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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 (12/15/2025, 8:07:52 PM)

After market: 175.74 0 (0%)

175.74

+1.64 (+0.94%)


GILEAD SCIENCES INC

NASDAQ:GILD (12/15/2025, 8:00:02 PM)

After market: 120.14 +0.36 (+0.3%)

119.78

-0.62 (-0.51%)


HUMANA INC

NYSE:HUM (12/15/2025, 8:04:00 PM)

After market: 274.517 -0.22 (-0.08%)

274.74

+6.29 (+2.34%)


UNITEDHEALTH GROUP INC

NYSE:UNH (12/15/2025, 8:04:00 PM)

After market: 339.56 -1.54 (-0.45%)

341.1

-0.74 (-0.22%)


AUTOZONE INC

NYSE:AZO (12/15/2025, 8:06:41 PM)

After market: 3488.71 0 (0%)

3488.71

+43 (+1.25%)


BEST BUY CO INC

NYSE:BBY (12/15/2025, 8:07:03 PM)

After market: 72.889 0 (0%)

72.89

-0.57 (-0.78%)


BUILDERS FIRSTSOURCE INC

NYSE:BLDR (12/15/2025, 8:08:09 PM)

After market: 104 -0.66 (-0.63%)

104.66

-3.82 (-3.52%)


TAKE-TWO INTERACTIVE SOFTWRE

NASDAQ:TTWO (12/15/2025, 9:25:39 PM)

After market: 244.56 0 (0%)

244.56

+3.09 (+1.28%)


FIRST SOLAR INC

NASDAQ:FSLR (12/15/2025, 8:00:00 PM)

After market: 255.89 0 (0%)

255.89

+1.09 (+0.43%)


MONOLITHIC POWER SYSTEMS INC

NASDAQ:MPWR (12/15/2025, 8:00:02 PM)

After market: 949.098 -0.3 (-0.03%)

949.4

+2.89 (+0.31%)


NISOURCE INC

NYSE:NI (12/15/2025, 8:04:00 PM)

After market: 42.0267 +0.2 (+0.47%)

41.83

+0.42 (+1.01%)


AES CORP

NYSE:AES (12/15/2025, 8:04:00 PM)

After market: 13.7999 -0.06 (-0.43%)

13.86

+0.03 (+0.22%)


DOLLAR GENERAL CORP

NYSE:DG (12/15/2025, 8:22:54 PM)

After market: 132.8 -0.13 (-0.1%)

132.93

-0.28 (-0.21%)


TESLA INC

NASDAQ:TSLA (12/15/2025, 8:00:02 PM)

After market: 471.61 -3.7 (-0.78%)

475.31

+16.35 (+3.56%)


CAESARS ENTERTAINMENT INC

NASDAQ:CZR (12/15/2025, 8:19:54 PM)

After market: 24.01 0 (0%)

24.01

-0.52 (-2.12%)


ENPHASE ENERGY INC

NASDAQ:ENPH (12/15/2025, 8:25:55 PM)

After market: 31.2 -0.17 (-0.54%)

31.37

-0.81 (-2.52%)


PHILLIPS 66

NYSE:PSX (12/15/2025, 8:04:00 PM)

After market: 139.51 -2 (-1.41%)

141.51

+0.07 (+0.05%)


ON SEMICONDUCTOR

NASDAQ:ON (12/15/2025, 8:00:03 PM)

After market: 55.09 0 (0%)

55.09

+0.13 (+0.24%)


MODERNA INC

NASDAQ:MRNA (12/15/2025, 8:00:02 PM)

After market: 29.95 +0.03 (+0.1%)

29.92

+0.46 (+1.56%)


GE VERNOVA INC

NYSE:GEV (12/15/2025, 8:04:00 PM)

After market: 677 -4.35 (-0.64%)

681.35

+9.64 (+1.44%)



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