S&P 500 Gains and Losses Today: UnitedHealth Stock Soars; Fox Corp. Falters as Murdochs Reach Agreement

Market Performance - Major U.S. equities indexes reached record closing highs, with the S&P 500 increasing by 0.3% [2][3][8] - UnitedHealth Group (UNH) was the best-performing stock in the S&P 500, surging 8.6% after a positive forecast regarding Medicare Advantage (MA) plan ratings [4][8] - Other indexes, including the Dow and Nasdaq, also rose by 0.4%, joining the S&P 500 in record territory [3][8] Company Developments - UnitedHealth Group anticipates that 78% of its Medicare Advantage members will be enrolled in plans rated 4 stars or higher, which is crucial for quality bonus payments [4] - Centene (CNC), a competitor in the health insurance sector, saw its shares increase by 7.7% following UnitedHealth's announcement [4] - Coinbase Global (COIN) shares rose by 5.5% after the company hired founders of a crypto-yielding platform to enhance its on-chain consumer strategy [6] Industry News - Nokia (NOK) announced a partnership with Super Micro Computer (SMCI) to develop AI-optimized networking solutions, while Supermicro shares increased by 7.2% [5] - A major lithium producer in China plans to restart production at a previously idle mine, which has renewed pressure on the lithium industry, causing shares of Albemarle (ALB) to drop by 11.5% [10] - Fox Corp. (FOXA) shares fell over 6% after the Murdoch family settled a dispute regarding control of the media empire [11]