AQR holds 4.83% of StoneBridge Acquisition II

AQR Capital Management, LLC and its affiliates report beneficial ownership of 295,988 Class A ordinary shares of StoneBridge Acquisition II Corp, representing 4.83% of the class as of 12/31/2025.

Accepted by SEC EDGAR 02/11/2026 - 10:04 AM EST Learn about SEC filing dates

Rhea-AI Filing Summary

AQR Capital Management, LLC and its affiliates report beneficial ownership of 295,988 Class A ordinary shares of StoneBridge Acquisition II Corp, representing 4.83% of the class as of 12/31/2025.

The shares are held with shared voting and dispositive power among AQR Capital Management, LLC, AQR Capital Management Holdings, LLC, and AQR Arbitrage, LLC. Each reports zero sole voting or dispositive power. The firms certify the position was acquired and is held in the ordinary course of business and not for the purpose of changing or influencing control of the company.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stake does AQR hold in StoneBridge Acquisition II Corp (APAC)?

AQR entities collectively report beneficial ownership of 295,988 Class A ordinary shares of StoneBridge Acquisition II Corp, equal to 4.83% of the class. This ownership is reported as of December 31, 2025, with shared voting and dispositive power among the AQR affiliates.

Which AQR entities are reporting ownership in StoneBridge Acquisition II Corp (APAC)?

The filing lists three reporting persons: AQR Capital Management, LLC, AQR Capital Management Holdings, LLC, and AQR Arbitrage, LLC. All three are organized in the United States and each reports the same 295,988 shares with shared voting and shared dispositive power over StoneBridge Acquisition II Corp stock.

Is AQR’s 4.83% position in APAC a passive investment?

Yes. The certifying signatory states the securities were acquired and are held in the ordinary course of business, not for changing or influencing control of StoneBridge Acquisition II Corp. The filing specifies the holdings are not in connection with any control-related transaction, other than limited nomination activities referenced in the rule.

What voting and dispositive powers does AQR report over APAC shares?

Each AQR reporting entity discloses zero sole voting and zero sole dispositive power, but 295,988 shares of shared voting power and 295,988 shares of shared dispositive power. This means decisions to vote or sell the StoneBridge Acquisition II Corp shares are shared among the affiliated AQR entities, rather than controlled individually.

Why does the APAC Schedule 13G/A mention ownership of 5 percent or less?

Item 5 states that the position represents ownership of 5 percent or less of the class. With 295,988 Class A ordinary shares, AQR reports holding 4.83% of StoneBridge Acquisition II Corp. This confirms the stake is below the 5% threshold often watched for significant shareholders.

Who signed the AQR Schedule 13G/A for StoneBridge Acquisition II Corp (APAC)?

The filing is signed by Henry Parkin as Authorized Signatory for the AQR entities, dated February 11, 2026. An exhibit also confirms that AQR Capital Management Holdings, LLC, AQR Capital Management, LLC, and AQR Arbitrage, LLC agree the Schedule 13G/A is filed on behalf of each party.

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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

StoneBridge Acquisition II Corp

(Name of Issuer)

Class A Ordinary Shares, par value $0.0001 per share

(Title of Class of Securities)

G85096108

(CUSIP Number)

12/31/2025

(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. G85096108

1

Names of Reporting Persons

AQR Capital Management, 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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 295,988.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 295,988.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

295,988.00

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)

4.83 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

CUSIP No. G85096108

1

Names of Reporting Persons

AQR Capital Management 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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 295,988.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 295,988.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

295,988.00

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)

4.83 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

CUSIP No. G85096108

1

Names of Reporting Persons

AQR Arbitrage, 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

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 295,988.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 295,988.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

295,988.00

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)

4.83 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: StoneBridge Acquisition II Corp
(b)	Address of issuer's principal executive offices: ONE WORLD TRADE CENTER, SUITE 8500, NEW YORK, NEW YORK 10007
Item 2.
(a)	Name of person filing: AQR Capital Management, LLC AQR Capital Management Holdings, LLC AQR Arbitrage, LLC
(b)	Address or principal business office or, if none, residence: ONE GREENWICH PLAZA SUITE 130 Greenwich, Connecticut 06830
(c)	Citizenship: AQR Capital Management, LLC - UNITED STATES AQR Capital Management Holdings, LLC - UNITED STATES AQR Arbitrage, LLC - UNITED STATES
(d)	Title of class of securities: Class A Ordinary Shares, par value $0.0001 per share
(e)	CUSIP No.: G85096108
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: 295,988
(b)	Percent of class: 4.83 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: AQR Capital Management, LLC - 0 AQR Capital Management Holdings, LLC - 0 AQR Arbitrage, LLC - 0
	(ii) Shared power to vote or to direct the vote: AQR Capital Management, LLC - 295,988 AQR Capital Management Holdings, LLC - 295,988 AQR Arbitrage, LLC - 295,988
	(iii) Sole power to dispose or to direct the disposition of: AQR Capital Management, LLC - 0 AQR Capital Management Holdings, LLC - 0 AQR Arbitrage, LLC - 0
	(iv) Shared power to dispose or to direct the disposition of: AQR Capital Management, LLC - 295,988 AQR Capital Management Holdings, LLC - 295,988 AQR Arbitrage, LLC - 295,988
Item 5.	Ownership of 5 Percent or Less of a Class.
	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.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Item 2(a) above.
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 acquired and are held in the ordinary course of business and 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.

AQR Capital Management, LLC

Signature:	Henry Parkin
Name/Title:	Authorized Signatory
Date:	02/11/2026

AQR Capital Management Holdings, LLC

Signature:	Henry Parkin
Name/Title:	Authorized Signatory
Date:	02/11/2026

AQR Arbitrage, LLC

Signature:	Henry Parkin
Name/Title:	Authorized Signatory
Date:	02/11/2026

Exhibit Information

AQR Capital Management Holdings, LLC, AQR Capital Management, LLC, and AQR Arbitrage, LLC hereby agree that this Schedule 13G is filed on behalf of each of the parties. AQR Capital Management, LLC is a wholly owned subsidiary of AQR Capital Management Holdings, LLC. AQR Arbitrage, LLC is deemed to be controlled by AQR Capital Management, LLC.