IUSB vs UCON

IUSBAiShares Core Universal USD Bond ETF

UCONCFirst Trust Smith Unconstrained 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.

UCON A bond fund with no index to hug. UCON's mandate keeps at least 80% in fixed income and leaves the rest of the map open, spreading roughly a thousand positions across the bond market and paying out monthly.

Stated mandate

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

UCON The fund seeks to maximize long-term total return and normally invests at least 80% of its net assets in fixed-income securities.

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.

• UCON No benchmark leash. The mandate requires at least 80% in fixed income and otherwise lets the manager roam sectors, credit tiers and maturities in pursuit of long-term total return.ftportfolios.com
• Roughly a thousand bond positions, so no single issuer's stumble dominates the portfolio.
• Cash lands monthly, and this is a multi-billion-dollar, actively traded fund rather than a thin newcomer nobody quotes.
• Trading since 2018, so the strategy has been run through both the zero-rate era and the hiking cycle that ended it.

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.

• UCON 0.86% a year is active-manager pricing. Index aggregate trackers in the same aisle, like BND and SPAB, charge 0.03%.
• Unconstrained also means unbenchmarked. The portfolio can look nothing like a core bond index, so it moves on its own schedule.
• The mix reflects a manager's judgment, not an index rulebook, so what you own can shift as their view of rates and credit shifts.

Full IUSB profile⁠

Full UCON profile⁠