Underlying Investments

Each investment option consists of one or more underlying funds

Underlying investments in my529 accounts are managed by:

  • Vanguard Group.
  • Dimensional Fund Advisors.
  • Pacific Investment Management Company (PIMCO).
  • Or are held in trust by my529 at Sallie Mae Bank and U.S. Bank.

my529 pools contributions from account owners and other contributors for the purpose of investing in Vanguard and Dimensional mutual funds, the PIMCO Interest Income Fund separate account, and FDIC-insured accounts held at Sallie Mae Bank and U.S. Bank. Each of my529’s investment options comprises some combination of these underlying investments. The my529 account owner does not own shares of any underlying investment. Instead, the account owner owns my529 units in the selected investment options issued by my529.

Read the Program Description for more information.

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Underlying Fund Expenses

Vanguard and Dimensional charge an Underlying Fund Expense for each underlying mutual fund. Fund expenses do not appear on my529 account statements because Vanguard and Dimensional deduct the fees from the applicable underlying funds (and because you do not own shares in the funds). The performance and market values of a my529 account are net of any fund expenses. The Underlying Fund Expenses in the tables below apply to the Vanguard and Dimensional funds included as underlying investments in my529.

To view a Fund Fact Sheet or Prospectus, click the icon next to the fund.


As of December 31, 2023, Vanguard managed more than $8.6 trillion in U.S. mutual funds and ETF assets. The firm offers 206 funds to U.S. investors and 216 additional funds in non-U.S. markets.

Underlying FundTicker SymbolUnderlying Fund ExpensesFund Fact SheetProspectus
Institutional Total Stock Market Index FundVSTSX0.010%
Institutional Index Fund1VIIIX0.020%
Value Index Fund1VIVIX0.040%
Growth Index Fund1VIGIX0.040%
Mid-Cap Index Fund1VMCPX0.030%
Small-Cap Index Fund1VSCPX0.030%
Small-Cap Value Index Fund1, 2VSIIX0.060%
Small-Cap Growth Index Fund1, 2VSGIX0.060%
FTSE Social Index Fund1VFTNX0.120%
Total International Stock Index FundVTISX0.050%
Developed Markets Index Fund1VDIPX0.050%
International Value Fund1, 2VTRIX0.390%
International Growth Fund1, 2VWILX0.310%
Emerging Markets Stock Index Fund1, 2VEMRX0.080%
Short-Term Investment-Grade Fund1VFSIX0.070%
Short-Term Bond Index Fund1VBIPX0.040%
Short-Term Inflation-Protected Securities Index Fund1VTSPX0.040%
Total Bond Market Index FundVTBSX0.010%
High-Yield Corporate Fund1, 2VWEAX0.120%
Total International Bond Index FundVTIFX0.070%


As of December 31, 2023, Dimensional managed $677 billion for investors worldwide, with offices around the globe. They offer investment solutions across asset classes, including global equities, fixed income, and real estate investment trusts (REITS).

Underlying FundTicker SymbolUnderlying Fund ExpensesFund OverviewProspectus
U.S. Large Cap Value Portfolio1, 4DFLVX0.220%
U.S. Small Cap Value Portfolio1, 2DFSVX0.310%
Real Estate Securities Portfolio1, 2, 3DFREX0.180%
U.S. Sustainability Core 1 Portfolio1DFSIX0.170%
International Value Portfolio1, 2, 4DFIVX0.280%
Global Equity Portfolio1, 3DGEIX0.250%
One-Year Fixed Income Portfolio1DFIHX0.130%
Five-Year Global Fixed Income Portfolio1DFGBX0.210%

1The fund is available in the Customized Age-Based and Customized Static investment options only.
2An investment allocation to this fund may not exceed 25 percent in an account. For the Customized Age-Based investment option, this cap applies to the allocation for each age bracket. Therefore, the total operating expense ratio will reflect the weighted allocation to the underlying investments.
3The total operating expense ratio reflects a fee waiver pursuant to a Fee Waiver Agreement in effect through February 28, 2025. The total operating expense ratio may increase if the Fee Waiver Agreement is not extended.
4The total Operating Expense Ratios reflect a permanent, contractual Fee Waiver Agreement with Dimensional Fund Advisors LP.

PIMCO Interest Income Fund

The PIMCO Interest Income Fund, a stable value fund, is run by Pacific Investment Management Company (PIMCO), a Newport Beach, California investment firm with $1.86 trillion in assets under management as of December 31, 2023.

PIMCO Interest Income Fund focuses on preserving principal and providing liquidity while generating steady returns for my529 account owners saving for higher education. The fund invests in high-quality government and corporate bonds with short-and intermediate-term maturity dates.

The investment management fee for the fund is 0.110 percent. In the future, the management fee could be higher or lower depending on the total invested assets under management.

Read the PIMCO Interest Income Fund Fact Sheet for more information.

FDIC-insured accounts

All money invested in the FDIC-Insured investment option and the portion of the Enrollment Date, Static or Customized investment options allocated to the FDIC-insured accounts is held in trust by my529 at Sallie Mae Bank and U.S. Bank.

Sallie Mae Bank, a wholly owned subsidiary of SLM Corporation, has operated as an industrial bank in Utah since 2005. The bank had approximately $29.2 billion in assets as December 31, 2023. For more information about Sallie Mae Bank, visit salliemae.com/banking.

U.S. Bank National Association, based in Minneapolis, Minnesota, has been chartered since 1863. U.S. Bank had $663 billion in assets as of December 31, 2023. For more information about U.S. Bank, visit usbank.com.

Contributions to and earnings on the FDIC-Insured investment option (as well as the portion of the Enrollment Date, Static, or Customized investment options that are invested in the FDIC-insured accounts) are allocated between the banks according to the following percentages: Sallie Mae Bank (90 percent) and U.S. Bank (10 percent). This money is insured by the FDIC on a pass-through basis to each account owner at each bank up to the maximum amount set by federal law, which is $250,000. The amount of FDIC insurance provided to an account owner is based on the total of (1) the value of an account owner’s investment in the FDIC-insured account at each bank plus (2) the value of other accounts held (if any) at each bank, as determined by the banks and by FDIC regulations.

The interest paid in the FDIC-insured accounts is a floating rate that is a 90/10 blend of the interest paid by each of the banks based on recognized benchmarks for short-term interest rates.