Mplx Lp (MPLX) Institutional Ownership

Ownership Summary

Recent 13F filings as of December 2025 show that 28 institutional investors hold a position in Mplx Lp (NYSE:MPLX).

• Mplx Lp saw its institutional ownership percentage fell to 0.1% in December 2025 from 20.4% in September 2025.
• In percentage terms, this reflects as a holdings change of 7.09% quarter on quarter, and a decrease of 94.56% year over year.
• Of these 28 institutional investors, 14 increased their holdings in Mplx Lp, while 4 of them reduced positions, and 10 investors maintained their exposure.
• The total number of shares held by institutions in Mplx Lp increased to 1.09Mn as of December 2025, a net change of up by 72.26K shares quarter on quarter, and down 211.51Mn shares year over year.
• The top institutional stake in Mplx Lp as of December 31, 2025 belongs to Northside Capital Management, LLC, which owns 590.08K shares, or 0.06% of the company.
• Among the most significant buyers of Mplx Lp during December 2025 were Clear Trail Advisors, LLC (30.03K), Diversified Trust Co (12.48K), CWA Asset Management Group, LLC (11.58K), SG Americas Securities, LLC (8.23K), PARK AVENUE SECURITIES LLC (4.45K).
• Leading sellers of Mplx Lp stock in December 2025 included SANDERS MORRIS HARRIS LLC (3.16K), First Heartland Consultants, Inc. (1.89K), Addis & Hill, Inc (927), SL ADVISORS, LLC (451).
• The top 10 institutional holders of Mplx Lp for the quarter ending December 2025 included Northside Capital Management, LLC (590.08K), WALNUT PRIVATE EQUITY PARTNERS, LLC (257.50K), DOLIVER ADVISORS, LP (42.47K), CWA Asset Management Group, LLC (33.77K), Clear Trail Advisors, LLC (30.03K), SL ADVISORS, LLC (17.23K), Addis & Hill, Inc (12.65K), Diversified Trust Co (12.48K), First Heartland Consultants, Inc. (11.54K), Wedmont Private Capital (11.08K).