1 institutions reported holding $3.8M of ALTAGAS LTD (ATGFF) in SEC 13F filings for 2026-03-31. Largest institutional holders: Mn Services Vermogensbeheer B.V. ($3.8M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Mn Services Vermogensbeheer B.V. | $3.8M | 111,156 | Hold |
Source: SEC Form 13F filings · as of 2026-03-31