3 institutions reported holding $1.5M of McDermott International Ltd (MCDIF) in SEC 13F filings for 2026-06-30. Largest institutional holders: Mink Brook Asset Management LLC ($1.0M), Pinnacle Holdings, LLC ($523,383), Potomac Capital Management, Inc. ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Mink Brook Asset Management LLC | $1.0M | 46,530 | Hold |
| 2 | Pinnacle Holdings, LLC | $523,383 | 23,790 | New |
| 3 | Potomac Capital Management, Inc. | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30