Today's biggest winners and losers in the stock market, a look at the notable movers:
On this episode of Stock Movers:

- HCA Healthcare (HCA) slumped on Tuesday after cutting its guidance for the year, pointing to the fact more patients are struggling to access health insurance on Obamacare exchanges. The hospital operator expects adjusted earnings to fall between $28.70 and $30.50 a share for the year, a decrease of 70 cents a share at the midpoint, according to a statement. HCA also released preliminary earnings for the second quarter ahead of schedule. Healthcare providers are grappling with shifting payment trends as the expiration of some Affordable Care Act subsidies prompted millions of people to drop coverage this year. More changes loom, with cuts and new eligibility rules for Medicaid taking effect next year.

- Education technology company Stride (LRN) shares dipped as much as 7.7% after Anthropic announced the launch of Claude for Teachers, giving verified K-12 educators in the US free access to premium Claude capabilities.

-Yum Brands (YUM) shares are down as much as 4.5%, which would be the worst single-session since Aug. 5, 2025, as the Washington Post reports that federal and state health officials are investigating whether Yum’s Taco Bell restaurants played a role in the recent US outbreak of a gastrointestinal illness caused by a parasite that contaminates fresh produce.