HKAM
MIAX

Horizon Kinetics Asset Management’s Miami International Holdings MIAX Stock Holding History

Horizon Kinetics Asset Management’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
Q1 		$134M Buy
3,451,549
+1,631,751
+90% +$67.2M 1.46% 9
2025
Q4 		$80.8M Buy
1,819,798
+437,395
+32% +$19.5M 1.09% 15
2025
Q3 		$55.7M Buy
+1,382,403
New +$50.6M 0.68% 22

Other funds holding MIAX

T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $35.4B AUM 33.54% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Adage Capital Partners
Adage Capital Partners Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

Horizon Kinetics Asset Management's MIAX Position: Q1 2026 in Review

Horizon Kinetics Asset Management increased its Miami International Holdings (MIAX) stake by 90% in Q1 2026, buying an estimated $67.2M and bringing the position to 3,451,549 shares worth $134M. The position accounts for 1.46% of the portfolio, ranked #9.

Horizon Kinetics Asset Management first reported a position in MIAX in Q3 2025 and has held it in 3 quarters since. 201 funds tracked by Wall St. Rank hold MIAX as of Q1 2026.

  • Horizon Kinetics Asset Management held 3,451,549 shares of Miami International Holdings worth $134M as of Q1 2026.
  • Horizon Kinetics Asset Management bought 1,631,751 Miami International Holdings shares in Q1 2026, an estimated $67.2M.
  • Miami International Holdings made up 1.46% of Horizon Kinetics Asset Management's portfolio in Q1 2026, its #9 holding.
  • Horizon Kinetics Asset Management first reported a position in Miami International Holdings in Q3 2025 and has held it in 3 quarters since.
  • 201 funds tracked by Wall St. Rank held Miami International Holdings as of Q1 2026.

Based on Horizon Kinetics Asset Management's 13F filing for Q1 2026, filed 15 May 2026.