Data as of Oct 28, 2026.

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MBB vs XLE: Differences, Returns & Fees

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Over the year to Oct 28, 2026, MBB returned −0.8% to XLE's +61.2%; 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 $45.2bn on Oct 27, 2026 for State Street Energy Select Sector SPDR ETF.

At a glance
−0.8%
MBB total return, 1 year
+61.2%
XLE total return, 1 year
0.04%
MBB expense ratio
0.08%
XLE expense ratio

Pair scorecard

MBB costs 0.04 points a year less; their one-year returns differ by 62.0 points; XLE is 1.3 times larger.

MBB vs XLE: Differences, Returns & Fees
MeasureMBBXLE
Return
Total return, 1 year−0.8%+61.2%
Benchmark
What it tracksBloomberg U.S. MBS IndexEnergy Select Sector Index
Cost and size
Expense ratio0.04%0.08%
Net assets, as of Oct 26, 2026$35.6bn$46.1bn
Holdings
Holdings in common0%
In the S&P 500, by weight100%
Top ten holdings, share of the fund78.1%

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

What they share

0%

By the books each fund has filed, MBB and XLE 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 XLE
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 XLE
EXXONMOBIL HOLDINGS CORP 23.98%
CHEVRON CORP 18.21%
CONOCOPHILLIPS 7.18%
MARATHON PETROLEUM CORP 4.67%
PHILLIPS 66 4.41%
VALERO ENERGY CORP 4.26%
WILLIAMS COS INC 4.22%
EOG RESOURCES INC 4.07%
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Side by side

MBB iShares MBS ETF XLE State Street Energy Select Sector SPDR ETF
Where it sits Bond ETF Stock ETF
What it is Tracks an index of mortgage-backed securities Tracks an index of Energy
Total return, 1 year −0.8% +61.2%
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% 0.08%
Holdings 10813 22
Net assets, MBB as of Oct 28, 2026 and XLE as of Oct 27, 2026 $35.5bn $45.2bn

MBB and XLE 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.

XLE

XLE tracks an index of Energy. Over the year to Oct 28, 2026 it returned +61.2% with distributions reinvested. The prospectus expense ratio is 0.08% a year. By its holdings published by its issuer for Oct 27, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 22 positions, with the top ten at 78.1%.

Questions people ask

Which returned more over the last year, MBB or XLE?
In the year to Oct 28, 2026, with distributions reinvested, MBB returned −0.8% and XLE +61.2%.
Which is cheaper, MBB or XLE?
MBB is cheaper, by 0.04 percentage points a year. That is about $4 on $10,000 held for a year. Fees come from each fund's prospectus.
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ETFIQ, MBB against XLE, data as of Oct 28, 2026. https://etfiq.com/compare/any/mbb-vs-xle

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