Supply breakdown
Shares as of Oct 26, 2026| Category | Shares | % | Value | Status |
|---|---|---|---|---|
| Circulating | 229.56M | 100.0% | $221.53B | Estimated |
| Free float | - | - | - | Unavailable |
| Insider-held, unrestricted | - | - | - | Unavailable |
| Locked team funds | 0 | 0.0% | $0 | Unavailable |
| Other restricted | 0 | 0.0% | $0 | Unavailable |
| Total outstanding | 229.56M | 100.0% | $221.53B | Verified |
| Ownership views (overlap the categories above, never added) | ||||
| Institutional holdings (13F) | 187.75M | 81.8% | $181.17B | Estimated |
| Insider-held, all (Forms 3, 4, 5) | - | - | - | Unavailable |
Institutional and insider holdings can include both tradable and locked shares, so they are shown for reference and never added to the total. Check: circulating + locked team + other restricted = total outstanding reconciles.
Valuation
- Traditional$221.53B
- Fully diluted$225.39B
- Circulating$221.53B
- Free float-
- Locked team value$0
- Other restricted value$0
Locked and restricted shares
Not reviewed yet.
Institutional holders
| Holder | Shares | % of total |
|---|---|---|
| BlackRock, Inc. | 15.17M | 6.61% |
| VANGUARD CAPITAL MANAGEMENT LLC | 14.63M | 6.37% |
| STATE STREET CORP | 9.91M | 4.32% |
| FMR LLC | 8.15M | 3.55% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 8.00M | 3.48% |
| Invesco Ltd. | 7.54M | 3.28% |
| WCM INVESTMENT MANAGEMENT, LLC | 5.32M | 2.32% |
| JPMORGAN CHASE & CO | 5.20M | 2.27% |
| GEODE CAPITAL MANAGEMENT, LLC | 5.16M | 2.25% |
| MORGAN STANLEY | 4.72M | 2.06% |
Insiders
Forms 3, 4 and 5Form 4 aggregation pending
Share classes
| Class | Listing | Shares outstanding | As of |
|---|---|---|---|
| Ordinary shares | STX on Nasdaq | 229,561,109 | Oct 26, 2026 |
Notes and sources
- Seagate Technology Holdings plc 10-Q for period ended 2026-10-02, Cover page (0001137789-26-000309)
- SEC public float (non-affiliates): $65.00B as of Dec 27, 2024, from the 10-K cover. It is a dollar value at a past date, not circulating supply.