AGG vs BIV: Differences, Returns & Fees
AGG's duration was 5.8 years on May 31, 2026 and BIV's 5.9 on Jun 30, 2026; both charge 0.03%. Net assets: $137.1bn on Oct 9, 2026 for iShares Core U.S. Aggregate Bond ETF, and $28.1bn on Sep 30, 2026 for Vanguard Intermediate-Term Bond ETF.
Both cost 0.03% a year; their one-year returns differ by 0.7 points; AGG is 4.8 times larger.
Points (pts) are percentage points.
| AGG | BIV | |
|---|---|---|
| Expense ratio | 0.03% | 0.03% |
| Net assets, as of Sep 30, 2026 | $135.7bn | $28.1bn |
| Total return, 1 year | −1.6% | −2.3% |
| What it tracks | Bloomberg U.S. Aggregate Bond Index | not read by ETFIQ |
| Holdings in common | 17% | |
| Below its high | 4.7%, high on Aug 4, 2020 | 5.0%, high on Feb 27, 2026 |
Holdings in common uses holdings dated May 31, 2026 and Jun 30, 2026.
What they hold in common
By the books each fund has filed, AGG and BIV hold 17% of their money in the same securities at the same weight. Above 50%, holding both is close to holding one of them twice. Holdings dated May 31, 2026 and Jun 30, 2026.
half
17% in common
On the same fields
AGG and BIV on the fields both publish, as of Oct 9, 2026. Source: ETFIQ.
AGG in plain words
AGG tracks an index of US aggregate bonds. Over the year to Oct 9, 2026 it returned −1.6% with distributions reinvested, against −1.6% for its benchmark, the Bloomberg U.S. Aggregate Bond Index. The prospectus expense ratio is 0.03% a year. It sat 4.7% below its high of Aug 4, 2020 on Oct 9, 2026.
BIV in plain words
BIV tracks an index. Over the year to Oct 9, 2026 it returned −2.3% with distributions reinvested. It sat 5.0% below its high of Feb 27, 2026 on Oct 9, 2026.
Questions people ask
ETFIQ links to the documents behind every figure; a link is not an endorsement. A comparison is not a recommendation.
How this is computed
Overlap adds up the smaller of the two weights for each security both funds hold.
Cite this pageCitation, APA and Markdown
ETFIQ, AGG against BIV, data as of Oct 9, 2026. https://etfiq.com/compare/any/agg-vs-biv
ETFIQ. (Oct 9, 2026). AGG against BIV. Retrieved from https://etfiq.com/compare/any/agg-vs-biv
[AGG against BIV (ETFIQ, Oct 9, 2026)](https://etfiq.com/compare/any/agg-vs-biv)
Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.