Wall Street Mixed: S&P 500 Nears Record, AI Stocks Boost Nasdaq

• U.S. stocks traded mixed with the S&P 500 up 0.5% nearing its record, while the Nasdaq composite gained 1% driven by AI stocks.
• Japan's Nikkei 225 surged 3.9% to a record high following a parliamentary election, boosting hopes for economic reforms.
• Concerns persist on Wall Street regarding high stock valuations and whether AI investments will yield sufficient profits.
• Nvidia and Broadcom saw significant gains, up 3.4% and 4% respectively, acting as key drivers for the S&P 500.
• Kroger climbed 6.3% on new CEO appointment; Transocean rose 2.8% after acquiring Valaris, which surged 29%; Hims & Hers dropped 24.5% due to a lawsuit from Novo Nordisk.