Seagate Technology Holdings plc (STX) Institutional Ownership

Ownership Summary

Seagate Technology Holdings plc (NASDAQ:STX) appears in 1,423 institutional 13F filings for the quarter ending March 2026.

• Their combined ownership stood at 86.2% of outstanding shares in March 2026, down from 89.7% in December 2025.
• They increased total shares held in Seagate Technology Holdings by 17.04% from the prior quarter, while the number of investors in STX increased 79.22% year over year.
• Among the 1,423 funds, 784 bought more Seagate Technology Holdings shares, 481 sold down, and 158 held their ground.
• Altogether, these fund groups held 186.2Mn shares in STX by March 2026, up by 27.11Mn shares quarter on quarter, and down 21.02Mn shares year over year.
• BlackRock, Inc. leads ownership in STX with 14.27Mn shares as of March 31, 2026, equal to 6.61% of outstanding shares.
• The most significant purchases of STX for the quarter ending March 2026 came from VANGUARD CAPITAL MANAGEMENT LLC (14.16Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (11.09Mn), FMR LLC (4.42Mn), Janus Henderson Group Plc (1.91Mn), NOMURA ASSET MANAGEMENT INTERNATIONAL INC. (1.8Mn).
• Top sellers of STX stock for the quarter ending March 2026 included Sanders Capital, LLC (4.28Mn), Goldman Sachs Group Inc (1.94Mn), BlackRock, Inc. (1.84Mn), DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main (1.8Mn), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (1.76Mn).
• Business Quant data shows the 10 biggest positions in Seagate Technology Holdings as of March 2026 are held by BlackRock, Inc. (14.27Mn), VANGUARD CAPITAL MANAGEMENT LLC (14.16Mn), Sanders Capital, LLC (12.9Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (11.09Mn), State Street Corp (9.32Mn), FMR LLC (8.18Mn), Jpmorgan Chase & Co (6.66Mn), Capital Research Global Investors (5.74Mn), GEODE CAPITAL MANAGEMENT, LLC (5.06Mn), Morgan Stanley (4.76Mn).