Oil States International, Inc (OIS) Institutional Ownership

Ownership Summary

Oil States International, Inc (NYSE:OIS) showed up in the 13F filings of 176 institutional investors as of December 2025.

• These investors collectively held 88.7% of Oil States International's outstanding shares in December 2025, down from 94.0% in September 2025.
• Their total shares held in OIS decreased -4.68% quarter over quarter, and separately, investors owning Oil States International increased 18.12% from a year ago.
• Of these 176 funds, 87 grew their exposure to Oil States International, 66 cut back, and 23 maintained positions.
• The aggregate institutional position in Oil States International amounted to 51.44Mn shares as of December 2025, down by 2.53Mn shares quarter on quarter, and up 335.04K shares year over year.
• As of December 31, 2025, BlackRock, Inc. held the largest stake in Oil States International with 6.31Mn shares, accounting for 10.88% of total shares outstanding.
• The largest buyers of Oil States International for the quarter ending December 2025 were VANGUARD CAPITAL MANAGEMENT LLC (2.42Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (1.64Mn), First Eagle Investment Management, LLC (1.51Mn), DRIEHAUS CAPITAL MANAGEMENT LLC (1.33Mn), MARSHALL WACE, LLP (932.77K).
• The largest sales of OIS for the quarter ending December 2025 came from GENDELL JEFFREY L (1.27Mn), HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC (702.85K), D. E. Shaw & Co., Inc. (481.84K), KENNEDY CAPITAL MANAGEMENT LLC (374.14K), BlackRock, Inc. (348.18K).
• Per Business Quant data, the top 10 holders of Oil States International for the quarter ending December 2025 are BlackRock, Inc. (6.31Mn), First Eagle Investment Management, LLC (4.09Mn), DIMENSIONAL FUND ADVISORS LP (3.52Mn), VANGUARD CAPITAL MANAGEMENT LLC (2.42Mn), ACADIAN ASSET MANAGEMENT LLC (2.35Mn), D. E. Shaw & Co., Inc. (2.17Mn), AMERICAN CENTURY COMPANIES INC (1.85Mn), AQR CAPITAL MANAGEMENT LLC (1.82Mn), State Street Corp (1.73Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (1.64Mn).