Massachusetts Financial Services
MIAX

Massachusetts Financial Services’s Miami International Holdings MIAX Stock Holding History

Massachusetts Financial Services’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 		$13.3M Buy
341,309
+67,401
+25% +$2.78M ﹤0.01% 703
2025
Q4 		$12.2M Sell
273,908
-23,806
-8% -$1.06M ﹤0.01% 700
2025
Q3 		$12M Buy
+297,714
New +$10.9M ﹤0.01% 677

Other funds holding MIAX

T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
HKAM
Horizon Kinetics Asset Management New York $9.23B AUM 27.52% 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

Massachusetts Financial Services's MIAX Position: Q1 2026 in Review

Massachusetts Financial Services increased its Miami International Holdings (MIAX) stake by 25% in Q1 2026, buying an estimated $2.78M and bringing the position to 341,309 shares worth $13.3M. The position accounts for ﹤0.01% of the portfolio, ranked #703.

Massachusetts Financial Services 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.

  • Massachusetts Financial Services held 341,309 shares of Miami International Holdings worth $13.3M as of Q1 2026.
  • Massachusetts Financial Services bought 67,401 Miami International Holdings shares in Q1 2026, an estimated $2.78M.
  • Miami International Holdings made up ﹤0.01% of Massachusetts Financial Services's portfolio in Q1 2026, its #703 holding.
  • Massachusetts Financial Services 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 Massachusetts Financial Services's 13F filing for Q1 2026, filed 14 May 2026.