Westfield Capital Management’s Miami International Holdings MIAX Stock Holding History

Westfield Capital 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 Q2	$26M	Buy	+700,741	New	+$31.3M	0.09%	207

Other funds holding MIAX

HKAM

Horizon Kinetics Asset Management New York $8.82B AUM 23.05% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

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 Chicago, Illinois $38.4B AUM 25.71% 1-Year Est. Return

Balyasny Asset Management Chicago, Illinois $80.2B AUM 51.53% 1-Year Est. Return

Westfield Capital Management's MIAX Position: Q2 2026 in Review

Westfield Capital Management opened a new position in Miami International Holdings (MIAX) in Q2 2026: 700,741 shares worth $26M. The stake represents 0.09% of the portfolio and ranks #207 among its holdings.

205 funds tracked by Wall St. Rank hold MIAX as of Q2 2026.

Westfield Capital Management held 700,741 shares of Miami International Holdings worth $26M as of Q2 2026.
Miami International Holdings was a new Westfield Capital Management position in Q2 2026.
Miami International Holdings made up 0.09% of Westfield Capital Management's portfolio in Q2 2026, its #207 holding.
205 funds tracked by Wall St. Rank held Miami International Holdings as of Q2 2026.

Based on Westfield Capital Management's 13F filing for Q2 2026, filed 12 Aug 2026.