HORIZON KINETICS ASSET MANAGEMENT LLC

Position in MIAX — Miami International Holdings, Inc.

CIK 1056823 NEW YORK, NY

Position in MIAX

as of Jun 30, 2026 · filed Aug 11, 2026 Compact

Position Value

$291,415,148

+$157,080,861 QoQ

Shares Held

7,842,173

+127.2% QoQ

Ownership

7.90%

of shares outstanding

% of Portfolio

3.33%

of 13F equity value

Holder Rank

of 204 holders

Holding Since

Sep 2025

4 quarters on record

Voting authority Sole 100% Shared 0% None 0%

Financial Services · as of Jun 30, 2026

HORIZON KINETICS ASSET MANAGEMENT LLC holds $336,288,397 across 6 Capital Markets names. MIAX ranks #1 (86.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MIAX	Miami International Holdings, Inc. This page	7,842,173	$291,415,148
2	GLXY	Galaxy Digital Inc.	1,236,051	$33,793,634
3	TW	Tradeweb Markets Inc.	97,740	$9,740,768
4	GS	Goldman Sachs Group Inc	598	$604,799
5	CRCL	Circle Internet Group, Inc.	7,636	$478,242
6	MKTX	Marketaxess Holdings Inc	2,254	$255,806

9 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$291,415,148	7,842,173	+127.2%	Shares	Defined	2026-08-11
2026-05-19	$395,472,887	7,400,316	-33.7%	Shares	Sole	2026-05-21
2026-04-24	$512,038,048	11,162,809	+0.9%	Shares	Sole	2026-04-28
2026-04-07	$457,057,006	11,061,399	+16.4%	Shares	Sole	2026-04-14
2026-03-31	$134,334,287	3,451,549	+89.7%	Shares	Defined	2026-05-15
2025-12-31	$80,762,635	1,819,798	+31.6%	Shares	Defined	2026-02-11
2025-11-24	$424,934,776	9,499,995	+9.5%	Shares	Sole	2025-11-26
2025-09-30	$55,655,544	1,382,403	—	Shares	Defined	2025-11-14
2025-08-14	$266,815,422	8,679,747	—	Shares	Sole	2025-08-21
No filing history on record for this holder in this stock.