# EDGAR Filing Document

**Accession Number:** 0001026144
**File Stem:** 0001193125-23-048003
**Filing Date:** 2023-2
**Character Count:** 7756
**Document Hash:** d6fa41a89f46b56b40cfe424e341b190
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-048003.hdr.sgml**: 20230224

**ACCESSION NUMBER**: 0001193125-23-048003

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230224

**DATE AS OF CHANGE**: 20230224

**EFFECTIVENESS DATE**: 20230224

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BLACKROCK INDEX FUNDS, INC.
- **CENTRAL INDEX KEY:** 0001026144
- **IRS NUMBER:** 223483675
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-15265
- **FILM NUMBER:** 23663450

**BUSINESS ADDRESS:**
- **STREET 1:** 100 BELLEVUE PARKWAY
- **CITY:** WILMINGTON
- **STATE:** DE
- **ZIP:** 19809
- **BUSINESS PHONE:** 800-441-7762

**MAIL ADDRESS:**
- **STREET 1:** 100 BELLEVUE PARKWAY
- **CITY:** WILMINGTON
- **STATE:** DE
- **ZIP:** 19809

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** MERRILL LYNCH INDEX FUNDS INC
- **DATE OF NAME CHANGE:** 19961031

## Series and Classes Contracts Data

### iShares MSCI EAFE International Index Fund (Series ID: S000003116)

---

|  |  |
|:---|:---|
| Class Name        | Class ID   |
| Investor A        | C000008447 |
| Institutional     | C000008448 |
| Class K           | C000099168 |
| Investor P Shares | C000201956 |

---

### iShares Russell 2000 Small-Cap Index Fund (Series ID: S000003118)

---

|  |  |
|:---|:---|
| Class Name        | Class ID   |
| Investor A        | C000008451 |
| Institutional     | C000008452 |
| Class K           | C000099169 |
| Investor P Shares | C000201957 |

---

## Series and Classes Contracts Data

### iShares MSCI EAFE International Index Fund (Series ID: S000003116)

| Class ID   | Class Name        | Ticker Symbol   |
|:---|:---|:---|
| C000008447 | Investor A        |  |
| C000008448 | Institutional     |  |
| C000099168 | Class K           |  |
| C000201956 | Investor P Shares |  |

### iShares Russell 2000 Small-Cap Index Fund (Series ID: S000003118)

| Class ID   | Class Name        | Ticker Symbol   |
|:---|:---|:---|
| C000008451 | Investor A        |  |
| C000008452 | Institutional     |  |
| C000099169 | Class K           |  |
| C000201957 | Investor P Shares |  |

**BLACKROCK INDEX FUNDS, INC.** 

iShares Russell 2000 Small-Cap Index Fund

iShares MSCI EAFE International Index Fund

(each, a "Fund" and together, the "Funds")

**Supplement dated February 24, 2023 to the Statement of Additional Information ("SAI") of the Funds, dated April 29, 2022, as supplemented to date** 

**Effective on February 8, 2023, the following changes are made to the Funds' SAI:** 

**The section entitled "Management, Advisory and Other Service Arrangements — Information Regarding the Portfolio Managers" is revised as follows:** 

**The first paragraph is deleted in its entirety and replaced with the following:** 

Paul Whitehead, Suzanne Henige, CFA, and Jennifer Hsui, CFA, are the portfolio managers of Master Small Cap Index Series and MSCI EAFE International Index Fund and are jointly and primarily responsible for the day-to-day management of Master Small Cap Index Series and MSCI EAFE International Index Fund. On or about April 14, 2023, Suzanne Henige will no longer serve as a portfolio manager of Master Small Cap Index Series or MSCI EAFE International Index Fund.

**The sub-section entitled "Other Funds and Accounts Managed — Master Small Cap Index Series" is deleted in its entirety and replaced with the following:** 

