# EDGAR Filing Document

**Accession Number:** 0000355437
**File Stem:** 0002071844-26-000473
**Filing Date:** 2026-5
**Character Count:** 11866
**Document Hash:** 1518315147d66f3bfdc3038da2769dff
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0002071844-26-000473.hdr.sgml**: 20260506

**ACCESSION NUMBER**: 0002071844-26-000473

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260506

**DATE AS OF CHANGE**: 20260505

**EFFECTIVENESS DATE**: 20260506

**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:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-73948
- **FILM NUMBER:** 26945041

**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
**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** DIMENSIONAL INVESTMENT GROUP INC
- **CENTRAL INDEX KEY:** 0000861929

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-33980
- **FILM NUMBER:** 26945042

**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:** DIMENSIONAL INVESTMENT GROUP INC/
- **DATE OF NAME CHANGE:** 19930712

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DIMENSIONAL INVESTMENT GROUP INC
- **DATE OF NAME CHANGE:** 19930712

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** DFA US LARGE CAP INC
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### U.S. MICRO CAP PORTFOLIO (Series ID: S000000948)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                     | Ticker Symbol | Class ID   |
| U.S. MICRO CAP PORTFOLIO - INSTITUTIONAL CLASS | DFSCX         | C000002699 |
| ETF Class                                      | nan           | C000268961 |

---

### DFA REAL ESTATE SECURITIES PORTFOLIO (Series ID: S000000949)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                                 | Ticker Symbol | Class ID   |
| DFA REAL ESTATE SECURITIES PORTFOLIO - INSTITUTIONAL CLASS | DFREX         | C000002700 |
| ETF Class                                                  | nan           | C000268962 |

---

### U.S. Targeted Value Portfolio (Series ID: S000000970)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                          | Ticker Symbol | Class ID   |
| U.S. Targeted Value Portfolio - Institutional Class | DFFVX         | C000002721 |
| ETF Class                                           | nan           | C000268963 |

---

### U.S. SMALL CAP PORTFOLIO (Series ID: S000000971)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                     | Ticker Symbol | Class ID   |
| U.S. SMALL CAP PORTFOLIO - INSTITUTIONAL CLASS | DFSTX         | C000002722 |
| ETF Class                                      | nan           | C000268964 |

---

### U.S. CORE EQUITY 1 PORTFOLIO (Series ID: S000000979)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                         | Ticker Symbol | Class ID   |
| U.S. CORE EQUITY 1 PORTFOLIO - INSTITUTIONAL CLASS | DFEOX         | C000002730 |
| ETF Class                                          | nan           | C000268965 |

---

### U.S. CORE EQUITY 2 PORTFOLIO (Series ID: S000000980)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                         | Ticker Symbol | Class ID   |
| U.S. CORE EQUITY 2 PORTFOLIO - INSTITUTIONAL CLASS | DFQTX         | C000002731 |
| ETF Class                                          | nan           | C000268966 |

---

### U.S. VECTOR EQUITY PORTFOLIO (Series ID: S000000982)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                         | Ticker Symbol | Class ID   |
| U.S. VECTOR EQUITY PORTFOLIO - INSTITUTIONAL CLASS | DFVEX         | C000002733 |
| ETF Class                                          | nan           | C000268967 |

---

### U.S. SMALL CAP VALUE PORTFOLIO (Series ID: S000000987)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                           | Ticker Symbol | Class ID   |
| U.S. SMALL CAP VALUE PORTFOLIO - INSTITUTIONAL CLASS | DFSVX         | C000002738 |
| ETF Class                                            | nan           | C000268968 |

---

### U.S. Large Cap Growth Portfolio (Series ID: S000039438)

---

|  |  |
|:---|:---|
| Class Name          | Class ID   |
| Institutional Class | C000121545 |
| ETF Class           | C000268969 |

---

### U.S. Small Cap Growth Portfolio (Series ID: S000039439)

---

|  |  |
|:---|:---|
| Class Name          | Class ID   |
| Institutional Class | C000121546 |
| ETF Class           | C000268970 |

---

### U.S. Large Cap Equity Portfolio (Series ID: S000041113)

---

|  |  |
|:---|:---|
| Class Name          | Class ID   |
| Institutional Class | C000127650 |
| ETF Class           | C000268971 |

---

### U.S. High Relative Profitability Portfolio (Series ID: S000057237)

---

|  |  |  |
|:---|:---|:---|
| Class Name          | Ticker Symbol | Class ID   |
| Institutional Class | DURPX         | C000182415 |
| ETF Class           | nan           | C000268972 |

---

### U.S. LARGE COMPANY PORTFOLIO (Series ID: S000001014)

---

|  |  |  |
|:---|:---|:---|
| Class Name                   | Ticker Symbol | Class ID   |
| U.S. LARGE COMPANY PORTFOLIO | DFUSX         | C000002765 |
| ETF Class                    | nan           | C000268948 |

---

## Series and Classes Contracts Data

### U.S. MICRO CAP PORTFOLIO (Series ID: S000000948)

| Class ID   | Class Name                                     | Ticker Symbol   |
|:---|:---|:---|
| C000002699 | U.S. MICRO CAP PORTFOLIO - INSTITUTIONAL CLASS | DFSCX           |
| C000268961 | ETF Class                                      |  |

### DFA REAL ESTATE SECURITIES PORTFOLIO (Series ID: S000000949)

| Class ID   | Class Name                                                 | Ticker Symbol   |
|:---|:---|:---|
| C000002700 | DFA REAL ESTATE SECURITIES PORTFOLIO - INSTITUTIONAL CLASS | DFREX           |
| C000268962 | ETF Class                                                  |  |

