Roundhill Memory ETF (DRAM) surged 6.61% in pre-market trading, extending a powerful rally in the memory chip sector as investors reacted to blowout quarterly results from Samsung Electronics and a forecast of a prolonged supply crunch for DRAM chips.

The surge was driven by Samsung Electronics' second-quarter earnings beat, with revenue soaring 130% year-over-year and operating profit surging over 18-fold, exceeding market expectations. The company projected that the global memory chip shortage will persist through 2028 and announced plans to lock in 60% to 70% of its DRAM and NAND production capacity through long-term contracts. This bullish outlook, fueled by robust AI-related demand for memory chips, reignited confidence across the sector.

Additional support came from a broader semiconductor rebound, as Microsoft's strong earnings and AI infrastructure spending restored investor appetite for memory stocks. The positive sentiment was further bolstered by analyst calls highlighting structural improvements in the memory industry and limited near-term threats from Chinese competitors.