IBDS vs TBUX: Differences, Returns & Fees

IBDS's duration was 0.8 years on Jul 31, 2026 and TBUX's 0.7 on May 31, 2026; IBDS charges 0.10% to TBUX's 0.17%. Net assets: $4.0bn on Oct 20, 2026 for iShares iBonds Dec 2027 Term Corporate ETF, and $1.9bn on Oct 19, 2026 for T. Rowe Price Ultra Short-Term Bond ETF.

Ask IQ about this page

Ask IQ about IBDS and TBUX

Answers cite the figures on this page.

IBDS costs 0.07 points a year less; their one-year returns differ by 0.6 points; IBDS is 2.0 times larger.

IBDS vs TBUX: Differences, Returns & Fees
IBDSTBUX
Expense ratio0.10%0.17%
Net assets, as of Oct 19, 2026$4.0bn$1.9bn
Total return, 1 year+3.3%+3.9%
What it tracksnot read by ETFIQNo index, actively managed
Holdings in commonreport dates differ

Holdings in common uses holdings dated May 31, 2026 and Jul 31, 2026.

+3.3%
IBDS total return, 1 year
+3.9%
TBUX total return, 1 year
0.10%
IBDS expense ratio
0.17%
TBUX expense ratio

Get IBDS and TBUX fund flows by email, every Monday.

Plus the Friday ETF note. Confirm from the link that arrives, and unsubscribe in one click. See Privacy.

Client brief · page 1 of 2Report BR-FE6E7B2E18

IBDS and TBUX are built for the same job. How do they differ in cost, holdings and results?

  1. What each follows. IBDS follows not read by ETFIQ and TBUX follows No index, actively managed.
  2. One-year total return (similar). Over 1 year to Oct 20, 2026 IBDS returned +3.3% and TBUX +3.9% with distributions reinvested, a gap of 0.6 points.
  3. Number of holdings (similar). IBDS holds 647 positions and TBUX holds 622.

Data as of Oct 20, 2026. The differences are picked by a fixed rule, in a fixed order; the PDF prints it. Page 2 has the returns, overlap, risks and sources.

Take this comparison to a client

The two-page PDF for this pair is coming. Save the comparison to follow its changes. Free. It needs an email sign-in, once.

Not advice. The brief uses the figures on this page, with the data date and a report id. Saved comparisons are listed on your saved page; privacy.

On the same fields

IBDS
iShares iBonds Dec 2027 Term Corporate ETF
TBUX
T. Rowe Price Ultra Short-Term Bond ETF
Where it sits Bond ETF Bond ETF
What it is Tracks an index Actively managed
Total return, 1 year +3.3% +3.9%
Its benchmark over the same days not measured −1.9% (AGG)
Gap to its benchmark not measured +5.8 pts vs AGG
Expense ratio 0.10% 0.17%
Holdings 647 622
Net assets, IBDS as of Oct 20, 2026 and TBUX as of Oct 19, 2026 $4.0bn $1.9bn

IBDS and TBUX on the fields both publish, as of Oct 20, 2026. Source: ETFIQ.

About IBDS

IBDS tracks an index. Over the year to Oct 20, 2026 it returned +3.3% with distributions reinvested. The prospectus expense ratio is 0.10% a year.

About TBUX

TBUX is actively managed and tracks no index. Over the year to Oct 20, 2026 it returned +3.9% with distributions reinvested, against −1.9% for its benchmark, the Bloomberg U.S. Aggregate Bond Index. The prospectus expense ratio is 0.17% a year.

Questions people ask

Which returned more over the last year, IBDS or TBUX?
In the year to Oct 20, 2026, with distributions reinvested, IBDS returned +3.3% and TBUX +3.9%.
Which is cheaper, IBDS or TBUX?
IBDS is cheaper, by 0.07 percentage points a year. That is about $7 on $10,000 held for a year. Fees come from each fund's prospectus.
Cite this pageCitation, APA and Markdown

ETFIQ, IBDS against TBUX, data as of Oct 20, 2026. https://etfiq.com/compare/any/ibds-vs-tbux

Open data

Free to use with attribution for figures ETFIQ computes; issuer data stays under its owner's terms.