3 institutions reported holding $225,881 of OIL STS INTL INC (OIS) in SEC 13F filings for 2026-06-30. Largest institutional holders: Assenagon Asset Management S.A. ($202,877), GAMMA Investing LLC ($15,499), Versant Capital Management, Inc ($7,505). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Assenagon Asset Management S.A. | $202,877 | 25,328 | Trimmed |
| 2 | GAMMA Investing LLC | $15,499 | 1,935 | Trimmed |
| 3 | Versant Capital Management, Inc | $7,505 | 937 | Hold |
Source: SEC Form 13F filings · as of 2026-06-30