DRAM is trading at $49.47, up 5.59%, as memory stocks rally on reports of Samsung and SK Hynix upgrading China plants for advanced NAND chips. - Reuters says the upgrades target AI demand and competition with a growing Chinese rival; these are sector, not DRAM-specific, developments. - The update cites AI data-center demand, positive premarket sentiment and tighter memory supply expected through 2028. The ETF holds memory-chip companies including Samsung and SK Hynix; no separate DRAM-specific catalyst was identified.