A throwaway line from a CEO rarely moves an entire sector in a single afternoon. Dave Mosley managed it on Monday.

Speaking at the JPMorgan Global Technology, Media and Communications Conference, as reported by Benzinga, the Seagate Technology (STX) chief was asked a simple question: would the company build new factories to chase soaring AI storage demand?

His answer rattled the room. New plants “would just take too long,” he said, and could leave Seagate with more capacity than it needs.

That single comment dragged down the whole memory group, pulling Micron (MU), Western Digital (WDC), and SanDisk (SNDK) lower with it.

It leaves the stock with one debate it cannot dodge, and a high-stakes earnings report waiting just…