Tech companies lead list of double-digit gains in June for stocks in the S&P 500 - MarketWatch
1. S&P 500 up 1.5%, semiconductor stocks surged by double digits. 2. Micron (MU) is favored by investors due to positive DRAM pricing. 3. Nvidia's upcoming chips likely to increase demand for Micron's memory products. 4. Micron's performance driven by optimism for its late June earnings. 5. AMD's AI chip launch increases competitive landscape for memory suppliers.