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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 (1/5/2026, 8:10:16 PM)

After market: 174.63 0 (0%)

174.63

-3.19 (-1.79%)


GILEAD SCIENCES INC

NASDAQ:GILD (1/5/2026, 8:00:00 PM)

After market: 117.9 -0.4 (-0.34%)

118.3

-3.3 (-2.71%)


HUMANA INC

NYSE:HUM (1/5/2026, 8:04:00 PM)

After market: 270.46 -5.34 (-1.94%)

275.8

+11.32 (+4.28%)


UNITEDHEALTH GROUP INC

NYSE:UNH (1/5/2026, 8:04:00 PM)

After market: 341.94 -0.08 (-0.02%)

342.02

+5.62 (+1.67%)


AUTOZONE INC

NYSE:AZO (1/5/2026, 8:09:04 PM)

After market: 3268.3 0 (0%)

3268.3

-35.52 (-1.08%)


BEST BUY CO INC

NYSE:BBY (1/5/2026, 8:09:26 PM)

After market: 70.04 -0.01 (-0.01%)

70.05

+0.87 (+1.26%)


BUILDERS FIRSTSOURCE INC

NYSE:BLDR (1/5/2026, 8:10:34 PM)

After market: 108.2 -0.24 (-0.22%)

108.44

+3.81 (+3.64%)


TAKE-TWO INTERACTIVE SOFTWRE

NASDAQ:TTWO (1/5/2026, 8:00:02 PM)

After market: 256.926 -0.38 (-0.15%)

257.31

+5.71 (+2.27%)


FIRST SOLAR INC

NASDAQ:FSLR (1/5/2026, 8:00:00 PM)

After market: 271.55 -0.45 (-0.17%)

272

-2.34 (-0.85%)


MONOLITHIC POWER SYSTEMS INC

NASDAQ:MPWR (1/5/2026, 9:04:12 PM)

After market: 955.03 0 (0%)

955.03

+18.72 (+2%)


NISOURCE INC

NYSE:NI (1/5/2026, 8:04:00 PM)

After market: 41.57 0 (0%)

41.57

-0.59 (-1.4%)


AES CORP

NYSE:AES (1/5/2026, 8:06:04 PM)

After market: 14.75 +0.02 (+0.14%)

14.73

-0.09 (-0.61%)


DOLLAR GENERAL CORP

NYSE:DG (1/5/2026, 8:25:23 PM)

After market: 138.71 -0.22 (-0.16%)

138.93

+2.11 (+1.54%)


TESLA INC

NASDAQ:TSLA (1/5/2026, 8:00:02 PM)

After market: 451.05 -0.62 (-0.14%)

451.67

+13.6 (+3.1%)


CAESARS ENTERTAINMENT INC

NASDAQ:CZR (1/5/2026, 8:22:22 PM)

After market: 23.92 +0.06 (+0.25%)

23.86

+0.3 (+1.27%)


ENPHASE ENERGY INC

NASDAQ:ENPH (1/5/2026, 8:00:02 PM)

After market: 34.11 +0.11 (+0.32%)

34

+0.25 (+0.74%)


PHILLIPS 66

NYSE:PSX (1/5/2026, 8:04:00 PM)

After market: 138.73 -1.25 (-0.89%)

139.98

+9.41 (+7.21%)


ON SEMICONDUCTOR

NASDAQ:ON (1/5/2026, 9:11:32 PM)

After market: 59.49 +0.8 (+1.36%)

58.69

+1.99 (+3.51%)


MODERNA INC

NASDAQ:MRNA (1/5/2026, 8:00:00 PM)

After market: 32.14 -0.03 (-0.09%)

32.17

+1.31 (+4.24%)


GE VERNOVA INC

NYSE:GEV (1/5/2026, 8:04:00 PM)

After market: 679 -1.86 (-0.27%)

680.86

+1.31 (+0.19%)



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