WILLIAM JOHN SEMPOLINSKI’s MPLX MPLX Stock Holding History

WILLIAM JOHN SEMPOLINSKI’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	$299K	Buy	+5,301	New	+$296K	0.12%	91

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 23.58% 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

WILLIAM JOHN SEMPOLINSKI's MPLX Position: Q2 2026 in Review

WILLIAM JOHN SEMPOLINSKI opened a new position in MPLX (MPLX) in Q2 2026: 5,301 shares worth $299K. The stake represents 0.12% of the portfolio and ranks #91 among its holdings.

610 funds tracked by Wall St. Rank hold MPLX as of Q2 2026.

WILLIAM JOHN SEMPOLINSKI held 5,301 shares of MPLX worth $299K as of Q2 2026.
MPLX was a new WILLIAM JOHN SEMPOLINSKI position in Q2 2026.
MPLX made up 0.12% of WILLIAM JOHN SEMPOLINSKI's portfolio in Q2 2026, its #91 holding.
610 funds tracked by Wall St. Rank held MPLX as of Q2 2026.

Based on WILLIAM JOHN SEMPOLINSKI's 13F filing for Q2 2026, filed 14 Aug 2026.