IUSB vs UNIY

IUSBAiShares Core Universal USD Bond ETF

UNIYAWisdomTree Voya Yield Enhanced USD Universal Bond Fund

In short

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.

UNIY Most core bond funds copy the Agg and stop. UNIY follows a yield-enhanced version of the broader Bloomberg US Universal index, reshuffling the mix toward higher-yielding corners of the US dollar bond market, at a fraction of the typical category fee.

Stated mandate

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

UNIY The fund seeks to track the price and yield performance of the Bloomberg US Universal Enhanced Yield Index before fees and expenses.

Why people hold it

• 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.

• UNIY 0.15% a year, well under half the typical fee among core bond ETFs, for a rules-based yield tilt rather than a plain Agg clone.wisdomtree.com
• Roughly 7,000 bonds across the US dollar market, so no single issuer or sector steers the portfolio.wisdomtree.com
• Pays monthly, and it has stayed inside its stated mandate since the 2023 launch: US dollar bonds tracking its Bloomberg benchmark, no style drift.
• A multi-billion-dollar fund that ranks in the upper tier of its core-bond peer group on our review.

Worth knowing

• 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.

• UNIY The tilt costs you: index-hugging cousins BND, SPAB and SCHZ charge 0.03%.
• Enhancing yield means leaning further into credit than a plain Agg tracker, so it can behave differently when spreads widen.
• It trades thinly next to the category giants, so spreads can run wider and larger orders need more care.

Full IUSB profile⁠

Full UNIY profile⁠