AGG vs UNIY

AGGAiShares Core U.S. Aggregate Bond ETF

UNIYAWisdomTree Voya Yield Enhanced USD Universal Bond Fund

In short

AGG Launched in 2003, one of the first funds to pack the entire U.S. investment-grade bond market into a single ticker: Treasuries, corporates and mortgage bonds, three basis points a year, cash paid monthly.

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

AGG The fund seeks to track the Bloomberg U.S. Aggregate Bond Index, providing broad exposure to the total U.S. investment-grade bond market.

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

• AGG 0.03% a year against a peer-group median near 0.36%. On a bond fund, the fee comes straight out of the coupon, so the gap matters more than it looks.
• A $100 billion-plus fund and very actively traded, the kind of depth that keeps bid-ask costs down for retail-sized orders.
• Tracks the Bloomberg U.S. Aggregate closely, with one of the tightest index-following records in its peer group. Income is distributed monthly.
• Running since 2003, giving it one of the longest track records among U.S. bond index ETFs.

• 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

• AGG Investment grade and U.S. dollar only. High-yield debt and foreign bonds sit outside the mandate, so this is designed as core ballast rather than a yield hunt.
• Rate risk comes as it comes. The index gets tracked whether yields rise or fall, with no manager stepping in to shorten duration.
• The same index is sold by SPAB, SCHZ and BBAG at the same 0.03%. The portfolio is the commodity here; scale and trading depth are the tiebreakers.

• 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 AGG profile⁠

Full UNIY profile⁠