California State Teachers Retirement System (CalSTRS)
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California State Teachers Retirement System (CalSTRS)’s Miami International Holdings MIAX Stock Holding History

California State Teachers Retirement System (CalSTRS)’s Portfolio MIAX Stock Details MIAX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$824K Buy
22,175
+6,252
+39% +$280K ﹤0.01% 2016
2026
Q1 		$620K Sell
15,923
-107
-0.7% -$4.41K ﹤0.01% 1988
2025
Q4 		$711K Buy
+16,030
New +$715K ﹤0.01% 1944

Other funds holding MIAX

Horizon Kinetics Asset Management
Horizon Kinetics Asset Management New York $8.82B AUM 23.05% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
JD6
J Digital 6 Chicago, Illinois $169M AUM 111.5% 1-Year Est. Return
William Blair & Company
William Blair & Company Chicago, Illinois $38.4B AUM 25.71% 1-Year Est. Return
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $80.2B AUM 51.53% 1-Year Est. Return

California State Teachers Retirement System (CalSTRS)'s MIAX Position: Q2 2026 in Review

California State Teachers Retirement System (CalSTRS) increased its Miami International Holdings (MIAX) stake by 39% in Q2 2026, buying an estimated $280K and bringing the position to 22,175 shares worth $824K. The position accounts for ﹤0.01% of the portfolio, ranked #2016.

California State Teachers Retirement System (CalSTRS) first reported a position in MIAX in Q4 2025 and has held it in 3 quarters since. 206 funds tracked by Wall St. Rank hold MIAX as of Q2 2026.

  • California State Teachers Retirement System (CalSTRS) held 22,175 shares of Miami International Holdings worth $824K as of Q2 2026.
  • California State Teachers Retirement System (CalSTRS) bought 6,252 Miami International Holdings shares in Q2 2026, an estimated $280K.
  • Miami International Holdings made up ﹤0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q2 2026, its #2016 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Miami International Holdings in Q4 2025 and has held it in 3 quarters since.
  • 206 funds tracked by Wall St. Rank held Miami International Holdings as of Q2 2026.

Based on California State Teachers Retirement System (CalSTRS)'s 13F filing for Q2 2026, filed 24 Aug 2026.