IUSB vs SCHZ

IUSBAiShares Core Universal USD Bond ETF

SCHZASchwab U.S. Aggregate 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.

SCHZ Schwab's core bond holding: the broad U.S. investment-grade bond market, over 10,000 issues deep, for 0.03% a year. That is the floor of a category whose median fee is more than ten times higher. Running since 2011, pays monthly.

Stated mandate

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

SCHZ The fund seeks to track the total return of an index representing the broad U.S. investment-grade bond market.

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.

• SCHZ 0.03% a year sits at the category floor, against a cohort median of 0.36%. Only a short list of aggregate-bond funds matches it, including AGG, BND and SPAB.
• Tracks the Bloomberg US Aggregate Bond Index tightly, one of the cleanest index implementations among the 187 funds in its peer group.schwabassetmanagement.com
• One ticker, thousands of investment-grade U.S. bonds, income paid monthly. The plumbing of a bond portfolio without buying a single bond yourself.
• Live since 2011 and now a multi-billion-dollar fund that trades actively, so trading costs on ordinary retail-sized orders tend to be minor.

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.

• SCHZ This is duration exposure, not a cash substitute. Interest-rate moves, not credit selection, drive most of the ride, and that is the weakest part of its risk profile.
• Investment grade and U.S. only: no high-yield, no foreign bonds. Funds like BNDX cover the international side of the cohort.
• The aggregate-bond aisle is commoditized. Against AGG, BND and SPAB at the same 0.03%, the differences come down to index variant and where you already custody, not fee.

Full IUSB profile⁠

Full SCHZ profile⁠