BDBT vs IUSB

BDBTBBluemonte Core Bond ETF

IUSBAiShares Core Universal USD Bond ETF

In short

BDBT An active manager's take on the plainest job in bonds: core fixed income at 0.22% net of a waiver through August 31, 2027, below the typical core bond fund, paid out monthly.

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

BDBT The Fund seeks total return and income. It is actively managed and normally invests at least 80% of net assets, including investment borrowings, in investments providing exposure to bonds.

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

• BDBT Active management priced like a cheap fund: 0.22% net of a waiver through August 31, 2027 (0.27% gross), below the category median across 114 funds.
• Distributions land monthly, not in quarterly lumps.
• Does what the prospectus says: total return and income, with at least 80% of net assets in bond exposure, and a portfolio that lines up closely with that mandate.sec.gov
• Lands in the upper half of a crowded broad bond field whose leaders are nearly all index trackers.

• 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

• BDBT The index giants are far cheaper: AGG, BND, SPAB and SCHZ each charge 0.03%. You are paying up for the active call.
• The 0.22% depends on a waiver running through August 31, 2027. The stated gross fee is 0.27%.
• Launched June 2025, so the record is short and spans one rate backdrop. Trading is moderate rather than heavy, so limit orders earn their keep.

• 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 BDBT profile⁠

Full IUSB profile⁠