Samsung HBM4 Yield Gains Could Loosen SK hynix's Lead

Samsung's HBM4 ramp is becoming a more important variable for the AI memory supply picture. DigiTimes reports that Samsung Electronics' yield for sixth-generation high-bandwidth memory has approached 80%, marking a material improvement since mass production began. For RamTrend, the key implication is supply elasticity. Higher yields mean more saleable HBM4 from the same wafer starts and a better cost base, both of which can help Samsung compete against SK hynix as the market moves into the next HBM generation. The report does not by itself prove a near-term price decline, but it reduces the risk that HBM4 remains constrained by a single leading supplier.