Castleark Management’s MPLX MPLX Stock Holding History

Castleark 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	$1.81M	Sell	32,092 -9,800	-23%	-$547K	0.05%	213
2026 Q1	$2.39M	Sell	41,892 -11,220	-21%	-$636K	0.08%	194
2025 Q4	$2.83M	Sell	53,112 -7,510	-12%	-$392K	0.08%	184
2025 Q3	$3.03M	Hold	60,622	–	–	0.08%	179
2025 Q2	$3.12M	Sell	60,622 -9,510	-14%	-$483K	0.09%	158
2025 Q1	$3.75M	Sell	70,132 -59,510	-46%	-$3.12M	0.13%	148
2024 Q4	$6.2M	Hold	129,642	–	–	0.22%	114
2024 Q3	$5.76M	Hold	129,642	–	–	0.24%	107
2024 Q2	$5.52M	Hold	129,642	–	–	0.23%	105
2024 Q1	$5.39M	Hold	129,642	–	–	0.22%	106
2023 Q4	$4.76M	Hold	129,642	–	–	0.21%	118
2023 Q3	$4.61M	Hold	129,642	–	–	0.24%	107
2023 Q2	$4.4M	Sell	129,642 -29,230	-18%	-$998K	0.2%	119
2023 Q1	$5.47M	Buy	158,872 +9,540	+6%	+$328K	0.27%	87
2022 Q4	$4.9M	Hold	149,332	–	–	0.26%	96
2022 Q3	$4.48M	Sell	149,332 -37,330	-20%	-$1.17M	0.25%	102
2022 Q2	$5.44M	Hold	186,662	–	–	0.29%	82
2022 Q1	$6.19M	Hold	186,662	–	–	0.27%	93
2021 Q4	$5.52M	Sell	186,662 -63,500	-25%	-$1.9M	0.2%	119
2021 Q3	$7.12M	Sell	250,162 -9,880	-4%	-$280K	0.27%	99
2021 Q2	$7.7M	Hold	260,042	–	–	0.26%	106
2021 Q1	$6.67M	Buy	260,042 +1,098	+0.4%	+$26.9K	0.24%	116
2020 Q4	$5.61M	Buy	258,944 +86,720	+50%	+$1.71M	0.21%	130
2020 Q3	$2.71M	Buy	172,224 +17,340	+11%	+$313K	0.11%	163
2020 Q2	$2.68M	Hold	154,884	–	–	0.12%	165
2020 Q1	$1.8M	Sell	154,884 -196,155	-56%	-$4.02M	0.11%	157
2019 Q4	$8.94M	Buy	351,039 +147,875	+73%	+$3.77M	0.36%	92
2019 Q3	$5.69M	Sell	203,164 -56,914	-22%	-$1.67M	0.23%	139
2019 Q2	$8.37M	Hold	260,078	–	–	0.32%	107
2019 Q1	$8.55M	Hold	260,078	–	–	0.32%	103
2018 Q4	$7.88M	Buy	260,078 +16,080	+7%	+$537K	0.34%	90
2018 Q3	$8.46M	Hold	243,998	–	–	0.24%	134
2018 Q2	$8.33M	Sell	243,998 -62,530	-20%	-$2.18M	0.26%	127
2018 Q1	$10.1M	Buy	306,528 +60,000	+24%	+$2.15M	0.32%	96
2017 Q4	$8.74M	Sell	246,528 -14,400	-6%	-$507K	0.26%	129
2017 Q3	$9.13M	Buy	260,928 +3,850	+1%	+$133K	0.29%	125
2017 Q2	$8.59M	Sell	257,078 -20,780	-7%	-$719K	0.28%	128
2017 Q1	$10M	Buy	277,858 +76,109	+38%	+$2.8M	0.31%	105
2016 Q4	$6.99M	Buy	201,749 +18,220	+10%	+$591K	0.22%	158
2016 Q3	$6.21M	Hold	183,529	–	–	0.19%	160
2016 Q2	$6.17M	Buy	183,529 +87,810	+92%	+$2.79M	0.2%	147
2016 Q1	$2.84M	Buy	95,719 +3,505	+4%	+$95.1K	0.09%	235
2015 Q4	$3.63M	Buy	+92,214	New	+$3.48M	0.11%	206
2015 Q3	–	Sell	-39,590	Closed	-$2.83M	–	390
2015 Q2	$2.83M	Sell	39,590 -11,310	-22%	-$837K	0.08%	251
2015 Q1	$3.73M	Sell	50,900 -10,310	-17%	-$783K	0.09%	232
2014 Q4	$4.5M	Buy	61,210 +15,910	+35%	+$1.01M	0.12%	172
2014 Q3	$2.22M	Hold	45,300	–	–	0.06%	217
2014 Q2	$2.92M	Hold	45,300	–	–	0.08%	203
2014 Q1	$2.22M	Buy	45,300 +20,000	+79%	+$926K	0.06%	217
2013 Q4	$1.13M	Sell	25,300 -20,000	-44%	-$758K	0.03%	240
2013 Q3	$2.67M	Buy	45,300 +23,400	+107%	+$845K	0.08%	210
2013 Q2	$806K	Buy	+21,900	New	+$814K	0.03%	243

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

Castleark Management's MPLX Position: Q2 2026 in Review

Castleark Management reduced its MPLX (MPLX) stake by 23% in Q2 2026, selling an estimated $547K and leaving 32,092 shares worth $1.81M. The position accounts for 0.05% of the portfolio, ranked #213.

Castleark Management first reported a position in MPLX in Q2 2013 and has held it in 52 quarters since. The position peaked at $10.1M in Q1 2018. 637 funds tracked by Wall St. Rank hold MPLX as of Q2 2026.

Castleark Management held 32,092 shares of MPLX worth $1.81M as of Q2 2026.
Castleark Management sold 9,800 MPLX shares in Q2 2026, an estimated $547K.
MPLX made up 0.05% of Castleark Management's portfolio in Q2 2026, its #213 holding.
Castleark Management first reported a position in MPLX in Q2 2013 and has held it in 52 quarters since.
Castleark Management's MPLX position peaked at $10.1M in Q1 2018.
637 funds tracked by Wall St. Rank held MPLX as of Q2 2026.

Based on Castleark Management's 13F filing for Q2 2026, filed 14 Aug 2026.