# EDGAR Filing Document

**Accession Number:** 0000355437
**File Stem:** 0001752724-25-158586
**Filing Date:** 2025-6
**Character Count:** 14305
**Document Hash:** 5c69d8c27ba40c405e66526fda7dcbf4
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001752724-25-158586.hdr.sgml**: 20250626

**ACCESSION NUMBER**: 0001752724-25-158586

**CONFORMED SUBMISSION TYPE**: NPORT-P

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250430

**FILED AS OF DATE**: 20250626

**DATE AS OF CHANGE**: 20250626

**PERIOD START**: 20251031

**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:** 251078002

**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

### DFA Inflation-Protected Securities Portfolio (Series ID: S000013345)

| Class ID   | Class Name                                                         | Ticker Symbol   |
|:---|:---|:---|
| C000036041 | DFA Inflation-Protected Securities Portfolio - 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:** DFA Inflation-Protected Securities Portfolio

- **b. EDGAR series identifier (if any):** S000013345

- **c. LEI of Series:** 549300TG645KDIW1X492

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

- **a. Date of fiscal year-end:** 2025-10-31

- **b. Date as of which information is reported:** 2025-04-30

**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:** $5091394825.94

**Total Liabilities:** $574835.19

**Net Assets:** $5090819990.75

**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 C000036041 | 2.11%                | 0.83%                | 0.18%                |

**Monthly Gains & Losses**

| Period   | Net Realized Gain/Loss   | Net Unrealized Appreciation/Depreciation   |
|:---|:---|:---|
| Month 1  | $-7712958.28             | $114657177.57                              |
| Month 2  | $-15390949.51            | $18672648.13                               |
| Month 3  | $0.00                    | $-18484614.06                              |

### 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        | 111891960 | PA      | $102672069.21 | 2.02%             | 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        | 150292420 | PA      | $144587008.63 | 2.84%             | 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        |  47742480 | PA      | $47276890.08  | 0.93%             | 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        |  21420600 | PA      | $20411331.37  | 0.40%             | 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        | 250734510 | PA      | $279316371.15 | 5.49%             | 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        |  46063880 | PA      | $33845378.71  | 0.66%             | 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        | 382879405 | PA      | $377127552.80 | 7.41%             | 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        | 464362500 | PA      | $486163873.59 | 9.55%             | 2029-01-15      | Fixed         | 2.50%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                      | CUSIP: 912828Y38<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  52109770 | PA      | $51730192.53  | 1.02%             | 2028-07-15      | Fixed         | 0.75%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Bonds                      | CUSIP: 912810FD5<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        | 442830740 | PA      | $475446401.93 | 9.34%             | 2028-04-15      | Fixed         | 3.63%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Bonds                      | CUSIP: 912810RA8<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        | 201903075 | PA      | $150997626.22 | 2.97%             | 2043-02-15      | Fixed         | 0.63%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                      | CUSIP: 912828Z37<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        | 243041960 | PA      | $229460267.32 | 4.51%             | 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        | 176488750 | PA      | $137838112.61 | 2.71%             | 2042-02-15      | Fixed         | 0.75%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                      | CUSIP: 91282CBF7<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        | 189963350 | PA      | $175588046.36 | 3.45%             | 2031-01-15      | Fixed         | 0.13%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Bonds                      | CUSIP: 912810PV4<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        | 343711759 | PA      | $350732659.42 | 6.89%             | 2028-01-15      | Fixed         | 1.75%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Bonds                      | CUSIP: 912810RF7<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        | 164952450 | PA      | $139445893.89 | 2.74%             | 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        |  29413160 | PA      | $28500392.58  | 0.56%             | 2033-07-15      | Fixed         | 1.38%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                      | CUSIP: 9128283R9<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  93900114 | PA      | $92710588.29  | 1.82%             | 2028-01-15      | Fixed         | 0.50%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                      | CUSIP: 9128285W6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        | 508554725 | PA      | $502524862.82 | 9.87%             | 2029-01-15      | Fixed         | 0.88%                 | No            |                  2 | On Loan: No      |
| State Street Global Advisors | State Street Institutional US Government Money Market Fund | CUSIP: 857492706<br>LEI: 549300BZ5TGIFZUZDZ37 | Long             | STIV             | RF                | US        |  26443017 | NS      | $26443017.03  | 0.52%             |  |  |  | No            |                  1 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Bonds                      | CUSIP: 912810FH6<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        | 449742887 | PA      | $495093906.86 | 9.73%             | 2029-04-15      | Fixed         | 3.88%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                      | CUSIP: 912828UH1<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |       125 | PA      | $125.45       | 0.00%             | 2023-01-15      | Fixed         | 0.13%                 | No            |                  2 | On Loan: No      |
| United States Treasury       | U.S. Treasury Inflation-Indexed Notes                      | CUSIP: 91282CEZ0<br>LEI: 254900HROIFWPRGM1V77 | Long             | DBT              | UST               | US        |  19764720 | PA      | $18369739.50  | 0.36%             | 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        | 223276540 | PA      | $201563541.75 | 3.96%             | 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        | 404440440 | PA      | $401923485.81 | 7.90%             | 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        | 114478360 | PA      | $107493153.77 | 2.11%             | 2030-07-15      | Fixed         | 0.13%                 | No            |                  2 | On Loan: No      |

### Signature

**Date Signed:** 2025-05-16

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

**Signature:** Randy Olson

**Name of Signer:** Randy Olson

**Title:** Vice President