Form SCHEDULE 13D/A MIAMI INTERNATIONAL HOLD Filed by: HORIZON KINETICS ASSET MANAGEMENT LLC
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 |
SCHEDULE 13D
Under the Securities Exchange Act of 1934
(Amendment No. 4)*
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MIAMI INTERNATIONAL HOLDINGS, INC. (Name of Issuer) |
Common Stock (Title of Class of Securities) |
(CUSIP Number) |
Jay Kesslen 470 Park Ave S, 8th Fl S New York, NY, 10016 646-867-1176 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) |
05/19/2026 (Date of Event Which Requires Filing of This Statement) |
If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.
The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the
Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other
provisions of the Act (however, see the Notes).
SCHEDULE 13D
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| CUSIP No. |
| 1 |
Name of reporting person
HORIZON KINETICS ASSET MANAGEMENT LLC | ||||||||
| 2 | Check the appropriate box if a member of a Group (See Instructions)
(a)
(b) | ||||||||
| 3 | SEC use only | ||||||||
| 4 |
Source of funds (See Instructions)
WC | ||||||||
| 5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
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| 6 | Citizenship or place of organization
DELAWARE
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| Number of Shares Beneficially Owned by Each Reporting Person With: |
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| 11 | Aggregate amount beneficially owned by each reporting person
7,400,316.00 | ||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
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| 13 | Percent of class represented by amount in Row (11)
7.8 % | ||||||||
| 14 | Type of Reporting Person (See Instructions)
IA |
Comment for Type of Reporting Person:
Horizon Kinetics Asset Management LLC ("HKAM"), a Delaware limited liability company and a wholly owned subsidiary of Horizon Kinetics Holding Corporation ("HKHC"), a Delaware corporation, manages funds and accounts ("Managed Accounts") that hold securities of the Issuer.
The following constitutes Amendment No. 4 to the Schedule 13D filed by the undersigned. This Amendment No. 4 amends, supplements and to the extent inconsistent with, supersedes the initial Schedule 13D filed with the Securities and Exchange Commission on August 13, 2025, as amended by Amendment No. 1 filed November 24, 2025, Amendment No. 2 filed April 14, 2026, and Amendment No. 3 filed April 27, 2026.
SCHEDULE 13D
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| CUSIP No. |
| 1 |
Name of reporting person
Horizon Kinetics Holding Corp | ||||||||
| 2 | Check the appropriate box if a member of a Group (See Instructions)
(a)
(b) | ||||||||
| 3 | SEC use only | ||||||||
| 4 |
Source of funds (See Instructions)
AF | ||||||||
| 5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
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| 6 | Citizenship or place of organization
DELAWARE
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| Number of Shares Beneficially Owned by Each Reporting Person With: |
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| 11 | Aggregate amount beneficially owned by each reporting person
7,400,316.00 | ||||||||
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
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| 13 | Percent of class represented by amount in Row (11)
7.8 % | ||||||||
| 14 | Type of Reporting Person (See Instructions)
HC |
Comment for Type of Reporting Person:
HKHC is the parent company to HKAM, a registered investment adviser. HKHC may be deemed to beneficially own the 7,400,316 shares beneficially owned by HKAM. HKHC has not entered into any separate transactions in the shares other than those listed under Schedule A, and as described in Item 4 below, which were effectuated by HKAM.
SCHEDULE 13D
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| Item 1. | Security and Issuer |
| (a) | Title of Class of Securities:
Common Stock |
| (b) | Name of Issuer:
MIAMI INTERNATIONAL HOLDINGS, INC. |
| (c) | Address of Issuer's Principal Executive Offices:
7 ROSZEL ROAD, FIFTH FLOOR, SUITE 1-A, PRINCETON,
NEW JERSEY
, 08540. |
| Item 4. | Purpose of Transaction |
HKAM acquired the securities reported herein on behalf of the Managed Accounts for investment purposes. In the ordinary course of its business, HKAM intends to regularly review its equity interest in the Issuer and may, from time to time, acquire additional shares or other securities of the Issuer. While HKAM has no present intention to dispose of all or any portion of the shares beneficially owned by Managed Accounts, it may sell shares from time to time for a number of reasons, not limited to client requests, regulatory or investment limitations or other reasons. Any such sales of securities of the Issuer may be in the open market, privately negotiated transactions or otherwise.
On May 19, 2026, HKAM distributed 4,084,261 shares in-kind on a pro rata basis without consideration to the beneficial owners of the Managed Accounts in response to client requests. | |
| Item 5. | Interest in Securities of the Issuer |
| (a) | Item 5 is hereby amended and restated in its entirety to read as follows:
As of the close of business on May 19, 2026, HKAM beneficially owned 7,400,316 shares of common stock.
The 7,400,316 shares beneficially owned represented 7.8% of the outstanding shares of common stock.
Neither the filing of this Schedule 13D nor any of its contents shall be deemed to constitute an admission that HKAM is the beneficial owner of the common stock referred to herein for purposes of Sections 13(d) and or 16 of the Securities Exchange Act of 1934, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of its pecuniary interest therein. |
| (b) | HKAM's sole power to vote is 7,400,316 shares. |
| (c) | Except as set forth in this Schedule 13D, Item 4 above, and Schedule A attached hereto as Exhibit 99, HKAM has not effected any transaction in common stock in the past 60 days. |
| (d) | Except for Managed Accounts, who may have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, common stock, no other person is known by HKAM to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, any common stock that may be beneficially owned by HKAM. |
| (e) | n/a |
| Item 7. | Material to be Filed as Exhibits. |
Exhibit 99 - 60 Day Trading History |
| SIGNATURE | |
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
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ATTACHMENTS / EXHIBITS