California State Teachers Retirement System (CalSTRS)
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California State Teachers Retirement System (CalSTRS)’s Antero Midstream AM Stock Holding History

California State Teachers Retirement System (CalSTRS)’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 		$9.73M Buy
426,913
+88,900
+26% +$1.84M 0.01% 704
2025
Q4 		$6.01M Sell
338,013
-239
-0.1% -$4.31K 0.01% 833
2025
Q3 		$6.58M Buy
338,252
+5,852
+2% +$106K 0.01% 793
2025
Q2 		$6.3M Hold
332,400
– – 0.01% 799
2025
Q1 		$5.98M Sell
332,400
-3,642
-1% -$60.3K 0.01% 790
2024
Q4 		$5.07M Sell
336,042
-3,980
-1% -$60.6K 0.01% 904
2024
Q3 		$5.12M Sell
340,022
-9,656
-3% -$141K 0.01% 905
2024
Q2 		$5.15M Sell
349,678
-8,246
-2% -$118K 0.01% 878
2024
Q1 		$5.03M Sell
357,924
-18,646
-5% -$238K 0.01% 911
2023
Q4 		$4.72M Sell
376,570
-17,076
-4% -$215K 0.01% 949
2023
Q3 		$4.72M Sell
393,646
-14,936
-4% -$177K 0.01% 911
2023
Q2 		$4.74M Buy
408,582
+9,499
+2% +$101K 0.01% 990
2023
Q1 		$4.19M Sell
399,083
-6,553
-2% -$69.7K 0.01% 1049
2022
Q4 		$4.38M Buy
405,636
+4,472
+1% +$47.5K 0.01% 1017
2022
Q3 		$3.68M Sell
401,164
-7,080
-2% -$69.7K 0.01% 1075
2022
Q2 		$3.69M Buy
408,244
+171
+0% +$1.78K 0.01% 1129
2022
Q1 		$4.44M Sell
408,073
-37,111
-8% -$377K 0.01% 1128
2021
Q4 		$4.31M Sell
445,184
-96,933
-18% -$1.01M 0.01% 1249
2021
Q3 		$5.65M Sell
542,117
-26,712
-5% -$262K 0.01% 1072
2021
Q2 		$5.91M Buy
568,829
+70,690
+14% +$675K 0.01% 1071
2021
Q1 		$4.5M Sell
498,139
-827
-0.2% -$7.13K 0.01% 1258
2020
Q4 		$3.85M Buy
498,966
+8,104
+2% +$55K 0.01% 1263
2020
Q3 		$2.64M Buy
490,862
+8,488
+2% +$51.7K ﹤0.01% 1336
2020
Q2 		$2.46M Buy
482,374
+79,493
+20% +$352K ﹤0.01% 1343
2020
Q1 		$846K Buy
402,881
+10,829
+3% +$51.7K ﹤0.01% 1767
2019
Q4 		$2.98M Buy
392,052
+32,594
+9% +$206K 0.01% 1327
2019
Q3 		$2.66M Buy
359,458
+970
+0.3% +$8.38K 0.01% 1358
2019
Q2 		$4.11M Buy
+358,488
New +$4.59M 0.01% 1119

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

California State Teachers Retirement System (CalSTRS)'s AM Position: Q1 2026 in Review

California State Teachers Retirement System (CalSTRS) increased its Antero Midstream (AM) stake by 26% in Q1 2026, buying an estimated $1.84M and bringing the position to 426,913 shares worth $9.73M. The position accounts for 0.01% of the portfolio, ranked #704.

California State Teachers Retirement System (CalSTRS) first reported a position in AM in Q2 2019 and has held it in 28 quarters since. 510 funds tracked by Wall St. Rank hold AM as of Q1 2026.

  • California State Teachers Retirement System (CalSTRS) held 426,913 shares of Antero Midstream worth $9.73M as of Q1 2026.
  • California State Teachers Retirement System (CalSTRS) bought 88,900 Antero Midstream shares in Q1 2026, an estimated $1.84M.
  • Antero Midstream made up 0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q1 2026, its #704 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Antero Midstream in Q2 2019 and has held it in 28 quarters since.
  • 510 funds tracked by Wall St. Rank held Antero Midstream as of Q1 2026.

Based on California State Teachers Retirement System (CalSTRS)'s 13F filing for Q1 2026, filed 18 May 2026.