IUSB vs VPLS

IUSBAiShares Core Universal USD Bond ETF

VPLSAVanguard Core-Plus Bond ETF

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.

VPLS Vanguard's active bond desk in an ETF wrapper. The "plus" is permission to roam past U.S. investment grade into high yield and emerging market debt, benchmarked to the broader Universal index instead of the plain Agg, for 0.20% a year.

Stated mandate

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

VPLS The fund seeks total return and moderate to high current income. It invests mainly in investment-grade U.S. bonds, with selective below-investment-grade and foreign debt exposure, including emerging markets, and is actively managed.

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.

• VPLS 0.20% a year for an actively run bond book, comfortably under the 0.36% median for broad bond ETFs. Vanguard's fixed income team, at index-adjacent money.vanguard.com
• The "plus" is the point: Treasuries, agency mortgages and investment-grade credit at the core, plus room for high yield and emerging market debt the plain Agg skips.vanguard.com
• Well over a thousand bonds, so no single issuer moves the needle much, and cash goes out monthly rather than quarterly.
• Does what its prospectus says it does, and sits in the top quartile of the broad bond group.

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.

• VPLS Index Aggs like BND, SPAB and SCHZ charge 0.03%. The gap buys a human team's judgment, which can land behind the benchmark as easily as ahead.
• The high yield and emerging market sleeve carries credit risk a pure investment-grade fund does not, and those are the bonds that wobble when investors turn defensive.vanguard.com
• Moderately traded rather than a giant of the bond aisle, and it launched in 2023, so there is less history behind it than the long-running index Aggs.

Full IUSB profile⁠

Full VPLS profile⁠