Atom Investors’s Antero Midstream AM Stock Holding History

Atom Investors’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 Q2	$610K	Buy	+26,818	New	+$582K	0.05%	509
2022 Q4	–	Sell	-18,261	Closed	-$168K	–	223
2022 Q3	$168K	Buy	+18,261	New	+$180K	0.06%	224
2021 Q4	–	Sell	-59,351	Closed	-$618K	–	268
2021 Q3	$618K	Buy	+59,351	New	+$582K	0.05%	179
2020 Q3	–	Sell	-358,548	Closed	-$1.83M	–	505
2020 Q2	$1.83M	Buy	358,548 +79,161	+28%	+$350K	0.12%	147
2020 Q1	$587K	Sell	279,387 -33,754	-11%	-$161K	0.05%	195
2019 Q4	$2.38M	Buy	+313,141	New	+$1.98M	0.19%	122

Other funds holding AM

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

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

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

TCA

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

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return

Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return

Atom Investors's AM Position: Q2 2026 in Review

Atom Investors opened a new position in Antero Midstream (AM) in Q2 2026: 26,818 shares worth $610K. The stake represents 0.05% of the portfolio and ranks #509 among its holdings. This is a return to the name: Atom Investors previously reported a position in AM as recently as Q3 2022.

Atom Investors first reported a position in AM in Q4 2019 and has held it in 6 quarters since. The position peaked at $2.38M in Q4 2019. 533 funds tracked by Wall St. Rank hold AM as of Q2 2026.

Atom Investors held 26,818 shares of Antero Midstream worth $610K as of Q2 2026.
Antero Midstream was a new Atom Investors position in Q2 2026.
Antero Midstream made up 0.05% of Atom Investors's portfolio in Q2 2026, its #509 holding.
Atom Investors first reported a position in Antero Midstream in Q4 2019 and has held it in 6 quarters since.
Atom Investors's Antero Midstream position peaked at $2.38M in Q4 2019.
533 funds tracked by Wall St. Rank held Antero Midstream as of Q2 2026.

Based on Atom Investors's 13F filing for Q2 2026, filed 14 Aug 2026.