What's going on in today's session: S&P500 movers

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 (1/22/2026, 8:24:55 PM)

After market: 173.8 0 (0%)

173.8

+1.18 (+0.68%)


GILEAD SCIENCES INC

NASDAQ:GILD (1/22/2026, 8:00:01 PM)

Premarket: 131 -0.14 (-0.11%)

131.14

+2.03 (+1.57%)


HUMANA INC

NYSE:HUM (1/22/2026, 8:04:00 PM)

Premarket: 266.3 0.01 (0%)

266.29

-4.38 (-1.62%)


UNITEDHEALTH GROUP INC

NYSE:UNH (1/22/2026, 8:08:18 PM)

Premarket: 353.41 -1.06 (-0.3%)

354.47

+6.72 (+1.93%)


AUTOZONE INC

NYSE:AZO (1/22/2026, 8:23:41 PM)

After market: 3698.64 0.01 (0%)

3698.63

+26.95 (+0.73%)


BEST BUY CO INC

NYSE:BBY (1/22/2026, 8:24:05 PM)

After market: 67.06 0 (0%)

67.06

+0.5 (+0.75%)


BUILDERS FIRSTSOURCE INC

NYSE:BLDR (1/22/2026, 8:25:15 PM)

Premarket: 124.5 -0.75 (-0.6%)

125.25

-1.57 (-1.24%)


TAKE-TWO INTERACTIVE SOFTWRE

NASDAQ:TTWO (1/22/2026, 8:07:39 PM)

After market: 241.22 +0.12 (+0.05%)

241.1

+2.87 (+1.2%)


FIRST SOLAR INC

NASDAQ:FSLR (1/22/2026, 8:00:00 PM)

Premarket: 243.48 +3.8 (+1.59%)

239.68

-4.04 (-1.66%)


MONOLITHIC POWER SYSTEMS INC

NASDAQ:MPWR (1/22/2026, 8:00:01 PM)

Premarket: 1081.62 +4.95 (+0.46%)

1076.67

+1.74 (+0.16%)


NISOURCE INC

NYSE:NI (1/22/2026, 8:04:00 PM)

After market: 43.52 0 (0%)

43.52

-0.27 (-0.62%)


AES CORP

NYSE:AES (1/22/2026, 8:20:39 PM)

Premarket: 14.61 0 (0%)

14.61

+0.37 (+2.6%)


DOLLAR GENERAL CORP

NYSE:DG (1/22/2026, 8:04:00 PM)

Premarket: 144.182 -0.42 (-0.29%)

144.6

-2.56 (-1.74%)


TESLA INC

NASDAQ:TSLA (1/22/2026, 8:07:24 PM)

Premarket: 449.57 +0.21 (+0.05%)

449.36

+17.92 (+4.15%)


CAESARS ENTERTAINMENT INC

NASDAQ:CZR (1/22/2026, 8:00:01 PM)

After market: 23.61 0 (0%)

23.61

+0.08 (+0.34%)


ENPHASE ENERGY INC

NASDAQ:ENPH (1/22/2026, 8:00:02 PM)

Premarket: 40.5003 +0.02 (+0.05%)

40.48

+4.51 (+12.54%)


PHILLIPS 66

NYSE:PSX (1/22/2026, 8:04:00 PM)

Premarket: 142.25 +0.32 (+0.23%)

141.93

+0.29 (+0.2%)


ON SEMICONDUCTOR

NASDAQ:ON (1/22/2026, 8:00:02 PM)

Premarket: 63.1 +0.03 (+0.05%)

63.07

-0.06 (-0.1%)


MODERNA INC

NASDAQ:MRNA (1/22/2026, 8:00:01 PM)

Premarket: 50.4203 -1.45 (-2.79%)

51.87

+2.06 (+4.14%)


GE VERNOVA INC

NYSE:GEV (1/22/2026, 8:04:00 PM)

Premarket: 661.49 -0.18 (-0.03%)

661.67

-6.22 (-0.93%)



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