)

After market: 247.68 +0.28 (+0.11%)

247.4

+0.75 (+0.3%)


FIRST SOLAR INC

NASDAQ:FSLR (12/19/2025, 8:00:00 PM)

After market: 267.24 +0.26 (+0.1%)

266.98

+5.19 (+1.98%)


MONOLITHIC POWER SYSTEMS INC

NASDAQ:MPWR (12/19/2025, 8:03:53 PM)

After market: 937.11 0 (0%)

937.11

+7.63 (+0.82%)


NISOURCE INC

NYSE:NI (12/19/2025, 8:05:52 PM)

After market: 40.91 -0.06 (-0.15%)

40.97

-0.54 (-1.3%)


AES CORP

NYSE:AES (12/19/2025, 8:27:16 PM)

After market: 13.5701 +0.04 (+0.3%)

13.53

-0.15 (-1.1%)


DOLLAR GENERAL CORP

NYSE:DG (12/19/2025, 8:04:00 PM)

After market: 136.96 -0.32 (-0.23%)

137.28

+0.6 (+0.44%)


TESLA INC

NASDAQ:TSLA (12/19/2025, 8:19:17 PM)

After market: 482.65 +1.45 (+0.3%)

481.2

-2.17 (-0.45%)


CAESARS ENTERTAINMENT INC

NASDAQ:CZR (12/19/2025, 8:00:01 PM)

After market: 24.5 +0.12 (+0.49%)

24.38

+0.4 (+1.67%)


ENPHASE ENERGY INC

NASDAQ:ENPH (12/19/2025, 8:00:02 PM)

After market: 33.36 +0.11 (+0.33%)

33.25

+0.29 (+0.88%)


PHILLIPS 66

NYSE:PSX (12/19/2025, 8:11:05 PM)

After market: 129.8 +0.91 (+0.71%)

128.89

-0.24 (-0.19%)


ON SEMICONDUCTOR

NASDAQ:ON (12/19/2025, 8:08:37 PM)

After market: 55.46 +0.25 (+0.45%)

55.21

+0.87 (+1.6%)


MODERNA INC

NASDAQ:MRNA (12/19/2025, 8:03:58 PM)

After market: 33.5 -0.3 (-0.89%)

33.8

+2.85 (+9.21%)


GE VERNOVA INC

NYSE:GEV (12/19/2025, 8:04:00 PM)

After market: 661 +2.72 (+0.41%)

658.28

+18.85 (+2.95%)



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