EDGAR Filing Documents for 0001193125-13-286246

Form N-CSRS - Certified Shareholder Report, Semi-Annual:

SEC Accession No. 0001193125-13-286246

Filing Date

2013-07-10

Accepted

2013-07-09 17:40:27

Documents

Period of Report

2013-04-30

Effectiveness Date

2013-07-10

Document Format Files

Seq	Description	Document	Type	Size
1	MORGAN STANLEY MORTGAGE SECURITIES TRUST	d543354dncsrs.htm	N-CSRS	833032
2	CERTIFICATE (302)	d543354dex99cert.htm	EX-99.CERT	18756
3	CERTIFICATE (906)	d543354dex99906ct.htm	EX-99.906CT	9038
4	GRAPHIC	g543354logo_01ar.jpg	GRAPHIC	2240
5	GRAPHIC	g543354logo_01statpro.jpg	GRAPHIC	5758
6	GRAPHIC	g543354logo_07.jpg	GRAPHIC	46826
	Complete submission text file	0001193125-13-286246.txt		938901

Series and Classes/Contracts Information:

Existing
	Status	Name	Ticker Symbol
CIK 0000806564
Series S000002467		Morgan Stanley Mortgage Securities Trust
Class/Contract C000006611		A	MTGAX
Class/Contract C000006612		B	MTGBX
Class/Contract C000006613		L	MTGCX
Class/Contract C000006614		I	MTGDX

Mailing Address 522 FIFTH AVENUE NEW YORK NY 10036

Business Address 522 FIFTH AVENUE NEW YORK NY 10036 800-869-6397

MORGAN STANLEY MORTGAGE SECURITIES TRUST (Filer) CIK: 0000806564 (see all company filings)