Mattern Capital Management’s MPLX MPLX Stock Holding History

Mattern Capital Management’s Portfolio MPLX Stock Details MPLX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$242K	Hold	4,300	–	–	0.03%	159
2026 Q1	$245K	Hold	4,300	–	–	0.03%	157
2025 Q4	$229K	Hold	4,300	–	–	0.03%	164
2025 Q3	$215K	Hold	4,300	–	–	0.03%	169
2025 Q2	$221K	Hold	4,300	–	–	0.03%	165
2025 Q1	$230K	Hold	4,300	–	–	0.03%	161
2024 Q4	$206K	Buy	+4,300	New	+$200K	0.03%	159

Other funds holding MPLX

ALPS Advisors Denver, Colorado $21.3B AUM 23.41% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Blackstone Inc New York $32.9B AUM 23.66% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

TCA

Tortoise Capital Advisors Overland Park, Kansas $9.84B AUM 26.47% 1-Year Est. Return

Mirae Asset Global ETFs Holdings Causeway Bay, Hong Kong $83.9B AUM 60.43% 1-Year Est. Return

KACA

Kayne Anderson Capital Advisors Los Angeles, California $5.1B AUM 17.16% 1-Year Est. Return

EIP

Energy Income Partners Westport, Connecticut $6.36B AUM 17.8% 1-Year Est. Return

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Mattern Capital Management's MPLX Position: Q2 2026 in Review

Mattern Capital Management held its MPLX (MPLX) position steady in Q2 2026 at 4,300 shares worth $242K. The position accounts for 0.03% of the portfolio, ranked #159.

Mattern Capital Management first reported a position in MPLX in Q4 2024 and has held it in 7 quarters since. The position peaked at $245K in Q1 2026. 638 funds tracked by Wall St. Rank hold MPLX as of Q2 2026.

Mattern Capital Management held 4,300 shares of MPLX worth $242K as of Q2 2026.
Mattern Capital Management left its MPLX share count unchanged in Q2 2026.
MPLX made up 0.03% of Mattern Capital Management's portfolio in Q2 2026, its #159 holding.
Mattern Capital Management first reported a position in MPLX in Q4 2024 and has held it in 7 quarters since.
Mattern Capital Management's MPLX position peaked at $245K in Q1 2026.
638 funds tracked by Wall St. Rank held MPLX as of Q2 2026.

Based on Mattern Capital Management's 13F filing for Q2 2026, filed 24 Jul 2026.