BKAG vs BTOT

BKAGABNY Mellon Core Bond ETF

BTOTBiShares Total USD Fixed Income Market ETF

In short

BKAG A core bond index fund that charges nothing. BKAG tracks the same Bloomberg US Aggregate benchmark the giants track, at a 0.00% expense ratio, and has been doing it since 2020.

BTOT One ticket for the US dollar bond market, investment grade and high yield together, at 0.10% a year. iShares launched it in December 2025 as a wider take on core bond exposure than the usual index.

Stated mandate

BKAG The fund seeks to track the Bloomberg US Aggregate Total Return Index.

BTOT The Fund seeks broad exposure to U.S.-dollar-denominated fixed-income securities spanning investment-grade and high-yield markets, while tracking its underlying index before fees and expenses.

Why people hold it

• BKAG A 0.00% expense ratio. The median fund in the core bond group charges 0.36%, and even the cheap giants (BND, SPAB, SCHZ) charge 0.03%.
• Tracks the Bloomberg US Aggregate Total Return Index tightly, one of the closest index-following records in its peer group.
• Broad by design: roughly 4,000 bonds in the portfolio, with distributions paid monthly rather than quarterly.
• A multi-billion-dollar fund from BNY Mellon, wrapped in a standard 1940 Act ETF structure with no exotic mechanics.

• BTOT 0.10% a year against a 0.36% median for its broad-bond peer group. In fixed income, fee drag is one of the few variables you actually control.
• Investment grade and high yield in one wrapper, tracking the Bloomberg U.S. Total Fixed Income Market Index, so you are not stapling a separate high-yield sleeve onto a core fund yourself.ishares.com
• Roughly 1,100 bonds, so no single issuer carries much weight, held in a conventional 1940 Act fund from iShares.

Worth knowing

• BKAG Rate risk is the trade-off. This is full-market bond exposure, and bond prices move opposite interest rates. Volatility is the weakest part of its profile.
• Moderately traded, not one of the volume monsters in the category. Spreads and limit orders matter more here than with the largest core bond names.
• At zero, the fee edge over 0.03% rivals is real but small in dollar terms, so tracking and trading costs do more of the work.

• BTOT The high-yield portion carries credit risk an investment-grade-only core bond fund does not, so it moves with credit spreads more than a plain Agg tracker.
• A December 2025 launch: short live record, and it began life thinly traded, so spreads can run wider than at long-established bond funds.
• Cheaper broad-bond options exist: BND, SPAB and SCHZ at 0.03%, iShares' own IUSB at 0.06%, each built on different index rules.

Full BKAG profile⁠

Full BTOT profile⁠