Samsung Earnings Spark Semiconductor Selloff; Big Tech Stocks Rally in July

According to StockTwits analysis, Samsung's blowout second-quarter earnings—showing revenue more than doubling and profit rising nearly 19-fold—triggered a sharp selloff in semiconductor and memory stocks globally in early July. The reaction signals that investors believe the chip rally, particularly in memory, has peaked, with most of the growth already priced in.

Meanwhile, Big Tech names staged a rebound. Apple gained over 8% in July alone, exceeding its first-half performance, while Nvidia posted its best single-day gain in a month on Wednesday. Among the "Magnificent Seven," Microsoft and Nvidia stand out as most compelling, trading at forward P/E ratios of 20.7x and 20.5x respectively, with analyst upside projections of 40% and 48%.