Dynamix Corporation reports joint Schedule 13G disclosures from Citadel-related entities and Kenneth Griffin showing shared beneficial ownership positions. The filing states Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC each may be deemed to beneficially own 1,250,000 shares (7.5% of the class). Citadel Securities entities report 62,566 shares (0.4%), and Mr. Kenneth Griffin may be deemed to beneficially own 1,312,566 shares (7.9%). The filing ties percentages to 16,600,113 Shares outstanding as of March 3, 2026 and April 14, 2026 for certain holdings.
Positive
None.
Negative
None.
Insights
Large passive stake positions disclosed by Citadel affiliates and Kenneth Griffin; figures are concentrated but appear advisory/managed holdings.
The disclosure lists shared voting and dispositive power over 1,250,000 shares for Citadel Advisors-related entities and 1,312,566 shares attributable to Kenneth Griffin. The filing attributes percentages to 16,600,113 Shares outstanding, citing a Form 10-K as of March 3, 2026 and market opening on April 14, 2026.
Cash‑flow treatment or intent to transact is not stated in the excerpt; subsequent filings would be needed to show active buys/sells. Ownership is reported as shared power across multiple affiliated entities, indicating managerial/portfolio relationships rather than sole individual control.
Key Figures
Shares outstanding:16,600,113 sharesCitadel Advisors holding:1,250,000 sharesPercent of class (Citadel Advisors):7.5%+3 more
6 metrics
Shares outstanding16,600,113 sharesas of March 3, 2026 and April 14, 2026 per filing
Percent of class (Citadel Advisors)7.5%based on 16,600,113 Shares outstanding
Citadel Securities holding62,566 sharesreported for Citadel Securities entities
Kenneth Griffin holding1,312,566 sharesreported beneficial ownership total for Mr. Griffin
Percent of class (Griffin)7.9%based on 16,600,113 Shares outstanding
Key Terms
Schedule 13G, Beneficially own, Shared Dispositive Power, Shared Voting Power
4 terms
Schedule 13Gregulatory
"This is being jointly filed by Citadel Advisors LLC ..."
A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.
Beneficially ownregulatory
"Amount beneficially owned: 1. Each of Citadel Advisors LLC ..."
Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.
Shared Dispositive Powerfinancial
"Shared Dispositive Power 1,250,000.00"
Shared Voting Powerfinancial
"Shared Voting Power 1,250,000.00"
Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
Dynamix Corporation
(Name of Issuer)
Class A ordinary shares, par value $0.0001 per share (the "Shares")
(Title of Class of Securities)
G2949D104
(CUSIP Number)
04/07/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
G2949D104
1
Names of Reporting Persons
Citadel Advisors LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,250,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,250,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,250,000.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
7.5 %
12
Type of Reporting Person (See Instructions)
IA, HC, OO
Comment for Type of Reporting Person: 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.
SCHEDULE 13G
CUSIP Number(s):
G2949D104
1
Names of Reporting Persons
Citadel Advisors Holdings LP
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,250,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,250,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,250,000.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
7.5 %
12
Type of Reporting Person (See Instructions)
HC, PN
SCHEDULE 13G
CUSIP Number(s):
G2949D104
1
Names of Reporting Persons
Citadel GP LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,250,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,250,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,250,000.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
7.5 %
12
Type of Reporting Person (See Instructions)
HC, OO
SCHEDULE 13G
CUSIP Number(s):
G2949D104
1
Names of Reporting Persons
Citadel Securities LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
62,566.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
62,566.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
62,566.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
0.4 %
12
Type of Reporting Person (See Instructions)
BD, OO
SCHEDULE 13G
CUSIP Number(s):
G2949D104
1
Names of Reporting Persons
Citadel Securities Group LP
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
62,566.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
62,566.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
62,566.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
0.4 %
12
Type of Reporting Person (See Instructions)
HC, PN
SCHEDULE 13G
CUSIP Number(s):
G2949D104
1
Names of Reporting Persons
Citadel Securities GP LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
62,566.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
62,566.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
62,566.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
0.4 %
12
Type of Reporting Person (See Instructions)
HC, OO
SCHEDULE 13G
CUSIP Number(s):
G2949D104
1
Names of Reporting Persons
Kenneth Griffin
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
1,312,566.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
1,312,566.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
1,312,566.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
7.9 %
12
Type of Reporting Person (See Instructions)
HC, IN
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
Dynamix Corporation
(b)
Address of issuer's principal executive offices:
1980 Post Oak Blvd., Suite 100 PMB 6373 Houston, TX, 77056
Item 2.
(a)
Name of person filing:
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).
(b)
Address or principal business office or, if none, residence:
The address of each of the Reporting Persons is 830 Brickell Plaza, Miami, Florida 33131.
(c)
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.
(d)
Title of class of securities:
Class A ordinary shares, par value $0.0001 per share (the "Shares")
(e)
CUSIP Number(s):
G2949D104
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
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.
(b)
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.
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
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
(ii) Shared power to vote or to direct the vote:
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
(iii) Sole power to dispose or to direct the disposition of:
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
(iv) Shared power to dispose or to direct the disposition of:
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.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
Not Applicable
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
Not Applicable
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
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.
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.
Citadel Advisors LLC
Signature:
/s/ Seth Levy
Name/Title:
Seth Levy, Authorized Signatory
Date:
04/14/2026
Citadel Advisors Holdings LP
Signature:
/s/ Seth Levy
Name/Title:
Seth Levy, Authorized Signatory
Date:
04/14/2026
Citadel GP LLC
Signature:
/s/ Seth Levy
Name/Title:
Seth Levy, Authorized Signatory
Date:
04/14/2026
Citadel Securities LLC
Signature:
/s/ Seth Levy
Name/Title:
Seth Levy, Authorized Signatory
Date:
04/14/2026
Citadel Securities Group LP
Signature:
/s/ Seth Levy
Name/Title:
Seth Levy, Authorized Signatory
Date:
04/14/2026
Citadel Securities GP LLC
Signature:
/s/ Seth Levy
Name/Title:
Seth Levy, Authorized Signatory
Date:
04/14/2026
Kenneth Griffin
Signature:
/s/ Seth Levy
Name/Title:
Seth Levy, attorney-in-fact*
Date:
04/14/2026
Comments accompanying signature: * 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.
Citadel Advisors LLC is reported as beneficially owning 1,250,000 shares, representing 7.5% of the class based on the disclosed outstanding share count. The filing shows this ownership as shared voting and dispositive power.
How many shares does Kenneth Griffin report for DYNX?
Kenneth Griffin is reported as beneficially owning 1,312,566 shares, equal to 7.9% of the class per the filing. The ownership is shown as shared voting and dispositive power across affiliated entities.
What outstanding share count does the filing use for DYNX percentages?
The filing bases percentages on 16,600,113 Shares outstanding, comprising 16,600,000 shares as of March 3, 2026 per the issuer's Form 10-K and 113 shares issuable upon conversion of certain warrants.
Do the disclosures show Citadel or Griffin can vote the shares solely?
No. The filing reports 0 sole voting power for the named Citadel entities and Mr. Griffin; the reported control is shared voting and shared dispositive power over the stated share amounts.
Are Citadel Securities and Citadel Advisors reported as holding the same shares?
The filing lists separate holdings: Citadel Advisors-related entities each report 1,250,000 shares, while Citadel Securities entities report 62,566 shares. The statement explains relationships among the affiliated reporting persons.
