Aigen Investment Management’s Antero Midstream AM Stock Holding History

Aigen Investment 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	$247K	Buy	+10,817	New	+$223K	0.06%	372
2025 Q3	–	Sell	-112,893	Closed	-$2.14M	–	777
2025 Q2	$2.14M	Buy	+112,893	New	+$2.02M	0.29%	82
2025 Q1	–	Sell	-33,916	Closed	-$512K	–	743
2024 Q4	$512K	Buy	33,916 +19,484	+135%	+$297K	0.09%	323
2024 Q3	$217K	Buy	+14,432	New	+$210K	0.04%	560
2024 Q2	–	Sell	-54,972	Closed	-$773K	–	751
2024 Q1	$773K	Sell	54,972 -22,892	-29%	-$293K	0.17%	189
2023 Q4	$976K	Sell	77,864 -2,661	-3%	-$33.5K	0.17%	160
2023 Q3	$965K	Buy	+80,525	New	+$954K	0.18%	170
2022 Q1	–	Sell	-24,796	Closed	-$239K	–	532
2021 Q4	$239K	Sell	24,796 -26,174	-51%	-$271K	0.01%	871
2021 Q3	$531K	Buy	+50,970	New	+$500K	0.1%	241
2021 Q2	–	Sell	-44,289	Closed	-$400K	–	448
2021 Q1	$400K	Sell	44,289 -10,726	-19%	-$92.4K	0.05%	344
2020 Q4	$424K	Buy	+55,015	New	+$373K	0.06%	437

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

Aigen Investment Management's AM Position: Q1 2026 in Review

Aigen Investment Management opened a new position in Antero Midstream (AM) in Q1 2026: 10,817 shares worth $247K. The stake represents 0.06% of the portfolio and ranks #372 among its holdings. This is a return to the name: Aigen Investment Management previously reported a position in AM as recently as Q2 2025.

Aigen Investment Management first reported a position in AM in Q4 2020 and has held it in 11 quarters since. The position peaked at $2.14M in Q2 2025. 510 funds tracked by Wall St. Rank hold AM as of Q1 2026.

Aigen Investment Management held 10,817 shares of Antero Midstream worth $247K as of Q1 2026.
Antero Midstream was a new Aigen Investment Management position in Q1 2026.
Antero Midstream made up 0.06% of Aigen Investment Management's portfolio in Q1 2026, its #372 holding.
Aigen Investment Management first reported a position in Antero Midstream in Q4 2020 and has held it in 11 quarters since.
Aigen Investment Management's Antero Midstream position peaked at $2.14M in Q2 2025.
510 funds tracked by Wall St. Rank held Antero Midstream as of Q1 2026.

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