Data as of Oct 28, 2026.

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MBB vs XOP: Differences, Returns & Fees

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Over the year to Oct 28, 2026, MBB returned −0.8% to XOP's +62.5%; 0% of their weight is in the same names.

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Net assets: $35.5bn on Oct 28, 2026 for iShares MBS ETF, and $4.6bn on Oct 27, 2026 for State Street SPDR S&P Oil & Gas Exploration & Production ETF.

At a glance
−0.8%
MBB total return, 1 year
+62.5%
XOP total return, 1 year
0.04%
MBB expense ratio
0.35%
XOP expense ratio

Pair scorecard

MBB costs 0.31 points a year less; their one-year returns differ by 63.3 points; MBB is 7.6 times larger.

MBB vs XOP: Differences, Returns & Fees
MeasureMBBXOP
Return
Total return, 1 year−0.8%+62.5%
Drawdown
Below its high24.8%, high on Jun 23, 2014
Benchmark
What it tracksBloomberg U.S. MBS IndexS&P Oil & Gas Exploration & Production Select Industry Index
Cost and size
Expense ratio0.04%0.35%
Net assets, as of Oct 26, 2026$35.6bn$4.7bn
Holdings
Holdings in common0%

Holdings in common uses holdings dated Oct 27, 2026. Method

What they share

0%

By the books each fund has filed, MBB and XOP hold 0% of their money in the same securities at the same weight. Holdings dated Oct 27, 2026.

0 half 100%

half

0% in common

Positions both hold · largest shared weight first MBB XOP
Only in one fund ↓
Only in MBB
BLACKROCK CASH CL INST SL AGENCY 5.45%
FHLMC 30YR UMBS SUPER 1.05%
UMBS 30YR TBA(REG A) 0.60%
GNMA2 30YR 0.59%
GNMA2 30YR 0.54%
FNMA 30YR UMBS 0.53%
GNMA2 30YR 0.53%
GNMA2 30YR 0.52%
Only in XOP
RANGE RESOURCES CORP 3.48%
APA CORP 2.92%
MURPHY OIL CORP 2.89%
OVINTIV INC 2.85%
EOG RESOURCES INC 2.82%
EXXONMOBIL HOLDINGS CORP 2.82%
MARATHON PETROLEUM CORP 2.81%
CONOCOPHILLIPS 2.79%
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Side by side

MBB iShares MBS ETF XOP State Street SPDR S&P Oil & Gas Exploration & Production ETF
Where it sits Bond ETF Stock ETF
What it is Tracks an index of mortgage-backed securities Tracks the S&P Oil & Gas Exploration & Production
Total return, 1 year −0.8% +62.5%
Its benchmark over the same days −1.1% (SPMB) not measured
Gap to its benchmark +0.3 pts vs SPMB not measured
Expense ratio 0.04% 0.35%
Holdings 10813 52
Net assets, MBB as of Oct 28, 2026 and XOP as of Oct 27, 2026 $35.5bn $4.6bn

MBB and XOP on the fields both publish, as of Oct 28, 2026. Source: ETFIQ.

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About each fund
MBB

MBB tracks an index of mortgage-backed securities. Over the year to Oct 28, 2026 it returned −0.8% with distributions reinvested, against −1.1% for its benchmark, the Bloomberg U.S. MBS Index. The prospectus expense ratio is 0.04% a year.

XOP

XOP tracks the S&P Oil & Gas Exploration & Production. Over the year to Oct 28, 2026 it returned +62.5% with distributions reinvested. The prospectus expense ratio is 0.35% a year. It sat 24.8% below its high of Jun 23, 2014 on Oct 28, 2026.

Questions people ask

Which returned more over the last year, MBB or XOP?
In the year to Oct 28, 2026, with distributions reinvested, MBB returned −0.8% and XOP +62.5%.
Which is cheaper, MBB or XOP?
MBB is cheaper, by 0.31 percentage points a year. That is about $31 on $10,000 held for a year. Fees come from each fund's prospectus.
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ETFIQ, MBB against XOP, data as of Oct 28, 2026. https://etfiq.com/compare/any/mbb-vs-xop

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