68 institutions reported holding $417.5M of ENERGY TRANS I PFD PRPTL (ETPRI) in SEC 13F filings for 2026-06-30. Largest institutional holders: GROUP ONE TRADING LLC ($133.4M), SIMPLEX TRADING, LLC ($73.9M), IMC-Chicago, LLC ($65.9M), INFRASTRUCTURE CAPITAL ADVISORS, LLC ($60.2M), KIM, LLC ($23.8M). Source: SEC Form 13F.
Source: SEC Form 13F filings · as of 2026-06-30