4 institutions reported holding $866,027 of SUBSEA 7 SA (SUBCY) in SEC 13F filings for 2026-03-31. Largest institutional holders: O'Brien Greene & Co. Inc ($660,832), RHUMBLINE ADVISERS ($125,401), GAMMA Investing LLC ($70,530), Golden State Equity Partners ($9,264). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | O'Brien Greene & Co. Inc | $660,832 | 21,400 | Hold |
| 2 | RHUMBLINE ADVISERS | $125,401 | 4,061 | Trimmed |
| 3 | GAMMA Investing LLC | $70,530 | 2,284 | Hold |
| 4 | Golden State Equity Partners | $9,264 | 300 | New |
Source: SEC Form 13F filings · as of 2026-03-31