AGG vs VCOB

AGGAiShares Core U.S. Aggregate Bond ETF

VCOBBVoya Core Bond ETF

In short

AGG Launched in 2003, one of the first funds to pack the entire U.S. investment-grade bond market into a single ticker: Treasuries, corporates and mortgage bonds, three basis points a year, cash paid monthly.

VCOB An actively managed take on the core bond aisle: investment-grade corporates, government and mortgage debt, run by Voya's bond team at a price that undercuts the typical fund in the category.

Stated mandate

AGG The fund seeks to track the Bloomberg U.S. Aggregate Bond Index, providing broad exposure to the total U.S. investment-grade bond market.

VCOB The Fund is an actively managed ETF seeking total return through current income and capital appreciation. It normally invests at least 80% of net assets in bonds or bond-like derivatives, primarily including investment-grade corporate, government, and mortgage-related debt.

Why people hold it

• AGG 0.03% a year against a peer-group median near 0.36%. On a bond fund, the fee comes straight out of the coupon, so the gap matters more than it looks.
• A $100 billion-plus fund and very actively traded, the kind of depth that keeps bid-ask costs down for retail-sized orders.
• Tracks the Bloomberg U.S. Aggregate closely, with one of the tightest index-following records in its peer group. Income is distributed monthly.
• Running since 2003, giving it one of the longest track records among U.S. bond index ETFs.

• VCOB Active mandate, not an index clone: normally at least 80% of net assets in bonds, spanning investment-grade corporate, government and mortgage-related debt.
• Charges 0.25%, below the typical fund in its core-bond cohort, which is uncommon for an actively run strategy.
• Pursues total return from two directions, current income plus capital appreciation, inside a standard 1940 Act ETF wrapper.

Worth knowing

• AGG Investment grade and U.S. dollar only. High-yield debt and foreign bonds sit outside the mandate, so this is designed as core ballast rather than a yield hunt.
• Rate risk comes as it comes. The index gets tracked whether yields rise or fall, with no manager stepping in to shorten duration.
• The same index is sold by SPAB, SCHZ and BBAG at the same 0.03%. The portfolio is the commodity here; scale and trading depth are the tiebreakers.

• VCOB Cheap for active, still dearer than the aisle's index heavyweights: BND, SPAB and SCHZ each charge 0.03%.
• Launched in late 2025, so there is little live record of how the managers navigate a full rate cycle.
• A small, lightly traded fund next to the category's household names, so bid-ask spreads are worth checking before trading.

Full AGG profile⁠

Full VCOB profile⁠