Mplx Lp (MPLX) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

1,019,491,525Shares Outstanding

6,044,828Shares held by institutions

$346,670,886Value of institutional holdings

15.02%Institutional ownership %

-16.07%Shares Changed QoQ

586No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

The institutional landscape for Mplx Lp (NYSE:MPLX) includes 586 filers as of the latest reporting cycle ending December 2025.

Institutional ownership in Mplx edged down to 15.0% in December 2025, compared to 20.4% in September 2025.
The company experienced a -16.07% quarterly change in institutional shares held, alongside an increase of 13.79% in total owners annually.
The latest 13F cycle for Mplx reveals that of 586 total investors, 299 funds grew their exposure, whereas 127 reduced theirs and 160 made no changes.
Collectively, institutional investors decreased their stake in Mplx to 153.11Mn shares as of December 2025, a change that is down by 29.32Mn shares quarter on quarter and down 59.49Mn shares year over year.
With 15.71Mn shares, Blackstone Inc. commands the largest institutional position in Mplx as of December 31, 2025, equating to 1.54% of the company.
Among the most significant buyers of Mplx during December 2025 were Blackstone Inc. (1.69Mn), MORGAN STANLEY (1.10Mn), CITADEL ADVISORS LLC (236.46K), Jefferies Financial Group Inc. (233.63K), OPAL CAPITAL LLC (219.79K).
Leading sellers of Mplx stock in December 2025 included ALPS ADVISORS INC (25.98Mn), WESTWOOD HOLDINGS GROUP INC (2.20Mn), ING GROEP NV (1.40Mn), JPMORGAN CHASE & CO (1.37Mn), NATIXIS (949.80K).
The top 10 institutional holders of Mplx for the quarter ending December 2025 included Blackstone Inc. (15.71Mn), TORTOISE CAPITAL ADVISORS, L.L.C. (13.32Mn), GOLDMAN SACHS GROUP INC (12.46Mn), BANK OF AMERICA CORP /DE/ (8.53Mn), KAYNE ANDERSON CAPITAL ADVISORS LP (7.23Mn), MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. (6.91Mn), MORGAN STANLEY (5.76Mn), UBS Group AG (5.30Mn), Energy Income Partners, LLC (5.30Mn), Brave Warrior Advisors, LLC (4.47Mn).

586 Institutional Holders

6,044,828 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
Blackstone Inc.	31 Dec, 2025	15,705,485	1,687,768	12.04%	$838,201,734.00
TORTOISE CAPITAL ADVISORS, L.L.C.	31 Dec, 2025	13,319,918	-200,561	-1.48%	$710,884,024.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	12,461,655	-634,574	-4.85%	$665,078,536.00
BANK OF AMERICA CORP /DE/	31 Dec, 2025	8,531,066	-814,876	-8.72%	$455,302,994.00
KAYNE ANDERSON CAPITAL ADVISORS LP	31 Dec, 2025	7,227,400	-6,367	-0.09%	$385,726,338.00
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	31 Dec, 2025	6,908,382	-151,642	-2.15%	$368,700,347.00
MORGAN STANLEY	31 Dec, 2025	5,763,110	1,104,510	23.71%	$307,577,192.00
UBS Group AG	31 Dec, 2025	5,304,746	38,283	0.73%	$283,114,294.00
Energy Income Partners, LLC	31 Dec, 2025	5,299,724	-360,161	-6.36%	$282,846,270.00
Brave Warrior Advisors, LLC	31 Dec, 2025	4,474,115	6,641	0.15%	$238,783,518.00
JPMORGAN CHASE & CO	31 Dec, 2025	3,286,142	-1,372,119	-29.46%	$175,381,398.00
BROOKFIELD Corp /ON/	31 Dec, 2025	2,959,830	134,859	4.77%	$157,966,145.00
ING GROEP NV	31 Dec, 2025	2,903,800	-1,400,500	-32.54%	$154,975,806.00
CIBC Private Wealth Group LLC	31 Dec, 2025	2,724,200	36,110	1.34%	$145,390,554.00
Clearbridge Investments, LLC	31 Dec, 2025	2,343,689	172,000	7.92%	$125,082,682.00
MILLER HOWARD INVESTMENTS INC /NY	31 Dec, 2025	2,315,921	57,247	2.53%	$123,600,719.00
Fractal Investments LLC	31 Dec, 2025	2,051,301	0	0.00%	$109,477,934.00
EAGLE GLOBAL ADVISORS LLC	31 Dec, 2025	1,884,585	-52,470	-2.71%	$100,580,301.00
CUSHING ASSET MANAGEMENT, LP dba NXG INVESTMENT MANAGEMENT	31 Dec, 2025	1,883,800	150,000	8.65%	$100,538,406.00
DUFF & PHELPS INVESTMENT MANAGEMENT CO	31 Dec, 2025	1,832,003	-5,476	-0.30%	$97,774,000.00

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