Health insurer stocks decline after 2027 Medicare Advantage plan updates

• Shares of major U.S. health insurers declined after companies released 2027 Medicare Advantage (MA) plan designs.
• UnitedHealth Group (NYSE:UNH) and CVS Health’s Aetna announced changes that include tighter provider access measures for some MA plans.
• Analysts cited pressure from Medicare Advantage reimbursement trends and rising medical costs as factors influencing benefit adjustments.

Shares of major U.S. health insurers moved lower after companies including UnitedHealth Group (NYSE:UNH) and CVS Health (NYSE:CVS) subsidiary Aetna announced their Medicare Advantage plan designs for 2027.

UnitedHealth and CVS shares each declined nearly 1%, while Elevance Health (NYSE:ELV) fell about 2% and Humana (NYSE:HUM) declined approximately 1% during the session.

The companies’ 2027 Medicare Advantage updates included changes to plan structures, with UnitedHealthcare and Aetna indicating plans to limit provider access for certain enrolled members in government-backed MA plans serving adults aged 65 and older and people with disabilities.

Humana said it expects to offer Medicare Advantage plans in more than 80% of U.S. counties in 2027, compared with approximately 85% in 2026.

J.P. Morgan analysts noted that insurers are entering the annual enrollment period amid continued pressure from Medicare Advantage reimbursement levels, which they said have not kept pace with medical cost trends.

The analysts said this environment has contributed to benefit adjustments and some market exits as insurers focus on maintaining margins.

The Medicare Advantage annual enrollment period remains a key period for insurers as companies adjust benefits, pricing and geographic availability.