SPAB vs UNIY

SPABAState Street SPDR Portfolio Aggregate Bond ETF

UNIYAWisdomTree Voya Yield Enhanced USD Universal Bond Fund

In short

SPAB A 2007-vintage core bond fund priced at 0.03%: roughly 8,500 US investment-grade bonds in one ticket, at the same rock-bottom fee the household names charge for the same index.

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

SPAB The fund seeks to track the price and yield performance of the Bloomberg U.S. Aggregate Bond Index before fees and expenses, providing broad exposure to U.S.-dollar-denominated investment-grade bonds.

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

• SPAB 0.03% a year against a 0.36% median for its peer group, and the same ticket price as AGG, SCHZ and BBAG on the identical index.
• Roughly 8,500 dollar-denominated investment-grade bonds in one line item, tracking the Bloomberg U.S. Aggregate Bond Index. Diversification you could not assemble bond by bond.ssga.com
• Trades actively and has tracked its index closely, putting it among the stronger implementations in the core-bond group.
• Running since 2007, now a multi-billion-dollar fund, and it pays monthly rather than quarterly.

• 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

• SPAB Bond prices move opposite yields. When rates rise the index falls and the fund follows it down; a 0.03% fee cannot cushion that.
• AGG, SCHZ and BBAG hold the same declared index at the same 0.03%. Picking among them comes down to spreads and platform, not the portfolio.
• Investment grade and US dollar only by mandate: high yield and foreign-currency debt sit outside the remit.ssga.com

• 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 SPAB profile⁠

Full UNIY profile⁠