EDGAR Filing Documents for 0000932471-16-014107

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

SEC Accession No. 0000932471-16-014107

Filing Date

2016-08-26

Accepted

2016-08-26 08:57:23

Documents

Period of Report

2016-06-30

Effectiveness Date

2016-08-26

Document Format Files

Seq	Description	Document	Type	Size
1		institutionalindex_final.htm	N-CSRS	2763132
2		institutionalindexfundsx10x1.jpg	GRAPHIC	8466
3		institutionalindexfundsx1x1.jpg	GRAPHIC	25429
4		institutionalindexfundsx36x1.jpg	GRAPHIC	2794
5		institutionalindexfundsx4x1.jpg	GRAPHIC	2632
6		institutionalindexfundsx7x1.jpg	GRAPHIC	2618
7		institutionalindexfundsx8x1.jpg	GRAPHIC	3830
8		insttotalstockmarketx10x1.jpg	GRAPHIC	10740
9		insttotalstockmarketx1x1.jpg	GRAPHIC	25060
10		insttotalstockmarketx4x1.jpg	GRAPHIC	2934
11		insttotalstockmarketx64x1.jpg	GRAPHIC	2760
12		insttotalstockmarketx8x1.jpg	GRAPHIC	2666
13		insttotalstockmarketx9x1.jpg	GRAPHIC	4039
14		institutionalindex_cert302.htm	EX-31	18353
15		institutionalindex_cert906.htm	EX-32	13976
	Complete submission text file	0000932471-16-014107.txt		2928826

Series and Classes/Contracts Information:

Existing
	Status	Name	Ticker Symbol
CIK 0000862084
Series S000002853		Vanguard Institutional Index Fund
Class/Contract C000007825		Institutional Shares	VINIX
Class/Contract C000007826		Institutional Plus Shares	VIIIX
	Status	Name	Ticker Symbol
CIK 0000862084
Series S000002855		Vanguard Institutional Total Stock Market Index Fund
Class/Contract C000007828		Institutional Shares	VITNX
Class/Contract C000007829		Institutional Plus Shares	VITPX

Mailing Address PO BOX 2600 V26 VALLEY FORGE PA 19482

Business Address PO BOX 2600 V26 VALLEY FORGE PA 19482 6106691000

VANGUARD INSTITUTIONAL INDEX FUNDS (Filer) CIK: 0000862084 (see all company filings)