Stay informed with the top movers within the S&P500 index on Tuesday.

Last update: May 13, 2025

Let's delve into the developments on the US markets in the middle of the day on Tuesday. Below, you'll find the top gainers and losers within the S&P500 index during today's session.

Today's top gainers

Ticker	Change	Comment
FSLR	18.74%	FIRST SOLAR INC's (NASDAQ:FSLR) stock price is advancing with 18.74% to a price of $185.49. The stock is trading 24.05% higher than a month ago.
SMCI	14.23%	SUPER MICRO COMPUTER INC's (NASDAQ:SMCI) shares soared 14.23% to $38.29 during Tuesday's session. The stock is trading 30.04% lower than 3 months ago.
PLTR	7.8%	PALANTIR TECHNOLOGIES INC-A's (NASDAQ:PLTR) stock price is advancing with 7.8% to a price of $127.7. The stock is trading 33.78% higher than a month ago.
VST	6.23%	VISTRA CORP (NYSE:VST) experienced a significant 6.23% increase, reaching $155.19 during Tuesday's session. Shareholders saw the stock price going 30.78% higher in the past month.
GEV	5.97%	Investors celebrated as GE VERNOVA INC (NYSE:GEV) experienced a 5.97% rise in its shares, closing at $441.51 during Tuesday's session. In the last month the share price increased with 29.62%.
BLDR	5.85%	Positive market sentiment drove BUILDERS FIRSTSOURCE INC's (NYSE:BLDR) stock price up by 5.85% to $124.89 during Tuesday's session. The stock is trading 23.33% lower than 3 months ago.
NVDA	5.63%	NVIDIA CORP (NASDAQ:NVDA) experienced a significant 5.63% increase, reaching $129.93 during Tuesday's session. The stock is trading 33.0% higher than a year ago.
AES	5.05%	AES CORP (NYSE:AES) witnessed a notable 5.05% uptick in its shares, reaching $12.47 during Tuesday's session. Shareholders saw the stock price going 44.22% lower is the past year.
PSX	5.0%	In an impressive move, PHILLIPS 66's (NYSE:PSX) shares recorded a 5.0% increase, closing at $124.61 during Tuesday's session. A press release (Phillips 66 Issues Statement Following Glass Lewis and ISS Reports) was released earlier today.
WDC	4.94%	WESTERN DIGITAL CORP's (NASDAQ:WDC) stock price displayed strong growth, advancing 4.94% and reaching $48.87 during Tuesday's session. A press release (Western Digital Authorizes New $2.0 Billion Share Repurchase Program) was released earlier today.

For the full top gainers list go to our top gainers page.

Losers

Ticker	Change	Comment
UNH	-15.64%	UNITEDHEALTH GROUP INC's (NYSE:UNH) stock price faced a 15.64% decline, reaching $319.5 during Tuesday's session. Earlier today the company had a press release: INVESTOR ALERT: Pomerantz Law Firm Reminds Investors with Losses on their Investment in UnitedHealth Group Incorporated of Class Action Lawsuit and Upcoming Deadlines - UNH.
ENPH	-7.3%	ENPHASE ENERGY INC's (NASDAQ:ENPH) shares fell 7.3% to $44.44. In the last 3 months the stock lost 25.02%.
ELV	-6.76%	There was a downturn in ELEVANCE HEALTH INC's (NYSE:ELV) shares, as they experienced a 6.76% decline, closing at $388.51 during Tuesday's session. In the last year the stock lost 23.92%.
HUM	-6.64%	Investors witnessed a 6.64% drop in HUMANA INC's (NYSE:HUM) stock price, which closed at $236.06 during Tuesday's session. The stock is trading 29.01% lower than a year ago.
CNC	-4.76%	The market experienced a downward movement in CENTENE CORP's (NYSE:CNC) stock price, closing at $59.88 with a 4.76% decrease during Tuesday's session.
CVS	-4.57%	CVS HEALTH CORP's (NYSE:CVS) stock price decreased by 4.57% to $61.85. In the last 6 months the stock gained 21.85%.
SPG	-4.27%	SIMON PROPERTY GROUP INC's (NYSE:SPG) stock price decreased by 4.27% to $164.13.
MRK	-3.73%	During Tuesday's session, MERCK & CO. INC.'s (NYSE:MRK) shares took a tumble, falling 3.73% to $77.43. Earlier today the company had a press release: Research on Novel Treatment Approaches and Scientific Advances From Merck’s Broad and Differentiated Oncology Portfolio and Pipeline to be Presented at ASCO 2025.
MOH	-3.6%	MOLINA HEALTHCARE INC's (NYSE:MOH) shares fell 3.6% to $315.89 during Tuesday's session. In the last 3 months the stock gained 20.35%.
CI	-3.52%	Investors witnessed a 3.52% decrease in THE CIGNA GROUP's (NYSE:CI) stock price, which closed at $304.63 during Tuesday's session.

Our top losers page will show you the full list.