"Nvidia's Stock Surge Drives Tech Gains, Pushes S&P 500 Higher"

Nvidia, Micron Technology, Steel Dynamics, Teledyne Technologies, and Monolithic Power are the top gainers in the S&P 500 index. Nvidia stock rose 7.1% and Morgan Stanley recommended buying it. Micron Technology rebounded above the 50-day line, while Steel Dynamics moved back above its 50-day and 200-day lines. Teledyne Technologies is trying to break a four-month downtrend, and Monolithic Power is approaching its 50-day line. U.S. Steel is considering strategic alternatives after receiving unsolicited bids, and Esmark bid $35 a share for the company.