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Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.

ETFIQetfiq.com · independent ETF data

MBB vs VTIP: how they differ

MBB and VTIP hold 0% of their weight in the same names, and VTIP returned more over the year.

iShares MBS ETF and Vanguard Short-Term Inflation-Protected Securities Index Fund.

What they hold in common

By the books each fund has filed, MBB and VTIP hold 0% of their money in the same securities at the same weight.

Largest positions each one holds and the other does not
Only in MBBOnly in VTIP
BLACKROCK CASH CL INST SL AGENCY 7.26%United States Treasury Inflation Indexed 5.44%
GNMA2 SF 30YR 0.09%United States Treasury Inflation Indexed 5.38%
GNMA II 30YR SF - JUMBO-CONFORMING 0.08%United States Treasury Inflation Indexed 5.36%
GNMA2 SINGLE FAMILY 30YR 0.04%United States Treasury Inflation Indexed 5.19%
GNMA II 30YR 0.03%United States Treasury Inflation Indexed 5.02%
GNMA2 30YR TBA(REG C) 0.03%United States Treasury Inflation Indexed 4.88%
UMBS 15YR TBA(REG B) 0.03%United States Treasury Inflation Indexed 4.87%
FNMA 30YR UMBS MEGA REMIC SUPER 0.02%United States Treasury Inflation Indexed 4.79%

Weight overlap is an ETFIQ calculation: for every security both funds hold, the smaller of the two weights, summed. Above 50%, holding both is close to holding one of them twice. Holdings dated Jun 30, 2026 and Sep 10, 2026.

MBB and VTIP on the fields both publish, as of Sep 13, 2026. Source: ETFIQ.
MBB
iShares MBS ETF
VTIP
Vanguard Short-Term Inflation-Protected Securities Index Fund
Where it sitsCore index fundCore index fund
IssueriSharesVanguard
What it isMbsShort-Term Inflation-Protected Securities
Total return, 1 year−0.1%+1.7%
S&P 500 over the same days+17.5%+17.5%
Gap to the S&P 500−17.6 pts−15.8 pts
Expense ratio0.04%0.03%
Holdings259925

MBB in plain words

MBB is a bond fund tracking the Mbs. Over the year to Sep 11, 2026 it returned −0.1% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.04% a year. It sat 3.3% below its high of Feb 27, 2026 on Sep 11, 2026.

VTIP in plain words

VTIP is a bond fund tracking the Short-Term Inflation-Protected Securities. Over the year to Sep 11, 2026 it returned +1.7% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.03% a year.

Questions people ask

Which returned more over the last year, MBB or VTIP?
In the year to Sep 13, 2026, with distributions reinvested, MBB returned −0.1% and VTIP returned +1.7%, so VTIP returned more. One year is one year; the longer windows are in the table.
Which is cheaper, MBB or VTIP?
MBB charges 0.04% a year and VTIP charges 0.03%, so VTIP is cheaper. Fees come from each fund's prospectus.

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Where these figures came from

ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.

MBB against VTIP, ETFIQ, data as of Sep 13, 2026. Every figure is arithmetic on a named public source; the method is at etfiq.com/methodology. A comparison is not a recommendation.

Cite this page. ETFIQ, MBB against VTIP, data as of Sep 13, 2026. https://etfiq.com/compare/any/mbb-vs-vtip Free to use with attribution; the underlying files are at Open data.

A comparison is not a recommendation. Standards and sources