DFA Inflation-Protected Securities Portfolio
DFA INVESTMENT DIMENSIONS GROUP INC
Fund classification
Classified from what the fund holds · as of 2026 Q2
DFA Inflation-Protected Securities Portfolio is an actively managed U.S. bond fund.
- Asset class
- Bonds
- Region
- United States
- Management
- Actively managed
- Fund type
- Open-end fund
- Rate sensitivity
- Intermediate duration
Fund profile
As filed in the prospectus · 2026 Q1
The investment objective of the DFA Inflation-Protected Securities Portfolio (the Inflation-Protected Portfolio or the Portfolio) is to provide inflation protection and earn current income consistent with inflation-protected securities.
The fund invests primarily in U.S. Treasury Inflation-Protected Securities and other inflation-linked debt, targeting a duration similar to the Bloomberg U.S. TIPS Index, typically holding securities with five- to twenty-year maturities. Because returns on inflation-protected securities depend on actual inflation outcomes and real interest rate movements, fund performance will diverge from conventional fixed-rate bonds. The fund may use futures and options to adjust interest rate exposure or substitute for direct holdings.
| Share class | Expense ratio |
|---|---|
| C000036041 | 0.11% |
Portfolio turnover 16.00% · as of 2026 Q1
Allocation
Asset groups · long / short shown separately, never netted · 2026 Q2
| Bonds | 99.22% |
| Cash & short-term | 0.52% |
Latest quarter
What changed since the fund's previous filing
Largest new: United States Treasury ×2
Return profile
Total return as filed — price change plus distributions reinvested · trailing figures to Apr 2026
Debt profile
What this fund holds — value-weighted across its bond and securitized long positions · as of 2026-04-30
Share of the fund's debt by how its coupon behaves — the fact that decides whether a rate move reaches this portfolio at all.
| Fixed rate | 100.0% |
Share of the fund's debt value in each maturity band, shortest first.
| <1y | 0.0% |
| 1-3y | 34.6% |
| 3-5y | 13.8% |
| 5-10y | 23.9% |
| 10y+ | 27.7% |
Based on what filers reported; a filer that never reported a flag also reads as none.
Risk profile
Interest-rate and credit-spread sensitivity, both in years · as of 2026Q2
This fund filed the credit-spread disclosure and reported no sensitivity — measured, and the answer is none.
Where the loss would come from. The two shocks are the same size, so this is the balance of the fund's two sensitivities rather than a bet on one moving more.
| Interest rates | 100% |
Filers report the impact of a 0.01% move only, so the total is our own scaling of that one number and overstates the loss on most bonds — read it as approximate, never as precise. The two sensitivities overlap rather than add up: they measure the same positions against different shocks, which is why the durations above are shown side by side and never summed.
Share of duration at each point, shortest first. A positive figure loses value when spreads widen; a negative one offsets — a credit hedge.
| 3 mo | 0.00 yr | 0% |
| 1 yr | 0.69 yr | 10% |
| 5 yr | 1.89 yr | 28% |
| 10 yr | 3.09 yr | 46% |
| 30 yr | 0.98 yr | 15% |
Show the numbers
| Tenor | Rate yrs | IG yrs | HY yrs | IG $/bp | HY $/bp |
|---|---|---|---|---|---|
| 3 mo | +0.00 | +0.00 | +0.00 | $0 | $0 |
| 1 yr | +0.69 | +0.00 | +0.00 | $0 | $0 |
| 5 yr | +1.89 | +0.00 | +0.00 | $0 | $0 |
| 10 yr | +3.09 | +0.00 | +0.00 | $0 | $0 |
| 30 yr | +0.98 | +0.00 | +0.00 | $0 | $0 |
Dollar change per 1bp of spread movement, as filed and sign-anchored. A blank cell was not filed; a zero was.
Holdings
By % of NAV · equity positions carry filed share counts · every resolvable issuer links to its company page
| Ticker | Issuer | %NAV | Value | Shares |
|---|---|---|---|---|
| — | United States Treasury0.88% · due 2029-01-15 | 9.90% | $509.10M | — |
| — | United States Treasury2.50% · due 2029-01-15 | 9.63% | $494.88M | — |
| — | United States Treasury3.88% · due 2029-04-15 | 9.36% | $480.91M | — |
| — | United States Treasury2.13% · due 2040-02-15 | 7.88% | $404.78M | — |
| — | United States Treasury2.13% · due 2041-02-15 | 7.70% | $395.91M | — |
| — | United States Treasury3.38% · due 2032-04-15 | 6.38% | $327.71M | — |
| — | United States Treasury0.13% · due 2032-01-15 | 5.05% | $259.47M | — |
| — | United States Treasury3.63% · due 2028-04-15 | 4.70% | $241.33M | — |
| — | United States Treasury0.13% · due 2030-01-15 | 4.66% | $239.72M | — |
| — | United States Treasury0.75% · due 2042-02-15 | 4.35% | $223.74M | — |
Top 10 positions are 69.60% of net assets, top 25 98.98%, across 2 issuers.
See more of this fund's book
More positions with filed share counts, and the quarter-over-quarter change list rather than the largest few — free with an account, no card required.
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