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | **Number of Other Accounts Managed<br>and Assets by Account Type** | **Number of Other Accounts Managed<br>and Assets by Account Type** | **Number of Other Accounts Managed<br>and Assets by Account Type** | **Number of Other Accounts and Assets<br>for Which Advisory Fee is<br>Performance-Based** | **Number of Other Accounts and Assets<br>for Which Advisory Fee is<br>Performance-Based** | **Number of Other Accounts and Assets<br>for Which Advisory Fee is<br>Performance-Based** |
| <br>**Name of Portfolio<br>Manager** | **Other**<br>**Registered**<br>**Investment**<br>**Companies** | **Other<br>Pooled**<br>**Investment**<br>**Vehicles** | **Other**<br>**Accounts** | **Other**<br>**Registered**<br>**Investment**<br>**Companies** | **Other<br>Pooled**<br>**Investment**<br>**Vehicles** | **Other**<br>**Accounts** |
| Suzanne Henige, CFA<sup>1</sup> | 73<br>$198.59 Billion | 6<br>$5.13 Billion | 0<br>$0 | 0<br>$0 | 0<br>$0 | 0<br>$0 |
| Jennifer Hsui, CFA | 329<br>$2.12 Trillion | 58<br>$85.23 Billion | 44<br>$41.79 Billion | 0<br>$0 | 0<br>$0 | 0<br>$0 |
| Paul Whitehead | 0<br>$0 | 0<br>$0 | 0<br>$0 | 0<br>$0 | 0<br>$0 | 0<br>$0 |

---

<sup>1</sup> On or about April 14, 2023, Suzanne Henige will no longer serve as a portfolio manager of Master Small Cap Index Series.

------

**The sub-section entitled "Other Funds and Accounts Managed — iShares MSCI EAFE International Index Fund" is deleted in its entirety and replaced with the following:** 

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
| | **Number of Other Accounts Managed<br>and Assets by Account Type** | **Number of Other Accounts Managed<br>and Assets by Account Type** | **Number of Other Accounts Managed<br>and Assets by Account Type** | **Number of Other Accounts and Assets<br>for Which Advisory Fee is<br>Performance-Based** | **Number of Other Accounts and Assets<br>for Which Advisory Fee is<br>Performance-Based** | **Number of Other Accounts and Assets<br>for Which Advisory Fee is<br>Performance-Based** |
| <br>**Name of Portfolio<br>Manager** | **Other**<br>**Registered**<br>**Investment**<br>**Companies** | **Other<br>Pooled**<br>**Investment**<br>**Vehicles** | **Other**<br>**Accounts** | **Other**<br>**Registered**<br>**Investment**<br>**Companies** | **Other<br>Pooled**<br>**Investment**<br>**Vehicles** | **Other**<br>**Accounts** |
| Suzanne Henige, CFA<sup>1</sup> | 73<br>$194.68 Billion | 6<br>$5.13 Billion | 0<br>$0 | 0<br>$0 | 0<br>$0 | 0<br>$0 |
| Jennifer Hsui, CFA | 329<br> $2.11 Trillion | 58<br> $85.23 Billion | 44<br> $41.79 Billion | 0<br>$0 | 0<br>0 | 0<br>$0 |
| Paul Whitehead | 0<br>$0 | 0<br>$0 | 0<br>$0 | 0<br>$0 | 0<br>$0 | 0<br>$0 |

---

1 On or about April 14, 2023, Suzanne Henige will no longer serve as a portfolio manager of MSCI EAFE International Index Fund.

**The last sentence of the sub-section entitled "Discretionary Incentive Compensation" is deleted in its entirety and replaced with the following:** 

The performance of each of Mr. Whitehead and Mses. Henige and Hsui is not measured against a specific benchmark. On or about April 14, 2023, Suzanne Henige will no longer serve as a portfolio manager of Master Small Cap Index Series or MSCI EAFE International Index Fund.

**The sub-section entitled "Fund Ownership" is deleted in its entirety and replaced with the following:** 

As of December 31, 2021, the end of each Fund's most recently completed fiscal year, the dollar range of securities beneficially owned by the portfolio managers in the Funds is shown below:

---

| | | |
|:---|:---|:---|
| **Portfolio Manager** | **Funds Managed** | **Dollar Range of Equity<br>Securities of the Funds<br>Beneficially Owned** |
| Paul Whitehead | Russell 2000 Small-Cap Index Fund<br> MSCI EAFE International Index Fund |  |
| Suzanne Henige, CFA<sup>1</sup> | Russell 2000 Small-Cap Index Fund<br> MSCI EAFE International Index Fund |  |
| Jennifer Hsui, CFA | Russell 2000 Small-Cap Index Fund<br> MSCI EAFE International Index Fund |  |

---

1 On or about April 14, 2023, Suzanne Henige will no longer serve as a portfolio manager of the Fund.

**Shareholders should retain this Supplement for future reference.** 

SAI-INDEX-0223SUP