Oil States International, Inc. (OIS) ownership: Top institutional holder: BlackRock Fund Advisors ($128.48M). Insider activity: Net Seller (5 buys, 15 sells). SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| BlackRock Fund Advisors | 3294248.00 | $128.48M | 2016-12-31 |
| BlackRock, Inc. | 6309631.00 | $73.44M | 2026-03-31 |
| DIMENSIONAL FUND ADVISORS LP | 3522143.00 | $41.00M | 2026-03-31 |
| VANGUARD GROUP INC | 4480163.00 | $30.33M | 2025-12-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2417559.00 | $28.14M | 2026-03-31 |
| ACADIAN ASSET MANAGEMENT LLC | 2352385.00 | $27.37M | 2026-03-31 |
| D. E. Shaw & Co., Inc. | 2167272.00 | $25.23M | 2026-03-31 |
| First Eagle Investment Management, LLC | 2043709.00 | $23.79M | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-05-12 | |
| Sell | null | 2026-05-12 | |
| Sell | null | 2026-05-12 | |
| Sell | null | 2026-05-12 | |
| Sell | null | 2026-05-12 | |
| Sell | null | 2026-05-12 | |
| Sell | null | 2026-05-01 | |
| Sell | null | 2026-05-01 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.