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SIR Capital Management’s Antero Midstream AM Stock Holding History

SIR Capital 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 		– Sell
-1,772,534
Closed -$31.5M – 89
2025
Q4 		$31.5M Buy
1,772,534
+389,185
+28% +$7.01M 3.49% 7
2025
Q3 		$26.9M Buy
1,383,349
+1,266,794
+1,087% +$22.9M 2.41% 13
2025
Q2 		$2.21M Sell
116,555
-1,190,997
-91% -$21.3M 0.2% 73
2025
Q1 		$23.5M Sell
1,307,552
-1,015,718
-44% -$16.8M 2.07% 18
2024
Q4 		$35.1M Buy
+2,323,270
New +$35.4M 3.61% 5
2024
Q3 		– Sell
-559,774
Closed -$8.25M – 69
2024
Q2 		$8.25M Buy
+559,774
New +$8.03M 0.82% 48
2024
Q1 		– Sell
-913,811
Closed -$11.5M – 70
2023
Q4 		$11.5M Buy
913,811
+305,000
+50% +$3.85M 1.17% 31
2023
Q3 		$7.29M Buy
+608,811
New +$7.21M 0.87% 39

Other funds holding AM

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Invesco
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
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
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $544B AUM 28.31% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return

SIR Capital Management's AM Position: Q1 2026 in Review

SIR Capital Management sold out of Antero Midstream (AM) in Q1 2026, closing a stake of 1,772,534 shares — an estimated $31.5M sold.

SIR Capital Management first reported a position in AM in Q3 2023 and held it in 8 quarters. The position peaked at $35.1M in Q4 2024. 510 funds tracked by Wall St. Rank hold AM as of Q1 2026.

  • SIR Capital Management reported no remaining Antero Midstream position as of Q1 2026 after selling out during the quarter.
  • SIR Capital Management sold 1,772,534 Antero Midstream shares in Q1 2026, an estimated $31.5M.
  • SIR Capital Management first reported a position in Antero Midstream in Q3 2023 and held it in 8 quarters.
  • SIR Capital Management's Antero Midstream position peaked at $35.1M in Q4 2024.
  • 510 funds tracked by Wall St. Rank held Antero Midstream as of Q1 2026.

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