The healthcare sector is trading higher, largely influenced by significant stock-specific news from major insurers. Humana (HUM) surged over 15% after reporting a substantial improvement in its 2027 Medicare Advantage Star Ratings, with 93% of its members now in 4-star or higher plans. This positive development for a key industry player is a primary driver for the sector's outperformance. Conversely, CVS Health (CVS) experienced a decline of around 3% following a setback in its own Medicare Advantage ratings, highlighting a significant divergence in performance within the managed care sub-sector.