Jane Street’s Miami International Holdings MIAX Stock Holding History

Jane Street’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	–	Sell	-638,050	Closed	-$26.3M	–	13556
2025 Q4	$28.3M	Buy	638,050 +148,452	+30%	+$6.62M	﹤0.01%	1311
2025 Q3	$19.7M	Buy	+489,598	New	+$17.9M	﹤0.01%	1676

Other funds holding MIAX

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 Bala Cynwyd, Pennsylvania $893B AUM 36.07% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

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 Boston, Massachusetts $64.8B AUM 42.7% 1-Year Est. Return

Jane Street's MIAX Position: Q1 2026 in Review

Jane Street sold out of Miami International Holdings (MIAX) in Q1 2026, closing a stake of 638,050 shares — an estimated $26.3M sold.

Jane Street first reported a position in MIAX in Q3 2025 and held it in 2 quarters. The position peaked at $28.3M in Q4 2025. 201 funds tracked by Wall St. Rank hold MIAX as of Q1 2026.

Jane Street reported no remaining Miami International Holdings position as of Q1 2026 after selling out during the quarter.
Jane Street sold 638,050 Miami International Holdings shares in Q1 2026, an estimated $26.3M.
Jane Street first reported a position in Miami International Holdings in Q3 2025 and held it in 2 quarters.
Jane Street's Miami International Holdings position peaked at $28.3M in Q4 2025.
201 funds tracked by Wall St. Rank held Miami International Holdings as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.