01:50 PM EDT, 08/11/2025 (MT Newswires) -- Health care stocks increased Monday afternoon, with the NYSE Health Care Index up 0.1% and the Health Care Select Sector SPDR Fund (XLV) fractionally higher.

The iShares Biotechnology ETF (IBB) was shedding 0.5%.

In corporate news, Avantor ( AVTR ) said Monday that its board remains committed to driving growth, expanding margins and creating sustained shareholder value in response to activist investor Engine Capital's call to explore options, including a sale or restructuring. Avantor ( AVTR ) shares climbed 5.3%.

RadNet ( RDNT ) shares jumped nearly 20% after it posted improved Q2 results that topped analysts' estimates.

Tiziana Life Sciences ( TLSA ) shares gained past 9% after it said Monday the US Food & Drug Administration approved an investigational new drug application for a phase 2a trial of intranasal foralumab in people with multiple system atrophy.

Owens & Minor ( OMI ) shares fell 34% after its Q2 earnings and full-year adjusted earnings guidance fell short of analyst expectations.