# EDGAR Filing Document

**Accession Number:** 0000355437
**File Stem:** 0001410368-26-064993
**Filing Date:** 2026-6
**Character Count:** 13514
**Document Hash:** 01a1118c50bccfee5c3923504d930645
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001410368-26-064993.hdr.sgml**: 20260624

**ACCESSION NUMBER**: 0001410368-26-064993

**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:** 261114363

**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

### Dimensional VIT Inflation-Protected Securities Portfolio (Series ID: S000049213)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000155213 | Institutional Class |  |

## 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:** Dimensional VIT Inflation-Protected Securities Portfolio

- **b. EDGAR series identifier (if any):** S000049213

- **c. LEI of Series:** 549300GSTO7CI0MS1Z05

**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:** $240745874.75

**Total Liabilities:** $31366.25

**Net Assets:** $240714508.50

**Currency Risk Metrics (dv01):**

- 

**Credit Spread Risk - Investment Grade (dv01):**

- **3-Month:** 0.00000000 | **1-Year:** 0.00000000 | **5-Year:** 0.00000000 | **10-Year:** 0.00000000 | **30-Year:** 0.00000000

**Credit Spread Risk - Non-Investment Grade (dv01):**

- **3-Month:** 0.00000000 | **1-Year:** 0.00000000 | **5-Year:** 0.00000000 | **10-Year:** 0.00000000 | **30-Year:** 0.00000000

**Monthly Return Information**

| Class               | Month 1 Return (%)   | Month 2 Return (%)   | Month 3 Return (%)   |
|:---|:---|:---|:---|
| Class ID C000155213 | 1.40%                | -1.48%               | 1.18%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-2143447.19             | $5025697.65                                |
| Month 2  | $-63537.82               | $-4420644.99                               |
| Month 3  | $-57258.63               | $1445986.05                                |

### 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   |
|:---|:---|:---|:---|:---|:---|:---|---:|:---|:---|:---|:---|:---|:---|:---|---:|:---|
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                        | CUSIP: 91282CCM1<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  22247845 | PA      | $20952897.39  | 8.70%             | 2031-07-15      | Fixed         | 0.13%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                        | CUSIP: 9128287D6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   3384924 | PA      | $3310893.97   | 1.38%             | 2029-07-15      | Fixed         | 0.25%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                        | CUSIP: 91282CJY8<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   8290854 | PA      | $8319814.70   | 3.46%             | 2034-01-15      | Fixed         | 1.75%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                        | CUSIP: 91282CGK1<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   8445976 | PA      | $8203348.95   | 3.41%             | 2033-01-15      | Fixed         | 1.13%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Bonds                        | CUSIP: 912810FQ6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  14394665 | PA      | $15967015.25  | 6.63%             | 2032-04-15      | Fixed         | 3.38%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Bonds                        | CUSIP: 912810RL4<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   4162530 | PA      | $2996711.37   | 1.24%             | 2045-02-15      | Fixed         | 0.75%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Bonds                        | CUSIP: 912810QP6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  13129600 | PA      | $12770447.93  | 5.31%             | 2041-02-15      | Fixed         | 2.13%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Bonds                        | CUSIP: 912810PZ5<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  11337558 | PA      | $11797988.85  | 4.90%             | 2029-01-15      | Fixed         | 2.50%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Bonds                        | CUSIP: 912810RA8<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   7105650 | PA      | $5253622.43   | 2.18%             | 2043-02-15      | Fixed         | 0.63%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Bonds                        | CUSIP: 912810RR1<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   5515800 | PA      | $4099459.16   | 1.70%             | 2046-02-15      | Fixed         | 1.00%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                        | CUSIP: 912828Z37<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  18096645 | PA      | $17428583.82  | 7.24%             | 2030-01-15      | Fixed         | 0.13%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Bonds                        | CUSIP: 912810QV3<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   9398870 | PA      | $7271707.68   | 3.02%             | 2042-02-15      | Fixed         | 0.75%                 | No            |                  2 | 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        |   1776393 | NS      | $1776393.47   | 0.74%             |  |  |  | No            |                  1 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                        | CUSIP: 91282CLE9<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   3644445 | PA      | $3688556.56   | 1.53%             | 2034-07-15      | Fixed         | 1.88%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                        | CUSIP: 91282CML2<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   9835540 | PA      | $10075907.61  | 4.19%             | 2035-01-15      | Fixed         | 2.13%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                        | CUSIP: 91282CBF7<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  18970186 | PA      | $17975499.25  | 7.47%             | 2031-01-15      | Fixed         | 0.13%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Bonds                        | CUSIP: 912810RF7<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   5046984 | PA      | $4188547.34   | 1.74%             | 2044-02-15      | Fixed         | 1.38%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                        | CUSIP: 91282CHP9<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   1613730 | PA      | $1590333.29   | 0.66%             | 2033-07-15      | Fixed         | 1.38%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                        | CUSIP: 9128285W6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  12163412 | PA      | $12130661.89  | 5.04%             | 2029-01-15      | Fixed         | 0.88%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Bonds                        | CUSIP: 912810FH6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  16377082 | PA      | $17710807.43  | 7.36%             | 2029-04-15      | Fixed         | 3.88%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                        | CUSIP: 91282CEZ0<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  14787701 | PA      | $14073430.35  | 5.85%             | 2032-07-15      | Fixed         | 0.63%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                        | CUSIP: 91282CDX6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  21805580 | PA      | $20254349.57  | 8.41%             | 2032-01-15      | Fixed         | 0.13%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Bonds                        | CUSIP: 912810QF8<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  11942272 | PA      | $11756360.08  | 4.88%             | 2040-02-15      | Fixed         | 2.13%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                        | CUSIP: 912828ZZ6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |   6881544 | PA      | $6597987.78   | 2.74%             | 2030-07-15      | Fixed         | 0.13%                 | No            |                  2 | 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