New Dimensional underlying funds
Do you have clients invested in a my529 Customized option?
If you do, you should know that my529 has added two new single-fund fixed-income portfolios with underlying Dimensional investments, effective March 25, 2026.
As part of a continuous evaluation of the plan’s fund lineup, my529 decided to expand the intermediate duration fund offerings with two new portfolios that provide diversification and additional choice— without duplicating existing options. And your clients can benefit from access to these additional portfolio building blocks.
New portfolios
| my529 single-fund portfolios | Corresponding Dimensional underlying investments | Underlying Fund Expense |
|---|---|---|
| my529 Investment Grade (UTDAX) | DFA Investment Grade Portfolio (DFAPX) | 19 bps |
| my529 Inflation-Protected Securities (UTDPX) | DFA Inflation-Protected Securities (DIPSX) | 11 bps |
- The Dimensional underlying investments average first- or second-quartile category performance over 1-, 3-, 5-, and 10-year periods.
- Gold and Silver ratings by Morningstar reflect above-average recognition from an industry perspective.
See the chart below for more information about the Dimensional funds, with data as of December 31, 2025.
| DFAPX | DIPSX | |
|---|---|---|
| Fund AUM | $12.5 billion | $5.2 billion |
| Inception | 3/7/2011 | 9/18/2006 |
| Morningstar ratings | Silver; 4-star | Gold; 4-star |
| Duration | 6.20 | 6.60 |
| Expense ratio | 19 bps | 11 bps |
Advisors can use the two new portfolios in the creation of a Customized Age-Based or Customized Static investment option. If you would like to add these portfolios to a client’s existing allocation, you can make an option change on the client accounts with level 2 access or higher. This change will count as one of the two option changes allowed per calendar year.

Using the funds within the Customized space
Create a my529 Customized template that complements the other investments at your firm. Advisors can build a model using my529 portfolios with Dimensional, Vanguard and PIMCO underlying funds, save the model as a template and apply to multiple client accounts. This allows you to create a well-rounded, comprehensive investment portfolio that aligns with your firm’s investment strategy.
Additional information about the program managers can be found in the resource tab in FA Suite. See below.

If you have questions, reach out to the my529 Relationship Management Team by phone at 888.529.1886 or email advisorinfo@my529.org.