On February 13th (US time), the US storage sector experienced a volatile correction, with most core stocks plunging intraday before recovering slightly to close lower overall. Micron Technology (MU) led the decline, closing down over 5%. Despite previous market concerns that it was not yet on Nvidia's core HBM4 supplier list, Micron executives publicly refuted this, stating that HBM4 has been certified and is shipping. Western Digital, Seagate, and SanDisk also saw slight declines. Pure Storage and NetApp bucked the trend, rising approximately 4.3%, becoming bright spots in the sector. This volatility was mainly due to initial market disagreements regarding HBM4 orders and profit-taking at previous highs in the sector.