Beneficial Ownership Report · SCHEDULE 13G
Dynamix Corporation
Beneficial Ownership Report
Structured filing — SCHEDULE 13G
primary_doc.xml
Subject company
- Company
- Dynamix Corporation
- Company CIK
- 0002028699
- Street
- 1980 Post Oak Blvd., Suite 100
- Street (continued)
- PMB 6373
- City
- Houston
- State / country code
- TX
- Postal code
- 77056
Statement details
- Security class
- Class A ordinary shares, par value $0.0001 per share (the "Shares")
- Event date
- 04/07/2026
- Rule designation
- Rule 13d-1(c)
Reporting person 1
- Name
- Citadel Advisors LLC
- Citizenship / organization
- DE
- Reporting person type
- IA · HC · OO
- Aggregate amount owned
- 1,250,000.00
- Percent of class
- 7.5
- Sole voting power
- 0.00
- Shared voting power
- 1,250,000.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 1,250,000.00
- Aggregate excludes certain shares
- N
- Comments
- The percentages reported in this Schedule 13G are based upon 16,600,113 Shares outstanding comprised of (i) 16,600,000 Shares outstanding as of March 3, 2026 (according to the issuer's Form 10-K as filed with the Securities and Exchange Commission on March 6, 2026), and (ii) 113 Shares issuable upon conversion of certain warrants held by affiliates of the reporting persons. Except as described in the preceding sentence, all Shares for the holdings of the reporting persons reported in this Schedule 13G are as of the opening of the market on April 14, 2026.
Reporting person 2
- Name
- Citadel Advisors Holdings LP
- Citizenship / organization
- DE
- Reporting person type
- HC · PN
- Aggregate amount owned
- 1,250,000.00
- Percent of class
- 7.5
- Sole voting power
- 0.00
- Shared voting power
- 1,250,000.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 1,250,000.00
- Aggregate excludes certain shares
- N
Reporting person 3
- Name
- Citadel GP LLC
- Citizenship / organization
- DE
- Reporting person type
- HC · OO
- Aggregate amount owned
- 1,250,000.00
- Percent of class
- 7.5
- Sole voting power
- 0.00
- Shared voting power
- 1,250,000.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 1,250,000.00
- Aggregate excludes certain shares
- N
Reporting person 4
- Name
- Citadel Securities LLC
- Citizenship / organization
- DE
- Reporting person type
- BD · OO
- Aggregate amount owned
- 62,566.00
- Percent of class
- 0.4
- Sole voting power
- 0.00
- Shared voting power
- 62,566.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 62,566.00
- Aggregate excludes certain shares
- N
Reporting person 5
- Name
- Citadel Securities Group LP
- Citizenship / organization
- DE
- Reporting person type
- HC · PN
- Aggregate amount owned
- 62,566.00
- Percent of class
- 0.4
- Sole voting power
- 0.00
- Shared voting power
- 62,566.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 62,566.00
- Aggregate excludes certain shares
- N
Reporting person 6
- Name
- Citadel Securities GP LLC
- Citizenship / organization
- DE
- Reporting person type
- HC · OO
- Aggregate amount owned
- 62,566.00
- Percent of class
- 0.4
- Sole voting power
- 0.00
- Shared voting power
- 62,566.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 62,566.00
- Aggregate excludes certain shares
- N
Reporting person 7
- Name
- Kenneth Griffin
- Citizenship / organization
- X1
- Reporting person type
- HC · IN
- Aggregate amount owned
- 1,312,566.00
- Percent of class
- 7.9
- Sole voting power
- 0.00
- Shared voting power
- 1,312,566.00
- Sole dispositive power
- 0.00
- Shared dispositive power
- 1,312,566.00
- Aggregate excludes certain shares
- N
Item 1
Issuer
Dynamix Corporation
Principal executive office address
1980 Post Oak Blvd., Suite 100 PMB 6373 Houston, TX, 77056
Item 2
Citizenship
Each of Citadel Advisors, CGP, Citadel Securities and CSGP is organized as a limited liability company under the laws of the State of Delaware. Each of CALC4 and CAH is organized as a limited partnership under the laws of the State of Delaware. Mr. Griffin is a U.S. citizen.
Filing person
This Schedule 13G is being jointly filed by Citadel Advisors LLC ("Citadel Advisors"), Citadel Advisors Holdings LP ("CAH"), Citadel GP LLC ("CGP"), Citadel Securities LLC ("Citadel Securities"), Citadel Securities Group LP ("CALC4"), Citadel Securities GP LLC ("CSGP") and Mr. Kenneth Griffin (collectively with Citadel Advisors, CAH, CGP, Citadel Securities, CALC4 and CSGP, the "Reporting Persons") with respect to the Shares of the above-named issuer owned by Citadel Multi-Strategy Equities Master Fund Ltd., a Cayman Islands company ("CM"), and Citadel Securities. Such owned Shares may include other instruments exercisable for or convertible into Shares. Citadel Advisors is the portfolio manager for CM. CAH is the sole member of Citadel Advisors. CGP is the general partner of CAH. CALC4 is the non-member manager of Citadel Securities. CSGP is the general partner of CALC4. Mr. Griffin is the President and Chief Executive Officer of CGP, and owns a controlling interest in CGP and CSGP. The filing of this statement shall not be construed as an admission that any of the Reporting Persons is the beneficial owner of any securities covered by the statement other than the securities actually owned by such person (if any).
