MPLX — Mplx LP Institutional Holders · Q3 2026
Who owns Mplx LP (MPLX)? 25 institutions reported holding $339.75M in SEC 13F filings for Q3 2026 (period ended 2026-09-30). Largest holders: Chickasaw Capital Management LLC ($293.6M), Private Capital Advisors, Inc. ($14.7M), Adams Asset Advisors, LLC ($12.5M).
Source: SEC Form 13F filings · as of 2026-09-30