### U.S. Targeted Value Portfolio (Series ID: S000000970)

| Class ID   | Class Name                                          | Ticker Symbol   |
|:---|:---|:---|
| C000002721 | U.S. Targeted Value Portfolio - Institutional Class | DFFVX           |
| C000268963 | ETF Class                                           |  |

### U.S. SMALL CAP PORTFOLIO (Series ID: S000000971)

| Class ID   | Class Name                                     | Ticker Symbol   |
|:---|:---|:---|
| C000002722 | U.S. SMALL CAP PORTFOLIO - INSTITUTIONAL CLASS | DFSTX           |
| C000268964 | ETF Class                                      |  |

### U.S. CORE EQUITY 1 PORTFOLIO (Series ID: S000000979)

| Class ID   | Class Name                                         | Ticker Symbol   |
|:---|:---|:---|
| C000002730 | U.S. CORE EQUITY 1 PORTFOLIO - INSTITUTIONAL CLASS | DFEOX           |
| C000268965 | ETF Class                                          |  |

### U.S. CORE EQUITY 2 PORTFOLIO (Series ID: S000000980)

| Class ID   | Class Name                                         | Ticker Symbol   |
|:---|:---|:---|
| C000002731 | U.S. CORE EQUITY 2 PORTFOLIO - INSTITUTIONAL CLASS | DFQTX           |
| C000268966 | ETF Class                                          |  |

### U.S. VECTOR EQUITY PORTFOLIO (Series ID: S000000982)

| Class ID   | Class Name                                         | Ticker Symbol   |
|:---|:---|:---|
| C000002733 | U.S. VECTOR EQUITY PORTFOLIO - INSTITUTIONAL CLASS | DFVEX           |
| C000268967 | ETF Class                                          |  |

### U.S. SMALL CAP VALUE PORTFOLIO (Series ID: S000000987)

| Class ID   | Class Name                                           | Ticker Symbol   |
|:---|:---|:---|
| C000002738 | U.S. SMALL CAP VALUE PORTFOLIO - INSTITUTIONAL CLASS | DFSVX           |
| C000268968 | ETF Class                                            |  |

### U.S. Large Cap Growth Portfolio (Series ID: S000039438)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000121545 | Institutional Class |  |
| C000268969 | ETF Class           |  |

### U.S. Small Cap Growth Portfolio (Series ID: S000039439)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000121546 | Institutional Class |  |
| C000268970 | ETF Class           |  |

### U.S. Large Cap Equity Portfolio (Series ID: S000041113)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000127650 | Institutional Class |  |
| C000268971 | ETF Class           |  |

### U.S. High Relative Profitability Portfolio (Series ID: S000057237)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000182415 | Institutional Class | DURPX           |
| C000268972 | ETF Class           |  |

### U.S. LARGE COMPANY PORTFOLIO (Series ID: S000001014)

| Class ID   | Class Name                   | Ticker Symbol   |
|:---|:---|:---|
| C000002765 | U.S. LARGE COMPANY PORTFOLIO | DFUSX           |
| C000268948 | ETF Class                    |  |

---

| | |
|:---|:---|
| **DFA Investment Dimensions Group Inc.** | **DFA Investment Dimensions Group Inc.** |
| U.S. Large Cap Equity Portfolio<br> U.S. Small Cap Value Portfolio<br> U.S. Targeted Value Portfolio<br> U.S. Core Equity 1 Portfolio<br> U.S. Core Equity 2 Portfolio<br> U.S. Vector Equity Portfolio<br>| U.S. Small Cap Portfolio<br> U.S. Micro Cap Portfolio<br> U.S. High Relative Profitability Portfolio<br> DFA Real Estate Securities Portfolio<br> U.S. Large Cap Growth Portfolio<br> U.S. Small Cap Growth Portfolio |

---

#### Dimensional Investment Group Inc.
U.S. Large Company Portfolio

SUPPLEMENT TO THE CURRENTLY EFFECTIVE<br> PROSPECTUSES AND STATEMENTS OF ADDITIONAL INFORMATION<br>

Effective May 6, 2026, the disclosure on the cover page of the currently effective Prospectuses and Statements of Additional Information ("SAIs") of the portfolios listed above, each a series of DFA Investment Dimensions Group Inc. or Dimensional Investment Group Inc, regarding the offering of ETF class shares is replaced with the following. Capitalized terms not otherwise defined in this supplement have the meanings assigned to them in the Prospectuses and SAIs.

The following Portfolios began offering ETF Class shares on the dates listed below:

---

| | |
|:---|:---|
| **Portfolio** | **Commencement of ETF Class Shares Offering** |
| U.S. Micro Cap Portfolio | March 20, 2026 |
| U.S. Small Cap Growth Portfolio | May 6, 2026 |

---

The Fund has registered ETF Class Shares for the U.S. Large Cap Equity Portfolio, U.S. Small Cap Value Portfolio, U.S. Targeted Value Portfolio, U.S. Core Equity 1 Portfolio, U.S. Core Equity 2 Portfolio, U.S. Vector Equity Portfolio, U.S. Small Cap Portfolio, U.S. High Relative Profitability Portfolio, DFA Real Estate Securities Portfolio, U.S. Large Cap Growth Portfolio, and U.S. Large Company Portfolio, but they are not offered for sale at this time.

*The date of this Supplement is May 6, 2026*

<br>