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. 161 | [X] | |
| and | ||
| REGISTRATION STATEMENT (NO. 811-02652) UNDER THE INVESTMENT COMPANY ACT | ||
| OF 1940 | ||
| AMENDMENT NO. 162 | [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 October 27, 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. 161 under the Securities Act of 1933, as amended (the Securities | |
| Act) (Amendment No. 162 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 October 27, 2017, the pending effective date of the Trusts 160th Post- | |
| Effective Amendment. By way of further background: | |
| | Post-Effective Amendment No. 160 was filed under Rule 485(b)(1)(iii) on August 31, 2017, for |
| the sole purpose of extending to September 29, 2017, the then-pending effective date of Post- | |
| Effective Amendment No. 159. | |
| | Post-Effective Amendment No. 159 was filed under Rule 485(b)(1)(iii) on August 2, 2017, for the |
| sole purpose of extending to September 1, 2017, the then-pending effective date of Post- | |
| Effective Amendment No. 157. | |
| | Post-Effective Amendment No. 157 was filed under Rule 485(b)(1)(iii) on July 5, 2017, for the |
| sole purpose of extending to August 4, 2017, the then-pending effective date of Post-Effective | |
| Amendment No. 156. | |
| | Post-Effective Amendment No. 156 was filed under Rule 485(b)(1)(iii) on June 6, 2017, for the |
| sole purpose of extending to July 6, 2017, the then-pending effective date of Post-Effective | |
| Amendment No. 154. | |
| | Post-Effective Amendment No. 154 was filed under Rule 485(b)(1)(iii) on May 8, 2017, for the |
| sole purpose of extending to June 7, 2017, the then-pending effective date of Post-Effective | |
| Amendment No. 152. | |
| | Post-Effective Amendment No. 153 was filed under Rule 485(b) on April 26, 2017, to provide |
| the annual update to the Trusts Registration Statement. | |
| | Post-Effective Amendment No. 152 was filed under Rule 485(b)(1)(iii) on April 10, 2017, for the |
| sole purpose of extending to May 10, 2017, the then-pending effective date of Post-Effective | |
| Amendment No. 151. | |
| | Post-Effective Amendment No. 151 was filed under Rule 485(b)(1)(iii) on March 10, 2017, for |
| the sole purpose of extending to April 11, 2017, the then-pending effective date of Post- | |
| Effective Amendment No. 150. | |
| | Post-Effective Amendment 150 was filed under Rule 485(a)(1) on January 11, 2017, for the |
| purpose of adding 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. | |
| | 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. | |
| This Post-Effective Amendment No. 161 incorporates by reference the information contained in Parts | |
| A, B, and C of Post-Effective AmendmentNo. 160 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 28th day of September, 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 | September 28, 2017 |
| Officer | ||
| F. William McNabb III | ||
| /S/ EMERSON U. FULLWOOD* | Trustee | September 28, 2017 |
| Emerson U. Fullwood | ||
| /S/ RAJIV L. GUPTA* | Trustee | September 28, 2017 |
| RAJIV L. GUPTA | ||
| /S/ AMY GUTMANN* | Trustee | September 28, 2017 |
| Amy Gutmann | ||
| /S/ JOANN HEFFERNAN HEISEN* | Trustee | September 28, 2017 |
| JoAnn Heffernan Heisen | ||
| /S/ F. JOSEPH LOUGHREY* | Trustee | September 28, 2017 |
| F. Joseph Loughrey | ||
| /S/ MARK LOUGHRIDGE* | Trustee | September 28, 2017 |
| Mark Loughridge | ||
| /S/ SCOTT C. MALPASS* | Trustee | September 28, 2017 |
| Scott C. Malpass | ||
| /S/ ANDRÉ F. PEROLD* | Trustee | September 28, 2017 |
| André F. Perold | ||
| /S/ PETER F. VOLANAKIS* | Trustee | September 28, 2017 |
| Peter F. Volanakis | ||
| /S/ THOMAS J. HIGGINS* | Chief Financial Officer | September 28, 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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