BKAG vs DYNB

BKAGABNY Mellon Core Bond ETF

DYNBCHartford Dynamic 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.

DYNB Measured against the US Aggregate index, but it does not live there. Wellington rotates DYNB across government, investment-grade, high-yield and emerging-market debt, with no index to hug and no permanent home base.

Stated mandate

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

DYNB The Fund seeks long-term total return; an earlier SEC objective statement also identifies income as a secondary objective.

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.

• DYNB Go-anywhere by design: the mandate covers domestic and foreign bonds, investment grade and junk, so the manager can move toward where the yield is instead of holding what a benchmark dictates.hartfordfunds.com
• Not starting from a blank sheet. Wellington Management sub-advises, and Hartford's same-named Dynamic Bond mutual fund, a multi-billion-dollar strategy running since 2022, shares the lead portfolio manager.hartfordfunds.comhartfordfunds.com 2
• The portfolio matches the prospectus: roughly 200 bonds spread across sectors and credit tiers, with no hidden style drift to decode. Income is paid monthly.hartfordfunds.com

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.

• DYNB Active costs more: 0.60% net of a waiver through November 30, 2026 (0.70% gross), above the category median, next to 0.03% at index trackers like AGG and BND.
• Launched in September 2025, so the live record is short and the asset base is small. Most of the evidence on this strategy sits with its older mutual fund cousin.hartfordfunds.com
• Trading is thin compared with the category's index giants, so the spread you cross can matter more than the expense ratio.

Full BKAG profile⁠

Full DYNB profile⁠