Marshall Wace
AM icon

Marshall Wace’s Antero Midstream AM Stock Holding History

Marshall Wace’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 		$3.68M Buy
161,558
+143,033
+772% +$3.11M ﹤0.01% 1525
2026
Q1 		$422K Sell
18,525
-144,220
-89% -$2.98M ﹤0.01% 2519
2025
Q4 		$2.9M Buy
162,745
+148,517
+1,044% +$2.68M ﹤0.01% 1406
2025
Q3 		$277K Sell
14,228
-466,077
-97% -$8.42M ﹤0.01% 2458
2025
Q2 		$9.1M Buy
480,305
+246,170
+105% +$4.4M 0.01% 878
2025
Q1 		$4.21M Buy
+234,135
New +$3.88M 0.01% 1145
2024
Q2 		– Sell
-35,120
Closed -$494K – 2507
2024
Q1 		$494K Buy
+35,120
New +$449K ﹤0.01% 1925
2019
Q1 		– Sell
-741,000
Closed -$8.28M – 1691
2018
Q4 		$8.28M Buy
741,000
+729,265
+6,214% +$11.1M 0.08% 301
2018
Q3 		$199K Buy
+11,735
New +$215K ﹤0.01% 1072

Other funds holding AM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
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
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return

Marshall Wace's AM Position: Q2 2026 in Review

Marshall Wace increased its Antero Midstream (AM) stake by 772% in Q2 2026, buying an estimated $3.11M and bringing the position to 161,558 shares worth $3.68M. The position accounts for ﹤0.01% of the portfolio, ranked #1525.

Marshall Wace first reported a position in AM in Q3 2018 and has held it in 9 quarters since. The position peaked at $9.1M in Q2 2025. 533 funds tracked by Wall St. Rank hold AM as of Q2 2026.

  • Marshall Wace held 161,558 shares of Antero Midstream worth $3.68M as of Q2 2026.
  • Marshall Wace bought 143,033 Antero Midstream shares in Q2 2026, an estimated $3.11M.
  • Antero Midstream made up ﹤0.01% of Marshall Wace's portfolio in Q2 2026, its #1525 holding.
  • Marshall Wace first reported a position in Antero Midstream in Q3 2018 and has held it in 9 quarters since.
  • Marshall Wace's Antero Midstream position peaked at $9.1M in Q2 2025.
  • 533 funds tracked by Wall St. Rank held Antero Midstream as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.