Marshall Wace
MIAX

Marshall Wace’s Miami International Holdings MIAX Stock Holding History

Marshall Wace’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 		$4.77M Buy
+122,619
New +$5.05M ﹤0.01% 1331
2025
Q4 		– Sell
-77,960
Closed -$3.14M – 3634
2025
Q3 		$3.14M Buy
+77,960
New +$2.85M ﹤0.01% 1401

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

Marshall Wace's MIAX Position: Q1 2026 in Review

Marshall Wace opened a new position in Miami International Holdings (MIAX) in Q1 2026: 122,619 shares worth $4.77M. The stake represents ﹤0.01% of the portfolio and ranks #1331 among its holdings. This is a return to the name: Marshall Wace previously reported a position in MIAX as recently as Q3 2025.

Marshall Wace first reported a position in MIAX in Q3 2025 and has held it in 2 quarters since. 201 funds tracked by Wall St. Rank hold MIAX as of Q1 2026.

  • Marshall Wace held 122,619 shares of Miami International Holdings worth $4.77M as of Q1 2026.
  • Miami International Holdings was a new Marshall Wace position in Q1 2026.
  • Miami International Holdings made up ﹤0.01% of Marshall Wace's portfolio in Q1 2026, its #1331 holding.
  • Marshall Wace first reported a position in Miami International Holdings in Q3 2025 and has held it in 2 quarters since.
  • 201 funds tracked by Wall St. Rank held Miami International Holdings as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.