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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 XOP: how they differ

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

iShares MBS ETF and State Street(R) SPDR(R) S&P(R) Oil & Gas Exploration & Production ETF.

What they hold in common

By the books each fund has filed, MBB and XOP 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 XOP
BLACKROCK CASH CL INST SL AGENCY 7.26%PBF ENERGY INC CLASS A 3.89%
GNMA2 SF 30YR 0.09%HF SINCLAIR CORP 3.27%
GNMA II 30YR SF - JUMBO-CONFORMING 0.08%DELEK US HOLDINGS INC 3.27%
GNMA2 SINGLE FAMILY 30YR 0.04%VALERO ENERGY CORP 3.21%
GNMA II 30YR 0.03%MARATHON PETROLEUM CORP 3.20%
GNMA2 30YR TBA(REG C) 0.03%PAR PACIFIC HOLDINGS INC 3.12%
UMBS 15YR TBA(REG B) 0.03%PHILLIPS 66 3.06%
FNMA 30YR UMBS MEGA REMIC SUPER 0.02%CALUMET INC 2.77%

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 Sep 10, 2026.

MBB and XOP on the fields both publish, as of Sep 13, 2026. Source: ETFIQ.
MBB
iShares MBS ETF
XOP
State Street(R) SPDR(R) S&P(R) Oil & Gas Exploration & Production ETF
Where it sitsCore index fundCore index fund
IssueriSharesState Street
What it isMbsSPDR S&P Oil & Gas Exploration & Production
Total return, 1 year−0.1%+52.4%
S&P 500 over the same days+17.5%+17.5%
Gap to the S&P 500−17.6 pts+34.9 pts
Expense ratio0.04%0.35%
Holdings259954

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.

XOP in plain words

XOP is a commodity fund tracking the SPDR S&P Oil & Gas Exploration & Production. Over the year to Sep 11, 2026 it returned +52.4% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.35% a year. It sat 26.8% below its high of Jun 23, 2014 on Sep 11, 2026.

Questions people ask

Which returned more over the last year, MBB or XOP?
In the year to Sep 13, 2026, with distributions reinvested, MBB returned −0.1% and XOP returned +52.4%, so XOP returned more. One year is one year; the longer windows are in the table.
Which is cheaper, MBB or XOP?
MBB charges 0.04% a year and XOP charges 0.35%, so MBB 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 XOP, 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 XOP, data as of Sep 13, 2026. https://etfiq.com/compare/any/mbb-vs-xop Free to use with attribution; the underlying files are at Open data.

A comparison is not a recommendation. Standards and sources