Shay Capital Files Schedule 13G Disclosing 5.4% DMYY Position

Rhea-AI Filing Summary

dMY Squared Technology Group, Inc. received a Schedule 13G disclosing that Shay Capital LLC and Shay Capital Holdings LLC each beneficially own 125,359 shares of the issuer's Class A common stock, representing 5.4% of the class. The filers list their principal business address as 280 Park Avenue, 5th Floor West, New York, NY 10017, and the issuer's principal executive office as 80 North Town Center Drive, Suite 100, Las Vegas, NV 89144. The filing includes a joint filing agreement as an exhibit and a certification that the holdings were not acquired to influence control of the company. Signatures are dated 10/03/2025.

Positive

• 125,359 shares beneficially owned by each reporting person, representing 5.4% of the Class A shares
• Joint Filing Agreement included as Exhibit 1, clarifying coordinated reporting

Negative

• None.

Insights

Equity Ownership Specialist

Shay Capital reports a >5% stake in DMYY, a reportable ownership threshold.

The filing shows each reporting entity beneficially owns 125,359 shares, equal to 5.4% of Class A common stock. Ownership above 5% triggers public disclosure requirements and can draw investor attention to the holders and potential voting influence.

The statement also certifies that the position was not acquired to change control and includes a joint filing agreement, indicating coordinated reporting rather than a disclosed group seeking control.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

dMY Squared Technology Group, Inc.

(Name of Issuer)

Class A Common Stock, par value $0.0001 per share

(Title of Class of Securities)

233276104

(CUSIP Number)

09/26/2025

(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)

SCHEDULE 13G

CUSIP No. 233276104

1

Names of Reporting Persons

Shay Capital 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 125,359.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 125,359.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

125,359.00

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)

5.4 %

12

Type of Reporting Person (See Instructions)

OO

SCHEDULE 13G

CUSIP No. 233276104

1

Names of Reporting Persons

Shay Capital Holdings 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 125,359.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 125,359.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

125,359.00

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)

5.4 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: dMY Squared Technology Group, Inc.
(b)	Address of issuer's principal executive offices: 80 North Town Center Drive, Suite 100, Las Vegas, NEVADA, 89144.
Item 2.
(a)	Name of person filing: Shay Capital LLC Shay Capital Holdings LLC Each a "Filer".
(b)	Address or principal business office or, if none, residence: The principal business address of each Filer is 280 Park Avenue, 5th Floor West, New York, NY 10017.
(c)	Citizenship: Shay Capital LLC and Shay Capital Holdings LLC - Delaware
(d)	Title of class of securities: Class A Common Stock, par value $0.0001 per share
(e)	CUSIP No.: 233276104
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: See Item 9 of the cover page for each Filer.
(b)	Percent of class: See Item 11 of the cover page for each Filer.
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: See Item 5 of the cover page for each Filer.
	(ii) Shared power to vote or to direct the vote: See Item 6 of the cover page for each Filer.
	(iii) Sole power to dispose or to direct the disposition of: See Item 7 of the cover page for each Filer.
	(iv) Shared power to dispose or to direct the disposition of: See Item 8 of the cover page for each Filer.
Item 5.	Ownership of 5 Percent or Less of a Class.
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.

Shay Capital LLC

Signature:	Elan Foxman
Name/Title:	Chief Financial Officer
Date:	10/03/2025

Shay Capital Holdings LLC

Signature:	Elan Foxman
Name/Title:	Chief Financial Officer
Date:	10/03/2025

Exhibit Information

Exhibit 1: Joint Filing Agreement

FAQ

What stake did Shay Capital report in DMYY?

The filers reported beneficial ownership of 125,359 shares, equal to 5.4% of DMYY's Class A common stock.

Which entities filed the Schedule 13G for DMYY?

The filing was made by Shay Capital LLC and Shay Capital Holdings LLC.

When were the signatures on the Schedule 13G dated?

The signatures are dated 10/03/2025.

What addresses are listed for the filer and issuer?

Filers' principal business address: 280 Park Avenue, 5th Floor West, New York, NY 10017. Issuer address: 80 North Town Center Drive, Suite 100, Las Vegas, NV 89144.

Did the filers state the holdings were intended to influence control?

No. The certification states the securities were not acquired or held to change or influence control of the issuer.