As filed with the U.S. Securities and Exchange Commission on February 9, 2024

Securities Act File No. 333-109980

Investment Company Act File No. 811-21457

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933	☒
Pre-Effective Amendment No.	☐
Post-Effective Amendment No. 56	☒
and/or
REGISTRATION STATEMENT UNDER THE
INVESTMENT COMPANY ACT OF 1940	☒
Amendment No. 58	☒

(Check appropriate box or boxes)

BLACKROCK ALLOCATION TARGET SHARES

(Exact Name of Registrant as Specified in Charter)

100 Bellevue Parkway, Wilmington, Delaware 19809

(Address of Principal Executive Office)

Registrant’s Telephone Number, including Area Code: (800) 882-0052

John M. Perlowski

BLACKROCK ALLOCATION TARGET SHARES

50 Hudson Yards

New York, New York 10001

(Name and Address of Agent for Service)

Copies to:

Counsel for the Fund:
Margery K. Neale, Esq.	Janey Ahn, Esq.
Willkie Farr & Gallagher LLP	BlackRock Advisors, LLC
787 Seventh Avenue	50 Hudson Yards
New York, New York 10019-6099	New York, New York 10001

Continuous

(Approximate Date of Proposed Offering)

It is proposed that this filing will become effective:

☐	immediately upon filing pursuant to paragraph (b)
☒	on February 27, 2024 pursuant to paragraph (b)
☐	60 days after filing pursuant to paragraph (a)(1)
☐	on (date) pursuant to paragraph (a)(1)

☐	75 days after filing pursuant to paragraph (a)(2)
☐	on (date) pursuant to paragraph (a)(2) of Rule 485.
If appropriate, check the following box:
☒	This post-effective amendment designates a new effective date for a previously filed post-effective amendment.
Title of Securities Being Registered: Shares of Beneficial Interest, par value $0.001 per share.
This filing relates solely to BATS: Series I Portfolio.

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Explanatory Note

This Post-Effective Amendment No. 56 under the Securities Act of 1933, as amended (the “Securities Act”) (Amendment No. 58 under the Investment Company Act of 1940, as amended (the “1940 Act”)), to the registration statement on Form N-1A (the “Registration Statement”) of BlackRock Allocation Target Shares (the “Registrant”) is being filed pursuant to paragraph (b)(1)(iii) of Rule 485 under the Securities Act solely for the purpose of delaying, until February 27, 2024, the effectiveness of the registration statement for BATS: Series I Portfolio (the “Fund”), filed in Post-Effective Amendment No. 55 on November 29, 2023, pursuant to paragraph (a) of Rule 485 under the Securities Act.

This Post-Effective Amendment No. 56 incorporates by reference the information contained in Parts A, B and C of Post-Effective Amendment No. 55 to the Registrant’s Registration Statement.

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SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all the requirements for the effectiveness of this Post-Effective Amendment to its Registration Statement pursuant to Rule 485(b)(1)(iii) under the Securities Act of 1933 and has duly caused this Post-Effective Amendment to its Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of New York and the State of New York, on February 9, 2024.

BLACKROCK ALLOCATION TARGET SHARES (REGISTRANT)
ON BEHALF OF
BATS: SERIES I PORTFOLIO
By:	/s/ JOHN M. PERLOWSKI
	(John M. Perlowski,
	President and Chief Executive Officer)

Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment to its Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.

Signature	Title	Date
/s/ JOHN M. PERLOWSKI	Trustee, President and Chief Executive	February 9, 2024
(John M. Perlowski)	Officer (Principal Executive Officer)
/s/ TRENT WALKER	Chief Financial Officer (Principal Financial and Accounting Officer)	February 9, 2024
(Trent Walker)
CYNTHIA L. EGAN*	Trustee
(Cynthia L. Egan)
LORENZO A. FLORES*	Trustee
(Lorenzo A. Flores)
STAYCE D. HARRIS*	Trustee
(Stayce D. Harris)
J. PHILLIP HOLLOMAN*	Trustee
(J. Phillip Holloman)
R. GLENN HUBBARD*	Trustee
(R. Glenn Hubbard)
W. CARL KESTER*	Trustee
(W. Carl Kester)
CATHERINE A. LYNCH*	Trustee
(Catherine A. Lynch)
ARTHUR P. STEINMETZ*	Trustee
(Arthur P. Steinmetz)
ROBERT FAIRBAIRN*	Trustee
(Robert Fairbairn)

*By: /s/ JANEY AHN	February 9, 2024
(Janey Ahn, Attorney-In-Fact)