# EDGAR Filing Document

**Accession Number:** 0000355437
**File Stem:** 0001410368-26-065010
**Filing Date:** 2026-6
**Character Count:** 6341
**Document Hash:** 12909eb23d6da978fe12f816d76f9295
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001410368-26-065010.hdr.sgml**: 20260624

**ACCESSION NUMBER**: 0001410368-26-065010

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260430

**FILED AS OF DATE**: 20260624

**DATE AS OF CHANGE**: 20260624

**PERIOD START**: 20261031

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** DFA INVESTMENT DIMENSIONS GROUP INC
- **CENTRAL INDEX KEY:** 0000355437

**ORGANIZATION NAME:**
- **EIN:** 363129984
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** NPORT-P
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-03258
- **FILM NUMBER:** 261114381

**BUSINESS ADDRESS:**
- **STREET 1:** 6300 BEE CAVE ROAD
- **STREET 2:** BUILDING ONE
- **CITY:** AUSTIN
- **STATE:** TX
- **ZIP:** 78746
- **BUSINESS PHONE:** (512) 306-7400

**MAIL ADDRESS:**
- **STREET 1:** 6300 BEE CAVE ROAD
- **STREET 2:** BUILDING ONE
- **CITY:** AUSTIN
- **STATE:** TX
- **ZIP:** 78746

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DFA SMALL CO FUND INC
- **DATE OF NAME CHANGE:** 19830621

## Series and Classes Contracts Data

### INTERNATIONAL SMALL COMPANY PORTFOLIO (Series ID: S000000967)

| Class ID   | Class Name                                                  | Ticker Symbol   |
|:---|:---|:---|
| C000002718 | INTERNATIONAL SMALL COMPANY PORTFOLIO - INSTITUTIONAL CLASS | DFISX           |

## Form NPORT-P: Monthly Portfolio Investments Report

### NPORT-P: Part A: General Information

**Item A.1. Information about the Registrant.**

- **a. Name of Registrant:** DFA INVESTMENT DIMENSIONS GROUP INC

- **b. Investment Company Act file number:** 811-03258

- **c. CIK number of Registrant:** 0000355437

- **d. LEI of Registrant:** 549300XGRTBJCE41BD26

- **e. Address and telephone number of Registrant.**

  - **Street Address 1:** 6300 BEE CAVE ROAD

  - **City:** AUSTIN

  - **State:** TX

  - **Foreign country:** US

  - **Zip / Postal Code:** 78746

  - **Telephone number:** 512-306-7400

**Item A.2. Information about the Series.**

- **a. Name of Series:** INTERNATIONAL SMALL COMPANY PORTFOLIO

- **b. EDGAR series identifier (if any):** S000000967

- **c. LEI of Series:** 5493001J4NVI3L3AP896

**Item A.3. Reporting period.**

- **a. Date of fiscal year-end:** 2026-10-31

- **b. Date as of which information is reported:** 2026-04-30

**Item A.4. Final filing**

Does the Fund anticipate that this will be its final filing on Form N-PORT? **No**

### Fund Information

**Total Assets:** $15796791752.06

**Total Liabilities:** $3854786.80

**Net Assets:** $15792936965.26

**Cash Not Reported:** $685228.52

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000002718 | 5.34%                | -9.09%               | 6.00%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $0.00                    | $0.00                                      |
| Month 2  | $0.00                    | $0.00                                      |
| Month 3  | $0.00                    | $0.00                                      |

### Schedule of Portfolio Investments

| Name                         | Title                                                        | Identifiers                                   | Payoff Profile   | Asset Category   | Issuer Category   | Country   |   Balance | Units   | Value (USD)    | % of Net Assets   | Maturity Date   | Coupon Type   | Annualized Rate (%)   | Restricted?   | Fair Value Level   | Lending Status   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| Dimensional Fund Advisors    | THE ASIA PACIFIC SMALL COMPANY SERIES                        | CUSIP: 000000000<br>LEI: 549300CBGM4U9R4DEL16 | Long             | EC               | RF                | US        |  21482163 | NS      | $1544782341.00 | 9.78%             |  |  |  | No            | N/A                | On Loan: No      |
| State Street Global Advisors | State Street Institutional U.S. Government Money Market Fund | CUSIP: 857492706<br>LEI: 549300BZ5TGIFZUZDZ37 | Long             | STIV             | RF                | US        | 175670168 | NS      | $175670168.39  | 1.11%             |  |  |  | No            | 1                  | On Loan: No      |
| Dimensional Fund Advisors    | THE CANADIAN SMALL COMPANY SERIES                            | CUSIP: 000000000<br>LEI: 54930006OMTUF18TBS36 | Long             | EC               | RF                | US        |  64134752 | NS      | $2319753988.00 | 14.69%            |  |  |  | No            | N/A                | On Loan: No      |
| Dimensional Fund Advisors    | THE JAPANESE SMALL COMPANY SERIES                            | CUSIP: 000000000<br>LEI: 549300XCLYJKZX2XQ177 | Long             | EC               | RF                | US        | 106617170 | NS      | $3527962156.00 | 22.34%            |  |  |  | No            | N/A                | On Loan: No      |
| Chicago Mercantile Exchange  | S+P500 EMINI FUT JUN26                                       | CUSIP: 000000000<br>LEI: SNZ2OJLFK8MNNCLQOF39 | N/A              | DE               |  | US        |       422 | NC      | $11102242.31   | 0.07%             |  |  |  | No            | 1                  | On Loan: No      |
| Dimensional Fund Advisors    | THE UNITED KINGDOM SMALL COMPANY SERIES                      | CUSIP: 000000000<br>LEI: 549300FCYEDRJO2L0O02 | Long             | EC               | RF                | US        |  16202329 | NS      | $1737537761.00 | 11.00%            |  |  |  | No            | N/A                | On Loan: No      |
| Dimensional Fund Advisors    | THE CONTINENTAL SMALL COMPANY SERIES                         | CUSIP: 000000000<br>LEI: 549300TTGDINCXXSVF04 | Long             | EC               | RF                | US        |  35253874 | NS      | $6478604369.00 | 41.02%            |  |  |  | No            | N/A                | On Loan: No      |

### Signature

**Date Signed:** 2026-05-19

**Name of Applicant:** DFA INVESTMENT DIMENSIONS GROUP INC

**Signature:** Randy Olson

**Name of Signer:** Randy Olson

**Title:** Vice President