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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 (9/12/2025, 8:00:01 PM)

After market: 144.86 0 (0%)

144.86

-3.98 (-2.67%)


GILEAD SCIENCES INC

NASDAQ:GILD (9/12/2025, 8:00:01 PM)

After market: 115 +0.45 (+0.39%)

114.55

-3.31 (-2.81%)


HUMANA INC

NYSE:HUM (9/12/2025, 8:04:00 PM)

After market: 276 -0.44 (-0.16%)

276.44

-2.28 (-0.82%)


UNITEDHEALTH GROUP INC

NYSE:UNH (9/12/2025, 8:22:42 PM)

After market: 352.99 +0.48 (+0.14%)

352.51

-1.1 (-0.31%)


AUTOZONE INC

NYSE:AZO (9/12/2025, 10:04:17 PM)

After market: 4322.15 0 (0%)

4322.15

-32.39 (-0.74%)


BEST BUY CO INC

NYSE:BBY (9/12/2025, 8:04:00 PM)

After market: 75.88 +0.01 (+0.01%)

75.87

-2.59 (-3.3%)


BUILDERS FIRSTSOURCE INC

NYSE:BLDR (9/12/2025, 8:04:01 PM)

After market: 143.236 +0.51 (+0.35%)

142.73

-3.83 (-2.61%)


TAKE-TWO INTERACTIVE SOFTWRE

NASDAQ:TTWO (9/12/2025, 8:22:04 PM)

After market: 245 -1.26 (-0.51%)

246.26

-0.28 (-0.11%)


FIRST SOLAR INC

NASDAQ:FSLR (9/12/2025, 8:00:01 PM)

After market: 203 +1.3 (+0.64%)

201.7

-1.61 (-0.79%)


MONOLITHIC POWER SYSTEMS INC

NASDAQ:MPWR (9/12/2025, 8:00:01 PM)

After market: 834.14 0 (0%)

834.14

-6.24 (-0.74%)


NISOURCE INC

NYSE:NI (9/12/2025, 8:04:00 PM)

After market: 41.21 +0.2 (+0.49%)

41.01

-0.12 (-0.29%)


AES CORP

NYSE:AES (9/12/2025, 8:04:00 PM)

After market: 12.86 -0.02 (-0.16%)

12.88

+0.03 (+0.23%)


DOLLAR GENERAL CORP

NYSE:DG (9/12/2025, 8:04:00 PM)

After market: 104.4 0 (0%)

104.4

-0.99 (-0.94%)


TESLA INC

NASDAQ:TSLA (9/12/2025, 9:48:55 PM)

After market: 395.55 -0.39 (-0.1%)

395.94

+27.13 (+7.36%)


CAESARS ENTERTAINMENT INC

NASDAQ:CZR (9/12/2025, 8:00:01 PM)

After market: 25.1245 +0.03 (+0.14%)

25.09

-0.81 (-3.13%)


ENPHASE ENERGY INC

NASDAQ:ENPH (9/12/2025, 8:00:02 PM)

After market: 37.6287 0 (0%)

37.63

+0.31 (+0.83%)


PHILLIPS 66

NYSE:PSX (9/12/2025, 8:09:48 PM)

After market: 130.78 0 (0%)

130.78

-1.74 (-1.31%)


ON SEMICONDUCTOR

NASDAQ:ON (9/12/2025, 8:06:03 PM)

After market: 48.38 +0.12 (+0.25%)

48.26

-0.76 (-1.55%)


MODERNA INC

NASDAQ:MRNA (9/12/2025, 8:00:01 PM)

After market: 23.6485 +0.14 (+0.59%)

23.51

-1.88 (-7.4%)


GE VERNOVA INC

NYSE:GEV (9/12/2025, 8:04:01 PM)

After market: 625.55 0 (0%)

625.55

-8.6 (-1.36%)



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