EDGAR Filing Documents for 0001104659-12-048038

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

SEC Accession No. 0001104659-12-048038

Filing Date

2012-07-09

Accepted

2012-07-09 17:06:18

Documents

Period of Report

2012-04-30

Effectiveness Date

2012-07-09

Document Format Files

Seq	Description	Document	Type	Size
1	N-CSRS	a12-12634_1ncsrs.htm	N-CSRS	853510
2	EX-99.CERT	a12-12634_1ex99dcert.htm	EX-99.CERT	25426
3	EX-99.906CERT	a12-12634_1ex99d906cert.htm	EX-99.906CERT	13665
4	GRAPHIC	j12126342_aa001.jpg	GRAPHIC	6415
5	GRAPHIC	j12126342_aa002.jpg	GRAPHIC	22244
6	GRAPHIC	j12126342_aa003.jpg	GRAPHIC	63070
7	GRAPHIC	j12126342_aa004.jpg	GRAPHIC	14672
	Complete submission text file	0001104659-12-048038.txt		1041884

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		C	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)