Get the weekly note

Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.

ETFIQetfiq.com · independent ETF data

MBB vs SHV: how they differ

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

iShares MBS ETF and iShares 0-1 Year Treasury Bond ETF.

What they hold in common

By the books each fund has filed, MBB and SHV 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 SHV
Freddie Mac 1.07%United States of America 17.17%
Government National Mortgage Association 0.97%United States of America 12.38%
UMBS, TBA 0.85%United States of America 9.88%
Government National Mortgage Association 0.69%United States of America 8.60%
UMBS, TBA 0.66%United States of America 8.55%
Government National Mortgage Association 0.56%United States of America 8.38%
Government National Mortgage Association 0.55%United States of America 6.85%
Government National Mortgage Association 0.54%United States of America 6.81%

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 May 31, 2026.

MBB and SHV on the fields both publish, as of Sep 12, 2026. Source: ETFIQ.
MBB
iShares MBS ETF
SHV
iShares 0-1 Year Treasury Bond ETF
Where it sitsCore index fundCore index fund
IssueriSharesiShares
What it isMbs0-1 Year Treasury Bond
Total return, 1 year−0.1%+3.6%
S&P 500 over the same days+17.5%+17.5%
Gap to the S&P 500−17.6 pts−13.9 pts
Expense ratio0.04%0.15%
Holdings1114413

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.

SHV in plain words

SHV is a bond fund tracking the 0-1 Year Treasury Bond. Over the year to Sep 11, 2026 it returned +3.6% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.15% a year.

Questions people ask

Which returned more over the last year, MBB or SHV?
In the year to Sep 12, 2026, with distributions reinvested, MBB returned −0.1% and SHV returned +3.6%, so SHV returned more. One year is one year; the longer windows are in the table.
Which is cheaper, MBB or SHV?
MBB charges 0.04% a year and SHV charges 0.15%, so MBB is cheaper. Fees come from each fund's prospectus.

Other comparisons

Where to next

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 SHV, ETFIQ, data as of Sep 12, 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 SHV, data as of Sep 12, 2026. https://etfiq.com/compare/any/MBB-SHV Free to use with attribution; the underlying files are at Open data.

A comparison is not a recommendation. Standards and sources