Let's take a look at the S&P500 stocks that are experiencing unusual volume in today's session.

Last update: May 12, 2025

Unusual volume stocks

Ticker	Change	Comment
MCK	-2.75%	The trading volume of MCKESSON CORP (NYSE:MCK) today is 1.6M shares, which is considered unusual. Shares are falling by 2.75%. Today's trading volume is 47.52% above the average 50-day volume, indicating a significant deviation from the norm.
IQV	4.64%	With 3.66M shares traded so far, IQVIA HOLDINGS INC (NYSE:IQV) is experiencing an unusual level of activity today. Shares are rising by 4.64%. The current trading volume is 85.96% above the average 50-day volume. This indicates a significant deviation from the average trading activity.
LLY	3.55%	ELI LILLY & CO (NYSE:LLY) has an unusual volume of 6.3M shares today. The market is favoring LLY today, as its share price records a notable increase of 3.55%. With an average daily volume of 4.07M over the past 50 days, today's volume is 54.89% above the average, indicating a potential shift in market sentiment.
NRG	24.24%	5.63M shares of NRG ENERGY INC (NYSE:NRG) exchanged hands today. The market is favoring NRG today, as its share price records a notable increase of 24.24%. In comparison to the average daily volume of the last 50 days, the current volume is 84.01% above. This suggests a notable change in trading activity. yesterday the company released their earnings. Earlier today the company had a press release: NRG Energy, Inc. Reports First Quarter 2025 Results and Reaffirms 2025 Financial Guidance.
FSLR	7.41%	FIRST SOLAR INC (NASDAQ:FSLR) has an unusual volume of 4.57M shares. FSLR is advancing 7.41% today. In comparison to the average daily volume of the last 50 days, the current volume is 20.33% above. This suggests a notable change in trading activity.
ZBRA	11.17%	With 1.01M shares traded so far, ZEBRA TECHNOLOGIES CORP-CL A (NASDAQ:ZBRA) is experiencing an unusual level of activity today. ZBRA is advancing 11.17% today. With an average volume of 695.89K over the past 50 days, the current volume is 45.1% above the average. This deviation signals a potential shift in market dynamics. Earlier today the company had a press release: Zebra Technologies Showcases New Intelligent Automation Solutions at Automate 2025.
SWK	14.65%	STANLEY BLACK & DECKER INC's (NYSE:SWK) traded a high volume of 3.84M shares. Shares in SWK are on the rise, with a gain of 14.65% observed in today's trading session. The average daily volume over the past 50 days is 2.95M. Hence, the current volume is 30.3% above the average volume, indicating a deviation from the usual trading pattern.
CI	-6.08%	THE CIGNA GROUP (NYSE:CI) has an unusual volume of 2.11M shares today. The current market conditions have led to a price decrease of 6.08% for CI. Today's trading volume is 20.74% above the average 50-day volume, indicating a significant deviation from the norm.