T. Rowe Price Investment Management
MIAX

T. Rowe Price Investment Management’s Miami International Holdings MIAX Stock Holding History

T. Rowe Price Investment 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 		$161M Buy
4,145,618
+1,119,906
+37% +$46.1M 0.11% 186
2025
Q4 		$134M Buy
3,025,712
+595,096
+24% +$26.5M 0.08% 212
2025
Q3 		$97.9M Buy
+2,430,616
New +$88.9M 0.06% 273

Other funds holding MIAX

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 $6.73T AUM 46.02% 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

T. Rowe Price Investment Management's MIAX Position: Q1 2026 in Review

T. Rowe Price Investment Management increased its Miami International Holdings (MIAX) stake by 37% in Q1 2026, buying an estimated $46.1M and bringing the position to 4,145,618 shares worth $161M. The position accounts for 0.11% of the portfolio, ranked #186.

T. Rowe Price Investment 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.

  • T. Rowe Price Investment Management held 4,145,618 shares of Miami International Holdings worth $161M as of Q1 2026.
  • T. Rowe Price Investment Management bought 1,119,906 Miami International Holdings shares in Q1 2026, an estimated $46.1M.
  • Miami International Holdings made up 0.11% of T. Rowe Price Investment Management's portfolio in Q1 2026, its #186 holding.
  • T. Rowe Price Investment 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 T. Rowe Price Investment Management's 13F filing for Q1 2026, filed 15 May 2026.