Castleark Management’s Antero Midstream AM Stock Holding History

Castleark Management’s Portfolio AM Stock Details AM Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$996K	Sell	43,680 -8,480	-16%	-$175K	0.03%	222
2025 Q4	$928K	Hold	52,160	–	–	0.03%	234
2025 Q3	$1.01M	Hold	52,160	–	–	0.03%	222
2025 Q2	$988K	Hold	52,160	–	–	0.03%	208
2025 Q1	$939K	Sell	52,160 -9,100	-15%	-$151K	0.03%	218
2024 Q4	$924K	Hold	61,260	–	–	0.03%	218
2024 Q3	$922K	Hold	61,260	–	–	0.04%	202
2024 Q2	$903K	Hold	61,260	–	–	0.04%	207
2024 Q1	$861K	Hold	61,260	–	–	0.04%	217
2023 Q4	$768K	Buy	61,260 +11,030	+22%	+$139K	0.03%	216
2023 Q3	$602K	Hold	50,230	–	–	0.03%	214
2023 Q2	$583K	Sell	50,230 -38,500	-43%	-$409K	0.03%	215
2023 Q1	$931K	Hold	88,730	–	–	0.05%	190
2022 Q4	$957K	Hold	88,730	–	–	0.05%	200
2022 Q3	$815K	Sell	88,730 -22,180	-20%	-$218K	0.05%	204
2022 Q2	$1M	Hold	110,910	–	–	0.05%	188
2022 Q1	$1.21M	Hold	110,910	–	–	0.05%	206
2021 Q4	$1.07M	Sell	110,910 -37,800	-25%	-$392K	0.04%	222
2021 Q3	$1.55M	Hold	148,710	–	–	0.06%	203
2021 Q2	$1.54M	Hold	148,710	–	–	0.05%	204
2021 Q1	$1.34M	Buy	+148,710	New	+$1.28M	0.05%	201
2019 Q2	–	Sell	-179,939	Closed	-$2.48M	–	350
2019 Q1	$2.48M	Buy	+179,939	New	+$2.35M	0.09%	214

Other funds holding AM

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

TCA

Tortoise Capital Advisors Overland Park, Kansas $9.6B AUM 19.53% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Bank of New York Mellon New York $544B AUM 28.31% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return

Castleark Management's AM Position: Q1 2026 in Review

Castleark Management reduced its Antero Midstream (AM) stake by 16% in Q1 2026, selling an estimated $175K and leaving 43,680 shares worth $996K. The position accounts for 0.03% of the portfolio, ranked #222.

Castleark Management first reported a position in AM in Q1 2019 and has held it in 22 quarters since. The position peaked at $2.48M in Q1 2019. 510 funds tracked by Wall St. Rank hold AM as of Q1 2026.

Castleark Management held 43,680 shares of Antero Midstream worth $996K as of Q1 2026.
Castleark Management sold 8,480 Antero Midstream shares in Q1 2026, an estimated $175K.
Antero Midstream made up 0.03% of Castleark Management's portfolio in Q1 2026, its #222 holding.
Castleark Management first reported a position in Antero Midstream in Q1 2019 and has held it in 22 quarters since.
Castleark Management's Antero Midstream position peaked at $2.48M in Q1 2019.
510 funds tracked by Wall St. Rank held Antero Midstream as of Q1 2026.

Based on Castleark Management's 13F filing for Q1 2026, filed 15 May 2026.