Why Is Seagate (STX) Stock Down 9.18% Today, Oct 6? DK Bidding War and Toshiba Expansion Raise HDD Competition Fears

Seagate (STX) sold off on reports it is competing with Toshiba for TDK's HDD magnetic-head business, raising uncertainty around deal valuation, financing needs, and supply-chain control. Separately, Toshiba's plan to nearly double HDD capacity by FY2027 increases perceived medium-term pricing and market-share risk for incumbents. The combined headlines pressured near-term sentiment toward the storage hardware complex, with investors reassessing durability of tight HDD market conditions.