Healthcare of Ontario Pension Plan (HOOPP) Trust Fund
MIAX

Healthcare of Ontario Pension Plan (HOOPP) Trust Fund’s Miami International Holdings MIAX Stock Holding History

Healthcare of Ontario Pension Plan (HOOPP) Trust Fund’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 		$38.6M Buy
1,039,449
+799,449
+333% +$35.8M 0.05% 298
2026
Q1 		$9.34M Buy
240,000
+5,756
+2% +$237K 0.02% 572
2025
Q4 		$10.4M Buy
234,244
+34,244
+17% +$1.53M 0.02% 468
2025
Q3 		$8.05M Buy
+200,000
New +$7.32M 0.01% 482

Other funds holding MIAX

HKAM
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

Healthcare of Ontario Pension Plan (HOOPP) Trust Fund's MIAX Position: Q2 2026 in Review

Healthcare of Ontario Pension Plan (HOOPP) Trust Fund increased its Miami International Holdings (MIAX) stake by 333% in Q2 2026, buying an estimated $35.8M and bringing the position to 1,039,449 shares worth $38.6M. The position accounts for 0.05% of the portfolio, ranked #298.

Healthcare of Ontario Pension Plan (HOOPP) Trust Fund first reported a position in MIAX in Q3 2025 and has held it in 4 quarters since. 206 funds tracked by Wall St. Rank hold MIAX as of Q2 2026.

  • Healthcare of Ontario Pension Plan (HOOPP) Trust Fund held 1,039,449 shares of Miami International Holdings worth $38.6M as of Q2 2026.
  • Healthcare of Ontario Pension Plan (HOOPP) Trust Fund bought 799,449 Miami International Holdings shares in Q2 2026, an estimated $35.8M.
  • Miami International Holdings made up 0.05% of Healthcare of Ontario Pension Plan (HOOPP) Trust Fund's portfolio in Q2 2026, its #298 holding.
  • Healthcare of Ontario Pension Plan (HOOPP) Trust Fund first reported a position in Miami International Holdings in Q3 2025 and has held it in 4 quarters since.
  • 206 funds tracked by Wall St. Rank held Miami International Holdings as of Q2 2026.

Based on Healthcare of Ontario Pension Plan (HOOPP) Trust Fund's 13F filing for Q2 2026, filed 13 Aug 2026.