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 (3/4/2026, 8:10:19 PM)

After market: 189.94 0 (0%)

189.94

+5.92 (+3.22%)


GILEAD SCIENCES INC

NASDAQ:GILD (3/4/2026, 8:00:01 PM)

After market: 148.22 0 (0%)

148.22

+0.39 (+0.26%)


HUMANA INC

NYSE:HUM (3/4/2026, 8:04:00 PM)

After market: 183.43 +0.32 (+0.17%)

183.11

+1.53 (+0.84%)


UNITEDHEALTH GROUP INC

NYSE:UNH (3/4/2026, 8:04:00 PM)

After market: 291.709 -0.25 (-0.09%)

291.96

+2.75 (+0.95%)


AUTOZONE INC

NYSE:AZO (3/4/2026, 8:09:32 PM)

After market: 3717 0 (0%)

3717

+79.83 (+2.19%)


BEST BUY CO INC

NYSE:BBY (3/4/2026, 8:09:47 PM)

After market: 67.41 +0.02 (+0.03%)

67.39

+1.44 (+2.18%)


BUILDERS FIRSTSOURCE INC

NYSE:BLDR (3/4/2026, 8:10:31 PM)

After market: 96.45 +0.46 (+0.48%)

95.99

-1.46 (-1.5%)


TAKE-TWO INTERACTIVE SOFTWRE

NASDAQ:TTWO (3/4/2026, 8:00:01 PM)

After market: 215.5 -0.27 (-0.13%)

215.77

-1.28 (-0.59%)


FIRST SOLAR INC

NASDAQ:FSLR (3/4/2026, 8:28:57 PM)

After market: 198 +0.73 (+0.37%)

197.27

-0.26 (-0.13%)


MONOLITHIC POWER SYSTEMS INC

NASDAQ:MPWR (3/4/2026, 8:00:01 PM)

After market: 1099.02 0 (0%)

1099.02

+24.65 (+2.29%)


NISOURCE INC

NYSE:NI (3/4/2026, 8:04:00 PM)

After market: 47.55 -0.01 (-0.02%)

47.56

+0.82 (+1.75%)


AES CORP

NYSE:AES (3/4/2026, 8:07:36 PM)

After market: 14.25 -0.04 (-0.28%)

14.29

+0.11 (+0.78%)


DOLLAR GENERAL CORP

NYSE:DG (3/4/2026, 8:19:59 PM)

After market: 150.153 -1.45 (-0.95%)

151.6

-1.44 (-0.94%)


TESLA INC

NASDAQ:TSLA (3/4/2026, 8:00:01 PM)

After market: 406.74 +0.8 (+0.2%)

405.94

+13.51 (+3.44%)


CAESARS ENTERTAINMENT INC

NASDAQ:CZR (3/4/2026, 8:18:03 PM)

After market: 25.55 -0.01 (-0.04%)

25.56

+0.54 (+2.16%)


ENPHASE ENERGY INC

NASDAQ:ENPH (3/4/2026, 8:21:56 PM)

After market: 42.7178 +0.06 (+0.14%)

42.66

-0.54 (-1.25%)


PHILLIPS 66

NYSE:PSX (3/4/2026, 8:04:00 PM)

After market: 164.72 0 (0%)

164.72

+4.94 (+3.09%)


ON SEMICONDUCTOR

NASDAQ:ON (3/4/2026, 8:00:03 PM)

After market: 62.6065 +0.08 (+0.12%)

62.53

-0.89 (-1.4%)


MODERNA INC

NASDAQ:MRNA (3/4/2026, 8:00:01 PM)

After market: 57.85 +0.05 (+0.09%)

57.8

+7.97 (+15.99%)


GE VERNOVA INC

NYSE:GEV (3/4/2026, 8:04:00 PM)

After market: 843.5 +2.23 (+0.27%)

841.27

-0.73 (-0.09%)



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