EDGAR Filing Documents for 0001193125-12-419556

Form 497 - Definitive materials:

SEC Accession No. 0001193125-12-419556

Filing Date

2012-10-10

Accepted

2012-10-10 12:26:48

Documents

Filing Date Changed

2012-10-10

Effectiveness Date

2012-10-10

Document Format Files

Seq	Description	Document	Type	Size
1	FORM 497	d419162d497.htm	497	7184
	Complete submission text file	0001193125-12-419556.txt		1635514

Data Files

Seq	Description	Document	Type	Size
2	XBRL INSTANCE DOCUMENT	tit2-20121002.xml	EX-101.INS	218644
3	XBRL TAXONOMY EXTENSION SCHEMA	tit2-20121002.xsd	EX-101.SCH	9280
4	XBRL TAXONOMY EXTENSION CALCULATION LINKBASE	tit2-20121002_cal.xml	EX-101.CAL	4806
5	XBRL TAXONOMY EXTENSION DEFINITION LINKBASE	tit2-20121002_def.xml	EX-101.DEF	241806
6	XBRL TAXONOMY EXTENSION LABEL LINKBASE	tit2-20121002_lab.xml	EX-101.LAB	141921
7	XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE	tit2-20121002_pre.xml	EX-101.PRE	169281

Series and Classes/Contracts Information:

Existing
	Status	Name	Ticker Symbol
CIK 0000816153
Series S000011851		Thornburg Investment Income Builder Fund
Class/Contract C000032380		Thornburg Investment Income Builder Fund - Class A	TIBAX
Class/Contract C000032381		Thornburg Investment Income Builder Fund - Class C	TIBCX
Class/Contract C000032382		Thornburg Investment Income Builder Fund - Class I	TIBIX
	Status	Name	Ticker Symbol
CIK 0000816153
Series S000020097		Thornburg Strategic Income Fund
Class/Contract C000056389		Thornburg Strategic Income Fund - Class A	TSIAX
Class/Contract C000056390		Thornburg Strategic Income Fund - Class C	TSICX
Class/Contract C000056391		Thornburg Strategic Income Fund - Class I	TSIIX

Mailing Address 2300 NORTH RIDGETOP ROAD SANTA FE NM 87506-8361

Business Address 2300 NORTH RIDGETOP ROAD SANTA FE NM 87506-8361 5059840200

THORNBURG INVESTMENT TRUST (Filer) CIK: 0000816153 (see all company filings)