Seagate Technology is trading at $607.38, down 5.41%, as HDD supply concerns and broader technology weakness weigh on sentiment. - Seagate Technology fell 7.86% during the October 22 regular session; no clear company-specific announcement was identified. - A report says Toshiba plans to nearly double HDD production capacity by fiscal 2027, raising industry supply concerns. - Reuters tied Thursday’s tech selloff to AI-spending concerns and rising oil prices.