Which returned more over the last year, MBB or SGOV?

In the year to Oct 28, 2026, with distributions reinvested, MBB returned −0.8% and SGOV +3.7%.

Which is cheaper, MBB or SGOV?

MBB is cheaper, by 0.05 percentage points a year. That is about $5 on $10,000 held for a year. Fees come from each fund's prospectus.

Data as of Oct 28, 2026.

Across categories

MBB vs SGOV: Differences, Returns & Fees

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On Aug 31, 2026 MBB's duration was 5.7 years and SGOV's 0.1; MBB charges 0.04% to SGOV's 0.09%.

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Net assets: $35.5bn on Oct 28, 2026 for iShares MBS ETF, and $117.0bn on Oct 27, 2026 for iShares 0-3 Month Treasury Bond ETF.

MBB on its own →SGOV on its own →

At a glance

−0.8%

MBB total return, 1 year

+3.7%

SGOV total return, 1 year

0.04%

MBB expense ratio

0.09%

SGOV expense ratio

Pair scorecard

MBB costs 0.05 points a year less; their one-year returns differ by 4.5 points; SGOV is 3.3 times larger.

MBB vs SGOV: Differences, Returns & Fees
Measure	MBB	SGOV
Return
Measure	MBB	SGOV
Total return, 1 year	−0.8%	+3.7%
Benchmark
Measure	MBB	SGOV
What it tracks	Bloomberg U.S. MBS Index	ICE 0-3 Month US Treasury Securities Index
Cost and size
Measure	MBB	SGOV
Expense ratio	0.04%	0.09%
Net assets, as of Oct 26, 2026	$35.6bn	$116.9bn
Holdings
Measure	MBB	SGOV
Holdings in common	0%

Holdings in common uses holdings dated Aug 31, 2026. Method

Risk and return

Jun 5, 2020 to Oct 23, 2026 · 333 weekly returns

MBB SGOV

Return

Total return edge SGOV −0.3% +20.8%

Annualized edge SGOV 0.0% +3.0%

Price return edge SGOV −17.7% +0.6%

Risk

Volatility edge SGOV 5.8% 0.3%

Max drawdown edge SGOV −17.4% 0.0%

Risk-adjusted

Sharpe edge SGOV −0.51 −0.46

Sortino edge SGOV −0.71 −0.57

Calmar 0.00 Not measured

Reading

SGOV returned more: +20.8% to −0.3%. SGOV swung less: 0.3% to 5.8%. SGOV fell less at its worst: 0.0% to −17.4%.

Full scorecard

9 measures, with how each is measured Open ↓

Risk and return: MBB vs SGOV: Differences, Returns & Fees
Measure	MBB	SGOV	Edge	How it is measured
Return
Total return	−0.3%	+20.8%	SGOV	Price change plus distributions, reinvested.
Annualized	0.0%	+3.0%	SGOV	Total return as a yearly rate.
Price return	−17.7%	+0.6%	SGOV	Price change alone, distributions left out.
Risk
Volatility	5.8%	0.3%	SGOV	Spread of weekly returns, annualized. Lower is steadier.
Downside deviation	4.2%	0.2%	SGOV	Like volatility, counting only weeks below the Treasury bill rate.
Max drawdown	−17.4%	0.0%	SGOV	Deepest fall from a high to the low after it.
Risk-adjusted
Sharpe	−0.51	−0.46	SGOV	Return above Treasury bills per unit of volatility.
Sortino	−0.71	−0.57	SGOV	Return above Treasury bills per unit of downside deviation.
Calmar	0.00	Not measured		Annualized return divided by the max drawdown.

Computed by ETFIQ from Tiingo daily prices and ETFIQ's distribution records, 333 weekly returns. Cash rate: the 13-week Treasury bill.

What they share

By the books each fund has filed, MBB and SGOV hold 0% of their money in the same securities at the same weight. Holdings dated Aug 31, 2026.