Principal business or residence address
The address of each of the Reporting Persons is 830 Brickell Plaza, Miami, Florida 33131.
Item 3
Not applicable indication
Y
Item 4
Percent of class
1. The number of Shares that each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC may be deemed to beneficially own constitutes 7.5% of the Shares outstanding. 2. The number of Shares that Citadel Securities LLC may be deemed to beneficially own constitutes 0.4% of the Shares outstanding. 3. The number of Shares that each of Citadel Securities Group LP and Citadel Securities GP LLC may be deemed to beneficially own constitutes 0.4% of the Shares outstanding. 4. The number of Shares that Mr. Griffin may be deemed to beneficially own constitutes 7.9% of the Shares outstanding.
Amount beneficially owned
1. Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC may be deemed to beneficially own 1,250,000 Shares. 2. Citadel Securities LLC may be deemed to beneficially own 62,566 Shares. 3. Each of Citadel Securities Group LP and Citadel Securities GP LLC may be deemed to beneficially own 62,566 Shares. 4. Mr. Griffin may be deemed to beneficially own 1,312,566 Shares.
Sole voting power
1. Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC: 0 2. Citadel Securities LLC: 0 3. Each of Citadel Securities Group LP and Citadel Securities GP LLC: 0 4. Mr. Griffin: 0
Shared voting power
1. Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC: 1,250,000 2. Citadel Securities LLC: 62,566 3. Each of Citadel Securities Group LP and Citadel Securities GP LLC: 62,566 4. Mr. Griffin: 1,312,566
Sole dispositive power
1. Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC: 0 2. Citadel Securities LLC: 0 3. Each of Citadel Securities Group LP and Citadel Securities GP LLC: 0 4. Mr. Griffin: 0
Shared dispositive power
1. Each of Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC: 1,250,000 2. Citadel Securities LLC: 62,566 3. Each of Citadel Securities Group LP and Citadel Securities GP LLC: 62,566 4. Mr. Griffin: 1,312,566
Item 5
Not applicable indication
Y
Item 6
Not applicable indication
Y
Item 7
Not applicable indication
Y
Item 8
Not applicable indication
Y
Item 9
Not applicable indication
Y
Item 10
Not applicable indication
N
Certifications
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.
Exhibits
Exhibit 99.1 - Joint Filing Agreement
Signature comments
* Seth Levy is signing on behalf of Kenneth Griffin as attorney-in-fact pursuant to a power of attorney previously filed with the Securities and Exchange Commission, and hereby incorporated by reference herein. The power of attorney was filed as an attachment to a filing by Citadel Advisors LLC on Schedule 13G for Allakos Inc. on October 13, 2023.
Signature 1
- Reporting person
- Citadel Advisors LLC
- Signed
- /s/ Seth Levy
- Title
- Seth Levy, Authorized Signatory
- Date
- 04/14/2026
Signature 2
- Reporting person
- Citadel Advisors Holdings LP
- Signed
- /s/ Seth Levy
- Title
- Seth Levy, Authorized Signatory
- Date
- 04/14/2026
Signature 3
- Reporting person
- Citadel GP LLC
- Signed
- /s/ Seth Levy
- Title
- Seth Levy, Authorized Signatory
- Date
- 04/14/2026
Signature 4
- Reporting person
- Citadel Securities LLC
- Signed
- /s/ Seth Levy
- Title
- Seth Levy, Authorized Signatory
- Date
- 04/14/2026
Signature 5
- Reporting person
- Citadel Securities Group LP
- Signed
- /s/ Seth Levy
- Title
- Seth Levy, Authorized Signatory
- Date
- 04/14/2026
Signature 6
- Reporting person
- Citadel Securities GP LLC
- Signed
- /s/ Seth Levy
- Title
- Seth Levy, Authorized Signatory
- Date
- 04/14/2026
Signature 7
- Reporting person
- Kenneth Griffin
- Signed
- /s/ Seth Levy
- Title
- Seth Levy, attorney-in-fact*
- Date
- 04/14/2026
Filed exhibits
- EXHIBIT 99.1 ↗tm2611805d1_ex99-1.htm
Company context
Dynamix Corporation (“Dynamix”) is a special purpose acquisition company incorporated under the laws of Cayman Islands for the purpose of effecting a merger, amalgamation, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses. Dynamix is led by the following seasoned investors and industry executives: Andrea “Andrejka” Bernatova, Chief Executive Officer and Chairman, Nader Daylami, Chief Financial Officer, Philip Rajan, Vice President of M&A and Strategy and board members, Lynn A. Peterson, Diaco Aviki and Tyler Crabtree. Additionally, Ralph Alexander, Joe Gatto, Peter Gross, Jimmy Henderson, Tommy Stone, and Steve Webster served as Advisors to Dynamix. Dynamix maintains a corporate website at https://dynamix-corp.com.