BKAG vs WSDB

BKAGABNY Mellon Core Bond ETF

WSDBDWeitz Short Duration 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.

WSDB Weitz has run this short-duration credit playbook from Omaha since 1988. WSDB is the ETF version: active bond picking across credit qualities, with a duration target of one to three and a half years.

Stated mandate

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

WSDB The Fund seeks current income while preserving capital.

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.

• WSDB The ticker is new, the strategy isn't. Weitz has run this short-duration approach since 1988, when it started as a mutual fund, backed by a multi-billion-dollar bond platform.businesswire.com
• Duration stays short by design: a target average effective duration of one to three and a half years, muting price swings from rate moves versus intermediate and long bond funds.stockanalysis.combusinesswire.com
• Actively managed across the credit spectrum, from Treasuries and agency mortgages to corporate and securitized paper, aiming for current income while preserving capital.sec.gov

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.

• WSDB Costs 0.45% a year, above the typical bond fund in its cohort and far above index giants like BND, SPAB and SCHZ at 0.03%. Active credit work is the thing you're paying for.
• A 2026 launch with a small asset base and light trading, so bid-ask spreads can matter more than the expense ratio on a single trade.
• Short duration trims interest-rate risk, not credit risk: reaching into lower-rated corporate and securitized debt brings downgrade and default exposure.stockanalysis.comsec.gov

Full BKAG profile⁠

Full WSDB profile⁠