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Shares of Western Digital and Seagate bounced back after analysts said concerns over competitive threats from Toshiba's hard-drive capacity expansion were overstated, noting Toshiba would need significant additional investment to challenge the two leaders' scale. The rebound follows a period of pressure on storage stocks tied to competitive worries. The commentary reinforces confidence in the duopoly-like structure of the hard-drive market even as AI-driven data storage demand grows.