EDGAR Filing Documents for 0001193125-12-453956

Form 497 - Definitive materials

SEC Accession No. 0001193125-12-453956

Filing Date

2012-11-06

Accepted

2012-11-06 13:19:09

Documents

Filing Date Changed

2012-11-06

Effectiveness Date

2012-11-06

Document Format Files

Seq	Description	Document	Type	Size
1	BLACKROCK U.S. MORTGAGE PORTFOLIO	d426558d497.htm	497	4631
8	GRAPHIC	g426558g51l13.jpg	GRAPHIC	17189
	Complete submission text file	0001193125-12-453956.txt		1375644

Data Files

Seq	Description	Document	Type	Size
2	XBRL INSTANCE DOCUMENT	mas2-20121023.xml	EX-101.INS	57080
3	XBRL TAXONOMY EXTENSION SCHEMA	mas2-20121023.xsd	EX-101.SCH	8308
4	XBRL TAXONOMY EXTENSION CALCULATION LINKBASE	mas2-20121023_cal.xml	EX-101.CAL	4017
5	XBRL TAXONOMY EXTENSION DEFINITION LINKBASE	mas2-20121023_def.xml	EX-101.DEF	236485
6	XBRL TAXONOMY EXTENSION LABEL LINKBASE	mas2-20121023_lab.xml	EX-101.LAB	145276
7	XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE	mas2-20121023_pre.xml	EX-101.PRE	167292

Series and Classes/Contracts Information:

Existing
	Status	Name	Ticker Symbol
CIK 0001323737
Series S000002988		BlackRock U.S.Mortgage Portfolio
Class/Contract C000008217		U.S. Mortgage Portfolio
Class/Contract C000094139		Investor A Shares
Class/Contract C000094140		Investor C Shares

Mailing Address 100 BELLEVUE PARKWAY WILMINGTON DE 19809

Business Address 100 BELLEVUE PARKWAY WILMINGTON DE 19809 800-441-7762

Managed Account Series (Filer) CIK: 0001323737 (see all company filings)