Form 485BPOS VANGUARD INSTITUTIONAL
| SECURITIES AND EXCHANGE COMMISSION | ||
| Washington, D.C. 20549 | ||
| Form N-1A | ||
| REGISTRATION STATEMENT (NO. 33-34494) UNDER | ||
| THE SECURITIES ACT OF 1933 | [X] | |
| PRE-EFFECTIVE AMENDMENT NO. | [ ] | |
| POST-EFFECTIVE AMENDMENT NO. 72 | [X] | |
| and | ||
| REGISTRATION STATEMENT (NO. 811-06093) UNDER THE INVESTMENT COMPANY ACT | ||
| OF 1940 | ||
| AMENDMENT NO. 73 | [X] | |
| VANGUARD INSTITUTIONAL INDEX FUNDS | ||
| (Exact Name of Registrant as Specified in Declaration of Trust) | ||
| P.O. Box 2600, Valley Forge, PA 19482 | ||
| (Address of Principal Executive Office) | ||
| Registrants Telephone Number (610) 669-1000 | ||
| Anne E. Robinson, Esquire | ||
| P.O. Box 876 | ||
| Valley Forge, PA 19482 | ||
| Approximate Date of Proposed Public Offering: | ||
| It is proposed that this filing will become effective (check appropriate box) | ||
| [X] | immediately upon filing pursuant to paragraph (b) | |
| [ ] | on (date) pursuant to paragraph (b) | |
| [ ] | 60 days after filing pursuant to paragraph (a)(1) | |
| [ ] | on (date) pursuant to paragraph (a)(1) | |
| [ ] | 75 days after filing pursuant to paragraph (a)(2) | |
| [ ] | on (date) pursuant to paragraph (a)(2) of rule 485 | |
| If appropriate, check the following box: | ||
| [ ] | This post-effective amendment designates a new effective date for a | |
| previously filed post-effective amendment. | ||
| SIGNATURES | ||
| Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the | ||
| Registrant hereby certifies that it meets all requirements for effectiveness of this Registration Statement | ||
| pursuant to Rule 485(b) under the Securities Act of 1933 and has duly caused this Registration Statement | ||
| to be signed on its behalf by the undersigned, thereunto duly authorized, in the Town of Valley Forge and | ||
| the Commonwealth of Pennsylvania, on the 17th day of May, 2018. | ||
| VANGUARD INSTITUTIONAL INDEX FUNDS | ||
| BY: /s/ Mortimer J. Buckley* | ||
| Mortimer J. Buckley | ||
| Chief Executive Officer, President, and Trustee | ||
| Pursuant to the requirements of the Securities Act of 1933, this Post-Effective Amendment to the | ||
| Registration Statement has been signed below by the following persons in the capacities and on the date | ||
| indicated: | ||
| Signature | Title | Date |
| /s/ F. William McNabb III* | Chairman of the Board of | May 17, 2018 |
| Trustees | ||
| F. William McNabb III | ||
| /s/ Mortimer J. Buckley* | Chief Executive Officer, | May 17, 2018 |
| President, and Trustee | ||
| Mortimer J. Buckley | ||
| /s/ Emerson U. Fullwood* | Trustee | May 17, 2018 |
| Emerson U. Fullwood | ||
| /s/ Amy Gutmann* | Trustee | May 17, 2018 |
| Amy Gutmann | ||
| /s/ JoAnn Heffernan Heisen* | Trustee | May 17, 2018 |
| JoAnn Heffernan Heisen | ||
| /s/ F. Joseph Loughrey* | Trustee | May 17, 2018 |
| F. Joseph Loughrey | ||
| /s/ Mark Loughridge* | Trustee | May 17, 2018 |
| Mark Loughridge | ||
| /s/ Scott C. Malpass* | Trustee | May 17, 2018 |
| Scott C. Malpass | ||
| /s/ Deanna Mulligan* | Trustee | May 17, 2018 |
| Deanna Mulligan | ||
| /s/ André F. Perold* | Trustee | May 17, 2018 |
| André F. Perold | ||
| /s/ Sarah Bloom Raskin* | Trustee | May 17, 2018 |
| Sarah Bloom Raskin | ||
| /s/ Peter F. Volanakis* | Trustee | May 17, 2018 |
| Peter F. Volanakis | ||
| /s/ Thomas J. Higgins* | Chief Financial Officer | May 17, 2018 |
| Thomas J. Higgins | ||
| *By: /s/ Anne E. Robinson | ||
| Anne E. Robinson, pursuant to a Power of Attorney filed on January 18, 2018, see File Number 33-32216, Incorporated | ||
| by Reference. | ||
| INDEX TO EXHIBITS | |
| XBRL Instance Document | Ex-101.INS |
| XBRL Taxonomy Extension Schema Document | Ex-101.SCH |
| XBRL Taxonomy Extension Calculation Linkbase Document | Ex-101.CAL |
| XBRL Taxonomy Extension Definition Linkbase Document. | Ex-101.DEF |
| XBRL Taxonomy Extension Labels Linkbase Document | Ex-101.LAB |
| XBRL Taxonomy Extension Presentation Linkbase Document | Ex-101.PRE |
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