Who owns OIL STATES INTERNATIONAL, INC?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of OIS from SEC Form 13F filings across 200 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 200 institutions disclosed 53.5M shares of OIL STATES INTERNATIONAL, INC worth $428.5M — about 91.4% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.
200
13F holders
$428.5M
value, 2026 filers
91.4%
of shares outstanding (53.5M sh)
26
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of OIS's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 6.8M | $54.6M | 0.0% | 11.7% | +8.1% |
| 2 | DIMENSIONAL FUND ADVISORS LP | 3.0M | $24.1M | 0.0% | 5.1% | -14.6% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 2.4M | $19.4M | 0.0% | 4.1% | 0.0% |
| 4 | AMERICAN CENTURY COMPANIES INC | 2.2M | $17.7M | 0.0% | 3.8% | +19.7% |
| 5 | ACADIAN ASSET MANAGEMENT LLC | 2.0M | $16.4M | 0.0% | 3.5% | -13.2% |
| 6 | D. E. Shaw & Co., Inc. | 2.0M | $16.2M | 0.0% | 3.5% | -6.9% |
| 7 | First Eagle Investment Management, LLC | 2.0M | $16.1M | 0.0% | 3.4% | -1.9% |
| 8 | STATE STREET CORP | 2.0M | $15.9M | 0.0% | 3.4% | +14.3% |
| 9 | AQR CAPITAL MANAGEMENT LLC | 1.7M | $13.9M | 0.0% | 3% | -4.8% |
| 10 | VANGUARD PORTFOLIO MANAGEMENT LLC | 1.6M | $13.0M | 0.0% | 2.8% | -0.7% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 1.4M | $11.6M | 0.0% | 2.5% | +6.5% |
| 12 | TWO SIGMA INVESTMENTS, LP | 1.4M | $11.6M | 0.0% | 2.5% | +34.6% |
| 13 | KENNEDY CAPITAL MANAGEMENT LLC | 1.3M | $10.3M | 0.2% | 2.2% | +19.7% |
| 14 | MORGAN STANLEY | 1.2M | $9.7M | 0.0% | 2.1% | -10.7% |
| 15 | Qube Research & Technologies Ltd | 1.1M | $9.0M | 0.0% | 1.9% | +465.4% |
| 16 | HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 1.1M | $8.8M | 0.0% | 1.9% | +9.9% |
| 17 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 1.1M | $8.7M | 0.0% | 1.9% | -4.2% |
| 18 | BRIDGEWAY CAPITAL MANAGEMENT, LLC | 840,237 | $6.7M | 0.1% | 1.4% | +0.9% |
| 19 | ALGERT GLOBAL LLC | 813,971 | $6.5M | 0.1% | 1.4% | +5628.2% |
| 20 | MILLENNIUM MANAGEMENT LLC | 667,842 | $5.3M | 0.0% | 1.1% | -5.2% |
| 21 | FEDERATED HERMES, INC. | 651,708 | $5.2M | 0.0% | 1.1% | +57.4% |
| 22 | PANAGORA ASSET MANAGEMENT INC | 650,275 | $5.2M | 0.0% | 1.1% | +20.4% |
| 23 | UBS Group AG | 646,012 | $5.2M | 0.0% | 1.1% | -24.3% |
| 24 | Trexquant Investment LP | 602,932 | $4.8M | 0.0% | 1% | +9.4% |
| 25 | FMR LLC | 558,454 | $4.5M | 0.0% | 1% | +109.5% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.