Seagate Technology Holdings plc (STX) Institutional Ownership

Ownership Summary

Seagate Technology Holdings plc (NASDAQ:STX) currently has 555 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

• The collective stake of institutional investors in Seagate Technology Holdings moved to 18.0% in December 2025, a shift down from the 91.1% reported for September 2025.
• Institutional share ownership changed by 7.84% QoQ, while the number of institutional owners saw a decrease of 30.19% YoY.
• A review of institutional activity for Seagate Technology Holdings shows 288 of 555 filers increasing their positions, while 178 reduced their stake, and 89 remained unchanged.
• The total number of shares held by institutions in Seagate Technology Holdings increased to 40.63Mn as of December 2025, a net change of up by 2.95Mn shares quarter on quarter, and down 151.95Mn shares year over year.
• As of December 31, 2025, VANGUARD GROUP INC held Seagate Technology Holdings's largest shareholding position with over 28.12Mn shares, representing 12.45% of total outstanding shares.
• Among the most significant buyers of Seagate Technology Holdings during December 2025 were MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (1.88Mn), Swedbank AB (377.63K), Artemis Investment Management LLP (284.43K), SG Americas Securities, LLC (212.41K), WT Asset Management Ltd (116.20K).
• Leading sellers of Seagate Technology Holdings stock in December 2025 included UBS Group AG (252.06K), TD Waterhouse Canada Inc. (134.06K), Swiss Life Asset Management Ltd (133.71K), WEDGE CAPITAL MANAGEMENT L L P/NC (111.73K), WOLVERINE ASSET MANAGEMENT LLC (54.95K).
• The top 10 institutional holders of Seagate Technology Holdings for the quarter ending December 2025 included VANGUARD GROUP INC (28.12Mn), MASSACHUSETTS FINANCIAL SERVICES CO /MA/ (2.01Mn), UBS Group AG (690.83K), KBC Group NV (638.61K), CACTI ASSET MANAGEMENT LLC (530.40K), Sumitomo Mitsui Trust Group, Inc. (518.81K), Artemis Investment Management LLP (493.48K), Mitsubishi UFJ Asset Management Co., Ltd. (477.66K), Swedbank AB (423.21K), PRINCIPAL FINANCIAL GROUP INC (242.90K).