BKAG vs BLV

BKAGABNY Mellon Core Bond ETF

BLVAVanguard Long-Term Bond 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.

BLV Most bond ETFs spread across every maturity. BLV camps at the long end, tracking an index of long-dated Treasuries and investment-grade corporates for 0.03% a year. Maximum interest-rate sensitivity, minimum price tag.

Stated mandate

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

BLV The fund seeks to track a market-weighted index of long-term, dollar-denominated bonds through an indexing approach. It invests at least 80% of assets in securities represented by the target index and uses sampling.

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.

• BLV Costs 0.03% a year against a 0.36% median for its bond peer group. In indexed bonds, where everyone owns roughly the same paper, the fee gap is most of the difference.
• Not a Treasuries-only long bond fund. The Bloomberg U.S. Long Government/Credit Float Adjusted Index blends long government bonds with investment-grade corporate credit.
• Running since 2007 and now a multibillion-dollar fund that trades actively, so entering and exiting rarely means paying up on the spread.
• Pays monthly, and sits inside Vanguard's index bond lineup alongside BND, one of the strongest cost profiles in a 187-fund field.

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.

• BLV Long maturities are the point, and they cut both ways: prices move sharply when long-term rates move. This is the twitchiest corner of the investment-grade bond market.
• The corporate side brings credit risk that a Treasury-only long fund does not carry.
• Vanguard samples the index rather than owning every bond in it, holding roughly 170 issues, so returns can diverge slightly from the benchmark.

Full BKAG profile⁠

Full BLV profile⁠