Uncover the latest developments among S&P500 stocks in today's session.

Last update: May 19, 2025

Join us in exploring the top gainers and losers within the S&P500 index in the middle of the day on Monday as we examine the latest happenings in today's session.

Gainers

Ticker	Change	Comment
MRNA	7.76%	MODERNA INC's (NASDAQ:MRNA) shares soared 7.76% to $26.79 during Monday's session. Shareholders saw the stock price going 24.64% lower in the past 3 months.
UNH	6.66%	With a 6.66% surge, UNITEDHEALTH GROUP INC's (NYSE:UNH) stock price reached $311.35 during Monday's session, signaling positive momentum. Earlier today the company had a press release: UNITEDHEALTH GROUP INCORPORATED (NYSE: UNH) SHAREHOLDER ALERT Bernstein Liebhard LLP Reminds UnitedHealth Group Incorporated Investors of Upcoming Deadline.
DG	4.55%	In an impressive move, DOLLAR GENERAL CORP's (NYSE:DG) shares recorded a 4.55% increase, closing at $97.81 during Monday's session. Shareholders saw the stock price going 28.93% higher in the past 3 months.
HUM	3.21%	Investors witnessed a remarkable 3.21% rise in HUMANA INC's (NYSE:HUM) shares, which climbed to $245.6 during Monday's session. In the last year the stock lost 33.19%.
TTWO	3.11%	TAKE-TWO INTERACTIVE SOFTWRE's (NASDAQ:TTWO) shares rose 3.11% to $233.79. The stock is trading 27.65% higher than 6 months ago.
GILD	2.65%	GILEAD SCIENCES INC (NASDAQ:GILD) experienced a significant 2.65% increase, reaching $105.22 during Monday's session. The stock is trading 51.36% higher than a year ago.
GEV	2.03%	GE VERNOVA INC's (NYSE:GEV) stock price increased by 2.03% to $436.73. Shareholders saw the stock price going 32.3% higher in the past month.
AZO	1.78%	Exciting news for AUTOZONE INC (NYSE:AZO) as its stock price surged 1.78% to $3.85K during Monday's session. In the last 6 months the share price increased with 21.85%.
NI	1.71%	With a 1.71% surge, NISOURCE INC's (NYSE:NI) stock price reached $39.75 during Monday's session, signaling positive momentum. In the last year the share price increased with 33.7%.
FCX	1.7%	FREEPORT-MCMORAN INC (NYSE:FCX) witnessed a notable 1.7% uptick in its shares, reaching $38.66 during Monday's session. The stock is trading 29.89% lower than a year ago.

To see the full list of top gainers you can use our top gainers page.

Top losers

Ticker	Change	Comment
FSLR	-6.48%	Investors witnessed a 6.48% decrease in FIRST SOLAR INC's (NASDAQ:FSLR) stock price, which closed at $166.9 during Monday's session. The stock is trading 39.44% higher than a month ago.
AES	-4.38%	AES CORP's (NYSE:AES) stock price is declining with 4.38% to a price of $11.68. Shareholders saw the stock price going 22.96% higher in the past 3 months.
TSLA	-3.46%	Investors witnessed a 3.46% drop in TESLA INC's (NASDAQ:TSLA) stock price, which closed at $337.86 during Monday's session. In the last month the share price increased with 45.0%.
PLTR	-3.4%	During Monday's session, PALANTIR TECHNOLOGIES INC-A's (NASDAQ:PLTR) shares took a tumble, falling 3.4% to $125.12. In the last month the stock gained 38.11%.
ENPH	-3.13%	ENPHASE ENERGY INC's (NASDAQ:ENPH) stock price encountered a 3.13% decline, reaching $48.82 during Monday's session. In the last 3 months the stock lost 21.18%.
CZR	-3.0%	Investors witnessed a 3.0% drop in CAESARS ENTERTAINMENT INC's (NASDAQ:CZR) stock price, which closed at $29.78 during Monday's session. The stock is trading 20.34% higher than a month ago.
BBY	-2.52%	During Monday's session, BEST BUY CO INC's (NYSE:BBY) shares took a tumble, falling 2.52% to $71.94. BEST BUY CO INC is releasing earnings today. In the last 6 months the stock lost 20.35%.
AMD	-2.46%	ADVANCED MICRO DEVICES's (NASDAQ:AMD) stock price is declining with 2.46% to a price of $114.29. A press release (AMD Announces Agreement to Divest ZT Systems Data Center Infrastructure Manufacturing Business to Sanmina) was released earlier today.
TPL	-2.45%	TEXAS PACIFIC LAND CORP's (NYSE:TPL) stock price is declining with 2.45% to a price of $1.4K. The stock is trading 134.0% higher than a year ago.
SMCI	-2.44%	The market experienced a downward movement in SUPER MICRO COMPUTER INC's (NASDAQ:SMCI) stock price, closing at $45.02 with a 2.44% decrease during Monday's session. Shareholders saw the stock price going 46.48% higher in the past month.