STX, WDC Stocks Sink On Toshiba’s Reported Plan To Double AI Hard-Disk Capacity: Analysts Call The Drop Overdone
Seagate (STX) and Western Digital (WDC) shares fell 12% and 11% respectively after Toshiba announced plans to double AI hard-disk capacity. Analysts at Morgan Stanley, Rosenblatt, and Citi maintained positive ratings, arguing the drop was overdone and Toshiba's plan unlikely to close the supply gap or affect pricing power. Toshiba plans a 60 billion yen investment in Philippines facilities to increase production by fiscal 2027.
How this was made

The 30-second read
Why it matters
Analyst commentary suggests the price drop is an overreaction; buy ratings remain unchanged, implying a potential rebound.
Market read
The news triggered double‑digit declines in Seagate and Western Digital, but analyst consensus remains bullish, creating a short‑term buying opportunity.
What to watch
Component constraints for Toshiba may limit actual capacity gains, reducing the long‑term impact on Seagate and Western Digital.
Background
Toshiba announced a 60 billion‑yen investment in the Philippines to double AI‑focused HDD capacity by FY2027, prompting a sell‑off in the two U.S. HDD leaders.
Ticker impact
Seagate shares fell 12% after news of Toshiba's plan to double AI HDD capacity, but analysts say the drop is overdone and recommend buying the dip.
likely upward pressure as traders buy the dip on Seagate.
Analyst ratings remain positive and Morgan Stanley explicitly said it would gladly buy the stock on the dip.
Western Digital dropped 11% on the same Toshiba capacity news, with multiple banks maintaining buy ratings and calling the move excessive.
likely upward pressure as investors purchase Western Digital on the dip.
Rosenblatt and Citi keep buy ratings, indicating confidence the price decline is temporary.
Market effects
The HDD sector may see short‑term price support for peers as analysts view the supply‑increase news as limited.
Asian HDD capacity expansion could modestly affect global storage pricing dynamics.
Large‑cap HDD makers remain in focus for AI data‑center investors worldwide.
Counterpoint
If Toshiba's capacity boost materializes faster than expected, the supply gap could close, pressuring HDD prices.
Key entities
- CompanyToshiba
Japanese manufacturer planning to double AI HDD capacity.
- AnalystMorgan Stanley
Maintains Overweight rating and would buy the dip.
- AnalystRosenblatt
Calls the expansion a credible medium‑term risk but keeps Buy rating.
- AnalystCiti
Highlights structural limits on Toshiba's plan.


