# Seagate, Western Digital stocks sink as rival Toshiba's expansion plans hit storage highfliers

> **Newsylist Open Intelligence Dossier** · First detected: 2026-10-02 18:29 UTC · Category: Business · Sources: 3 · Current Velocity: 1.73

## Key People, Organizations & Locations
Western, Digital, Seagate, Toshiba

## Multi-Source Evidence Table
| Source Outlet | Headline | Published (UTC) | Verification URL |
|---|---|---|---|
| Seeking Alpha | Seagate, Western Digital plunge amid report that Toshiba aims to boost hard disk drive supply (STX:NASDAQ) | 2026-10-02 14:32 | [Source Link](https://news.google.com/rss/articles/CBMixwFBVV95cUxQNTFrY2Q5eVRHVWxrUVE4Q0lTQlZzT0dzbDRQcHFPQ01yQmk3eVFheGpENU5CWktOMEs1YTA3M0JqckVBbUstRzZlV1dKbm1EcU5VZEh1REltVi1CUm1SZHhEZXlwS2ZWUjRQQi16SmFKWURfbncxRlNhMm5ocWF1QkVpLS1VRDlrOWxMWGpUZTUyMWNoRXR5b0lPQjM5Q1BuMHpJTTRQLWZacEVWYWRnWlNxR0RqVm1kZWVYR0xocGtiN3dmT0JZ?oc=5) |
| Nikkei Asia | Toshiba to double hard disk drive supply to fill AI chip memory gap | 2026-10-02 14:32 | [Source Link](https://news.google.com/rss/articles/CBMisgFBVV95cUxPSGZuZkd1OGZzSWMwVmVJWW45a2E0RzctYW9uUldyckZEb1haU2FLdko4VWFFZHgybWtzdzJMZ0Y4SVl2VWJFY1ZyNXFwOXpEV1VsUmZxaklmMk1KdDJhbXBpWGdmVE5IbTJZUWUzbU5DSm5aYVF1OGNIWFB3WXlMSGdNb0pJUmdSbGFWQk9DVnhyaFl4Q1FOc0p3aDFFRmxoX3JldjBPRHVtX05TbmZnOWV3?oc=5) |
| Yahoo Finance | Seagate, Western Digital stocks sink as rival Toshiba's expansion plans hit storage highfliers | 2026-10-02 14:32 | [Source Link](https://news.google.com/rss/articles/CBMi4wFBVV95cUxON1ZBd2ZNdGJPSS03ZXpqN1JaZ0FKVWpBUGZmbnR0Y2VLOXNiUXpwMXp6SERjYlZOYVBvYTNpeFRmd3R5S3RYQU1JQ29HVUJaY1Z0M1ptMnF0UDdQbWhLbVd3OV9jWlZ3cmlnVmF0dGJKc29pSnJIdVhibF9McW5ObWRLNnVSLXpTTEo4SmFhVXJ1aXdyT2dHVGpwSVJKVHhjQ041V0dUUUhPMldIZ2hCeU9rRW5rcENNcWlmVnQ1Ujd2ZmtMUWlicTgwblNTeUJseDFUOEZOUWxhRnNpWXNWRjdFdw?oc=5) |
| Yahoo Finance | Seagate and Western Digital shares fall on Toshiba HDD expansion | 2026-10-02 12:18 | [Source Link](https://news.google.com/rss/articles/CBMiogFBVV95cUxNVkh6RjFtUjROQUpMMnc3djZzdG4yWjl6V2tjX2RHLTZTalBoaUJuVW5oTEFneHNMZXN6dEhlMnJ2NFhWOFNlZVU4YlNRaGI0U3VQU1kwa1hKSEtvLWppRnRCOW1JMzRzVFZ1a1l0czhEeFpQbUFza2cxVi1IbnRuTGp6WTMyTDNxdURLQ3l2SndORWo4a0FqWm1weWZLdWJmWlE?oc=5) |

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*Canonical Source: https://www.newsylist.com/trend/2026-10-02/seagate-western-digital-stocks-sink-as-rival-toshiba-s-expansion-plans-hit*
*Synthesized by Newsylist Open Intelligence Engine under E-E-A-T journalistic standards.*