Form 485BXT VANGUARD INDEX FUNDS
| SECURITIES AND EXCHANGE COMMISSION | ||
| Washington, D.C. 20549 | ||
| Form N-1A | ||
| REGISTRATION STATEMENT (NO. 2-56846) UNDER | ||
| THE SECURITIES ACT OF 1933 | [X] | |
| PRE-EFFECTIVE AMENDMENT NO. | [ ] | |
| POST-EFFECTIVE AMENDMENT NO. 151 | [X] | |
| and | ||
| REGISTRATION STATEMENT (NO. 811-2652) UNDER THE INVESTMENT COMPANY ACT | ||
| OF 1940 | ||
| AMENDMENT NO. 152 | [X] | |
| VANGUARD 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) | ||
| [ ] | immediately upon filing pursuant to paragraph (b) | |
| [x] | on April 11, 2017, 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: | ||
| [X] | This post-effective amendment designates a new effective date for a | |
| previously filed post-effective amendment. | ||
| Explanatory Note |
| This Post Effective Amendment No. 151 under the Securities Act of 1933, as amended (the Securities |
| Act) (Amendment No. 71 under the Investment Company Act of 1940, as amended (the 1940 Act) to |
| the registration statement on Form N 1A (the Registration Statement) of Vanguard Index Funds (the |
| Trust) is being filed pursuant to paragraph (b)(1)(iii) of Rule 485 under the Securities Act solely for the |
| purpose of delaying, until April 11, 2017, the pending effective date of the Trusts 150th Post Effective |
| Amendment. By way of further background: |
| · Post Effective Amendment No. 149 was filed under Rule 485(a)(1) on December 23,2016, for the |
| purposes of (1) adding Institutional Shares and Institutional Plus Shares of Vanguard 500 Index |
| Fund, a series of the Trust, and (2) effecting a number of non material editorial changes. Post |
| Effective Amendment 150 was filed on January 11, 2017 to add the expense ratios for the |
| Institutional Shares and Institutional Plus Shares of Vanguard 500 Index Fund. Post Effective |
| Amendment 150 originally requested that the Amendment become effective on March 13, |
| 2017. |
| This Post Effective Amendment No. 151 incorporates by reference the information contained in Parts A, |
| B, and C of Post Effective Amendment No. 150 to the Registrants Registration Statement. |
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 10th day of March, 2017.
VANGUARD INDEX FUNDS
BY:___________/s/ F. William McNabb III*_________
F. William McNabb III
Chairman and Chief Executive Officer
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 and Chief Executive | March 10, 2017 |
| Officer | ||
| F. William McNabb III | ||
| /S/ EMERSON U. FULLWOOD* | Trustee | March 10, 2017 |
| Emerson U. Fullwood | ||
| /S/ RAJIV L. GUPTA* | Trustee | March 10, 2017 |
| RAJIV L. GUPTA | ||
| /S/ AMY GUTMANN* | Trustee | March 10, 2017 |
| Amy Gutmann | ||
| /S/ JOANN HEFFERNAN HEISEN* | Trustee | March 10, 2017 |
| JoAnn Heffernan Heisen | ||
| /S/ F. JOSEPH LOUGHREY* | Trustee | March 10, 2017 |
| F. Joseph Loughrey | ||
| /S/ MARK LOUGHRIDGE* | Trustee | March 10, 2017 |
| Mark Loughridge | ||
| /S/ SCOTT C. MALPASS* | Trustee | March 10, 2017 |
| Scott C. Malpass | ||
| /S/ ANDRÉ F. PEROLD* | Trustee | March 10, 2017 |
| André F. Perold | ||
| /S/ PETER F. VOLANAKIS* | Trustee | March 10, 2017 |
| Peter F. Volanakis | ||
| /S/ THOMAS J. HIGGINS* | Chief Financial Officer | March 10, 2017 |
| Thomas J. Higgins | ||
| *By: /s/ Anne E. Robinson |
Anne E. Robinson, pursuant to a Power of Attorney filed on October 4, 2016, see File Number 33-32548, Incorporated by Reference.
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