UnitedHealth stock plunges, leads insurers lower after Trump Medicare spending plan surprise

Core Viewpoint - The health insurance sector experienced a significant sell-off due to the Trump administration's proposal for a lower-than-expected increase in Medicare Advantage payment rates for 2027, leading to a sharp decline in shares of major insurers like UnitedHealth Group. Group 1: Market Reaction - UnitedHealth Group (UNH) shares fell by more than 19%, while Elevance Health (ELV) and CVS (CVS) each dropped over 12% following the announcement [2] - The proposed payment rate increase for Medicare Advantage plans is only 0.09% for 2027, significantly lower than the anticipated increase of up to 6% [1][4] Group 2: Financial Metrics - UnitedHealth's Medical Care Ratio (MCR) is reported at 89.1%, indicating that the company spends 89 cents of every premium dollar on medical care [2][3] - The MCR is a critical metric for insurers, reflecting the percentage of premium revenue allocated to medical claims and healthcare services [3] Group 3: Industry Impact - UnitedHealth has the largest exposure to Medicare Advantage changes, accounting for approximately 30% of national enrollment, while Humana (HUM) follows with about 17% [3] - The proposed payment changes could lead to benefit cuts and increased costs for 35 million seniors and individuals with disabilities, further straining the Medicare Advantage sector [5] Group 4: Company Performance - UnitedHealth reported fourth quarter revenues of $113.2 million and full-year revenues of $447.6 million, both of which were below market expectations [6] - Despite the revenue shortfall, both fourth quarter and full-year revenues showed a 12% increase compared to the previous year [7]