William Blair & Company
AM icon

William Blair & Company’s Antero Midstream AM Stock Holding History

William Blair & Company’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 		$845K Buy
+37,159
New +$807K ﹤0.01% 1044

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State Street
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Geode Capital Management
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TCA
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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

William Blair & Company's AM Position: Q2 2026 in Review

William Blair & Company opened a new position in Antero Midstream (AM) in Q2 2026: 37,159 shares worth $845K. The stake represents ﹤0.01% of the portfolio and ranks #1044 among its holdings.

528 funds tracked by Wall St. Rank hold AM as of Q2 2026.

  • William Blair & Company held 37,159 shares of Antero Midstream worth $845K as of Q2 2026.
  • Antero Midstream was a new William Blair & Company position in Q2 2026.
  • Antero Midstream made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #1044 holding.
  • 528 funds tracked by Wall St. Rank held Antero Midstream as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.