50%

0 half 100%

half

0% in common

Positions both hold · largest shared weight first MBB SGOV

Only in one fund ↓

Only in MBB

Ginnie Mae, due Sep 1, 2056 1.05%

Freddie Mac Pool, due May 1, 2051 0.98%

Uniform Mortgage-Backed Security, TBA, due Sep 1, 2056 0.85%

Uniform Mortgage-Backed Security, TBA, due Sep 1, 2056 0.70%

Ginnie Mae, due Sep 1, 2056 0.53%

Ginnie Mae II Pool, due Nov 20, 2054 0.51%

Ginnie Mae II Pool, due Oct 20, 2051 0.51%

Ginnie Mae II Pool, due Dec 20, 2051 0.50%

Only in SGOV

U.S. Treasury Bills, due Oct 20, 2026 10.18%

U.S. Treasury Bills, due Sep 22, 2026 8.59%

U.S. Treasury Bills, due Oct 13, 2026 8.51%

U.S. Treasury Bills, due Sep 29, 2026 6.82%

U.S. Treasury Bills, due Oct 27, 2026 6.76%

U.S. Treasury Bills, due Sep 1, 2026 6.63%

U.S. Treasury Bills, due Sep 15, 2026 6.04%

U.S. Treasury Bills, due Oct 29, 2026 5.18%

Check overlap with more funds →

Side by side

MBB iShares MBS ETF SGOV iShares 0-3 Month Treasury Bond ETF

Where it sits Bond ETF Bond ETF

Issuer iShares iShares

What it is Tracks an index of mortgage-backed securities Tracks an index of 0-3 month T-bills

Total return, 1 year −0.8% +3.7%

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% 0.09%

Holdings 10813 22

Net assets, MBB as of Oct 28, 2026 and SGOV as of Oct 27, 2026 $35.5bn $117.0bn

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

Client brief · page 1 of 2 Report BR-E3DE2374E6

MBB and SGOV do different jobs. What does each one do in a portfolio?

What each follows. MBB follows Bloomberg U.S. MBS Index and SGOV follows ICE 0-3 Month US Treasury Securities Index.
Holdings in common. 0% of the weight is in the same securities (holdings dated Aug 31, 2026).
One-year total return. Over 1 year to Oct 28, 2026 MBB returned −0.8% and SGOV +3.7% with distributions reinvested, a gap of 4.5 points.

Data as of Oct 28, 2026.

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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.

SGOV

SGOV tracks an index of 0-3 month T-bills. Over the year to Oct 28, 2026 it returned +3.7% with distributions reinvested. The prospectus expense ratio is 0.09% a year.

Questions people ask

Which returned more over the last year, MBB or SGOV?: In the year to Oct 28, 2026, with distributions reinvested, MBB returned −0.8% and SGOV +3.7%.
Which is cheaper, MBB or SGOV?: MBB is cheaper, by 0.05 percentage points a year. That is about $5 on $10,000 held for a year. Fees come from each fund's prospectus.

Other comparisons

BIL vs MBB MBB vs VBIL MBB vs VUSB MBB vs SHV SGOV vs VGSH SGOV vs VGIT SGOV vs VCSH SGOV vs TLT

Where to next

MBB on its own →SGOV on its own →Hold both: look the portfolio through →Rankings →MBB dividend history →MBB holdings →SGOV dividend history →SGOV holdings →Standards and sources →

Sources and dates

MBB and SGOV filings on SEC EDGAR ↗

MBB and SGOV prospectus with the expense ratio (SEC) ↗

iShares page for MBB ↗

iShares page for SGOV ↗

Links are sources, not endorsements. A comparison is not a recommendation.

How this is computed

Overlap adds up the smaller of the two weights for each security both funds hold.

Cite this pageCitation, APA and Markdown

ETFIQ, MBB against SGOV, data as of Oct 28, 2026. https://etfiq.com/compare/any/mbb-vs-sgov

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Free to use with attribution for data ETFIQ computes; issuer data stays under its owner's terms.