Form D · Hedge Fund

Arrowstreet (Delaware) Custom Alpha Extension Fund Q L.P.

Boston, MA · CIK 0002035788

Offering snapshot reported Apr 30, 2026 · SEC filing

Reported sold: $3.93B
Investors reported: 1
Minimum accepted: $100K
First sale: Nov 1, 2024

Fundraising history

Reported sold

Dates are filing dates, not cash receipt dates. Decreases are reported revisions, not evidence of withdrawals. Separate offering histories are not added together.

What changed?

Latest filing versus its linked predecessor, where available.

No comparable changes in the displayed metrics.

Filing history

Scroll to see all columns →

Filed	Filing type	Reported sold	Change vs linked filing	Investors	Source
Apr 30, 2026	Amendment	$3,933,430,949	$0vs Apr 23, 2025	1	SEC filing
Apr 23, 2025	Amendment	$3,933,430,949	No comparison	1	SEC filing
Oct 16, 2024	Initial	Yet to sell	No comparison	0	SEC filing

Offering details

Securities: Pooled investment fund
Exemptions: 06b, 3C, 3C.1, 3C.7
Duration over one year: Yes
Business combination: No

Sales commissions: $0
Finders' fees: $0
Form D file number: 021-526932

Sales compensation recipients

Scroll to see all columns →

Recipient	CRD	Associated broker-dealer
None	None

Source: Form D, filed Apr 30, 2026. Minimum accepted may differ from a standard advertised minimum.

Fund connections

Each card uses that adviser's latest imported filing. Filing dates can differ; these disclosures do not confirm a current relationship.

Matched by reported Form D file number

ARROWSTREET (DELAWARE) CUSTOM ALPHA EXTENSION FUND Q L.P.

Investment adviser: ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

Gross asset value: $7.48B
Beneficial owners: 2
ADV minimum commitment: $100K

Reported in Form ADV on Apr 22, 2026. Fund assets and beneficial owners measure different things from Form D sales and investors.

Service providers

Fund administrator SS&C TECHNOLOGIES, INC. NEW YORK, New York, United States Investor statements: Yes (provided to all investors) Related to adviser: No Other funds reporting this name →

Auditor ERNST & YOUNG LTD. BOSTON, Massachusetts, United States Other funds reporting this name →

Custodian BNP PARIBAS PARIS, France Related to adviser: No Other funds reporting this name →

Custodian BNP PARIBAS PRIME BROKERAGE INTERNATIONAL, LIMITED DUBLIN, Ireland Related to adviser: No Other funds reporting this name →

Custodian BNP PARIBAS SECURITIES CORP. NEW YORK CITY, New York, United States Related to adviser: No Other funds reporting this name →

Custodian BOFA SECURITIES, INC. NEW YORK CITY, New York, United States Related to adviser: No Other funds reporting this name →

See filing for more → Showing the first 6 providers by role and name. IAPD may show a newer filing.

Provider details

Annual audit: Yes
Prime brokers: Yes
Custodians: Yes
Administrator other than the adviser: Yes
External marketing: No

ERNST & YOUNG LTD.
PCAOB 42

BNP PARIBAS PRIME BROKERAGE INTERNATIONAL, LIMITED
LEI 549300KUN9K9K32C6D97

BNP PARIBAS SECURITIES CORP.
SEC 8-32682

BOFA SECURITIES, INC.
SEC 8-69787

Fund asset history · 2 annual observations

Scroll to see all columns →

Fiscal year	Gross assets	Beneficial owners	ADV filed
2024	$5,705,112,164	2	Mar 28, 2025
2025	$7,481,877,247	2	Mar 30, 2026

Filing source

Form ADV 2097281 · Apr 22, 2026 · Schedule D 7.B.(1), fund 805-7099024783

Reported by ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (CRD 111298).

Other-Than Anual Amendment For Registered Adviser.

Official IAPD profile (latest public filing). Historical values on this page come from the SEC/IAPD filing archive; the public profile may show a newer filing.

People & organizations

Current and past Form D appearances. These existing records do not establish a person's current role or uniquely identify them across issuers.

People and organizations reported in Form D filings
Name	Reported role
Brattle Gp Llc Arrowstreet Capital	Executive
Limited Partnership Arrowstreet Capital	Promoter

Issuer details

Industry: Pooled Investment Fund (See others in industry)

Address:

200 Clarendon Street 30 Th Floor
Boston, MA, 02116