1 institutions reported holding $3.3M of ALTAGAS LTD (ATGFF) in SEC 13F filings for 2026-06-30. Largest institutional holders: Mn Services Vermogensbeheer B.V. ($3.3M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Mn Services Vermogensbeheer B.V. | $3.3M | 90,656 | Trimmed |
Source: SEC Form 13F filings · as of 2026-06-30