DFCF vs IUSB

DFCFADimensional Core Fixed Income ETF

IUSBAiShares Core Universal USD Bond ETF

In short

DFCF Most big aggregate-bond ETFs copy an index. DFCF doesn't: Dimensional runs it actively, shifting maturity and credit exposure to target expected term and credit premiums, for 0.17% (net of a waiver through February 28, 2027).

IUSB Most core bond funds stop at investment grade. IUSB keeps going, folding high-yield USD debt into the same wrapper across roughly 18,000 bonds, for 0.06% a year.

Stated mandate

DFCF The fund seeks to maximize total returns from its universe of eligible investments.

IUSB The Fund seeks to track an index of U.S.-dollar-denominated bonds spanning investment-grade and high-yield sectors.

Why people hold it

• DFCF No index to hug. Within investment-grade rules, the managers lengthen or shorten maturities and lean into credit as expected term and credit premiums change.sec.gov
• 0.17% net of a waiver through February 28, 2027 (0.18% gross), below the category median. Active bond management usually asks for more.
• Roughly 1,700 bonds spanning Treasuries, agency mortgage debt, corporates and supranational issuers, held in a multi-billion-dollar fund that trades actively.sec.gov
• One of the stronger implementations in a crowded aggregate-bond field, and the portfolio has stayed inside the mandate its prospectus describes.

• IUSB 0.06% a year, a fraction of what the typical broad bond fund in its category charges, and iShares has run it since 2014.
• Roughly 18,000 bonds spanning investment-grade and high-yield sectors, so one ticker covers ground a plain Agg tracker leaves on the table.ishares.com
• Tracks its index closely, trades heavily, and sits on a multi-billion-dollar asset base. Income is paid monthly.
• Among the strongest implementations in a crowded field of nearly 200 core bond funds.

Worth knowing

• DFCF The index giants are cheaper: AGG, SCHZ and BND each charge 0.03%. You're paying up for the active tilts.
• The prospectus allows an emphasis on the lower half of investment grade (BBB- to A+), so credit risk can run hotter than a Treasury-heavy tracker.sec.gov
• Duration isn't pinned to an index. Maturity exposure moves with the managers' read on term premiums, so rate sensitivity can drift over time.sec.gov

• IUSB That high-yield sleeve is the trade-off: more credit risk than an investment-grade-only fund, and more movement when spreads widen.
• BND, SPAB and SCHZ charge 0.03%, half IUSB's fee, but they stay inside investment grade.
• Payouts land monthly, but the amount floats with the coupons underneath. Nothing about the income stream is fixed.

Full DFCF profile⁠

Full IUSB profile⁠