Micron Stock Plunges 13% on Friday After SemiAnalysis Report, But Huang Confirms HBM4 Certification

According to SemiAnalysis, Micron's stock price plunged 13% on Friday, June 5, marking its steepest single-day decline since April 2025, closing at $864.01. The selloff followed a report claiming Nvidia reduced next-generation server memory capacity in Vera Rubin from 55TB to 28TB. However, the same day, Nvidia CEO Jensen Huang publicly announced that Micron achieved HBM4 certification alongside SK Hynix and Samsung—a major recognition that analysts had previously questioned Micron could attain.

Industry experts noted that the report conflated two distinct product categories: modular memory (SOCAMM DRAM) and high-bandwidth memory (HBM), the primary driver of AI server demand. According to Barron's and Trendforce analysts, Nvidia's reduction in standard memory capacity likely reflects the "crowding out effect" of HBM production, as each unit of HBM requires approximately three times the wafer capacity of standard memory. Trendforce predicted this displacement will intensify through 2027, supporting higher HBM pricing.