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 (1/16/2026, 6:58:10 PM)

After market: 165.45 +1.03 (+0.63%)

164.42

-4.15 (-2.46%)


GILEAD SCIENCES INC

NASDAQ:GILD (1/16/2026, 6:48:51 PM)

After market: 124.763 -0.15 (-0.12%)

124.91

+3.65 (+3.01%)


HUMANA INC

NYSE:HUM (1/16/2026, 7:00:00 PM)

After market: 274.5 +1.22 (+0.45%)

273.28

-10.67 (-3.76%)


UNITEDHEALTH GROUP INC

NYSE:UNH (1/16/2026, 7:00:00 PM)

After market: 331.7 +0.68 (+0.21%)

331.02

-7.94 (-2.34%)


AUTOZONE INC

NYSE:AZO (1/16/2026, 7:00:00 PM)

After market: 3523.99 +1.97 (+0.06%)

3522.02

+56.57 (+1.63%)


BEST BUY CO INC

NYSE:BBY (1/16/2026, 7:00:00 PM)

After market: 67.59 -0.17 (-0.25%)

67.76

-0.38 (-0.56%)


BUILDERS FIRSTSOURCE INC

NYSE:BLDR (1/16/2026, 7:00:00 PM)

After market: 126.79 0 (0%)

126.79

-2.17 (-1.68%)


TAKE-TWO INTERACTIVE SOFTWRE

NASDAQ:TTWO (1/16/2026, 6:00:31 PM)

After market: 240.14 0 (0%)

240.14

-4.2 (-1.72%)


FIRST SOLAR INC

NASDAQ:FSLR (1/16/2026, 6:46:35 PM)

After market: 244 +0.27 (+0.11%)

243.73

+0.09 (+0.04%)


MONOLITHIC POWER SYSTEMS INC

NASDAQ:MPWR (1/16/2026, 5:36:11 PM)

After market: 1033.17 0 (0%)

1033.17

+23.63 (+2.34%)


NISOURCE INC

NYSE:NI (1/16/2026, 7:00:00 PM)

After market: 43.7038 -0.23 (-0.51%)

43.93

+0.4 (+0.92%)


AES CORP

NYSE:AES (1/16/2026, 7:00:00 PM)

After market: 14.17 -0.02 (-0.14%)

14.19

-0.25 (-1.73%)


DOLLAR GENERAL CORP

NYSE:DG (1/16/2026, 7:00:00 PM)

After market: 133.39 -15.35 (-10.32%)

148.74

-2.99 (-1.97%)


TESLA INC

NASDAQ:TSLA (1/16/2026, 7:01:51 PM)

After market: 437.49 -0.01 (0%)

437.5

-1.07 (-0.24%)


CAESARS ENTERTAINMENT INC

NASDAQ:CZR (1/16/2026, 6:10:51 PM)

After market: 24.35 0 (0%)

24.35

-1 (-3.94%)


ENPHASE ENERGY INC

NASDAQ:ENPH (1/16/2026, 6:45:33 PM)

After market: 35.3261 +0.35 (+0.99%)

34.98

-0.38 (-1.07%)


PHILLIPS 66

NYSE:PSX (1/16/2026, 7:00:00 PM)

After market: 138.28 0 (0%)

138.28

-1.73 (-1.24%)


ON SEMICONDUCTOR

NASDAQ:ON (1/16/2026, 5:43:32 PM)

After market: 54.9 -5.43 (-9%)

60.33

+0.05 (+0.08%)


MODERNA INC

NASDAQ:MRNA (1/16/2026, 7:01:01 PM)

After market: 41.75 -0.08 (-0.19%)

41.83

+2.47 (+6.28%)


GE VERNOVA INC

NYSE:GEV (1/16/2026, 7:00:00 PM)

After market: 682 +0.45 (+0.07%)

681.55

+39.32 (+6.12%)



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