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

In the year to Sep 13, 2026, with distributions reinvested, BITO returned −34.8% and MBB returned −0.1%, so MBB returned more. One year is one year; the longer windows are in the table.

Which is cheaper, BITO or MBB?

BITO charges 0.95% a year and MBB charges 0.04%, so MBB is cheaper. Fees come from each fund's prospectus.

Data as of Sep 13, 2026. Both funds on the fields they both publish, from the same sources.

ETFIQetfiq.com · independent ETF data

BITO vs MBB: how they differ

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

ProShares Bitcoin ETF and iShares MBS ETF.

What they hold in common

By the books each fund has filed, BITO and MBB 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 BITO	Only in MBB
CME BITCOIN FUT DIGITAL ASSETS 25/SEP/20 81.49%	BLACKROCK CASH CL INST SL AGENCY 7.26%
COINBASE BIT FUT DIGITAL ASSETS 25/SEP/2 14.27%	GNMA2 SF 30YR 0.09%
S&P CME BITCOIN FUTURES DAILY ROLL INDEX 4.24%	GNMA II 30YR SF - JUMBO-CONFORMING 0.08%
	GNMA2 SINGLE FAMILY 30YR 0.04%
	GNMA II 30YR 0.03%
	GNMA2 30YR TBA(REG C) 0.03%
	UMBS 15YR TBA(REG B) 0.03%
	FNMA 30YR UMBS MEGA REMIC SUPER 0.02%

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 and Sep 11, 2026.

BITO and MBB on the fields both publish, as of Sep 13, 2026. Source: ETFIQ.
	BITO ProShares Bitcoin ETF	MBB iShares MBS ETF
Where it sits	Core index fund	Core index fund
Issuer	ProShares	iShares
What it is	Bitcoin	Mbs
Total return, 1 year	−34.8%	−0.1%
S&P 500 over the same days	+17.5%	+17.5%
Gap to the S&P 500	−52.3 pts	−17.6 pts
Expense ratio	0.95%	0.04%
Holdings	3	2599

BITO in plain words

BITO is a digital asset fund tracking the Bitcoin. Over the year to Sep 11, 2026 it returned −34.8% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.95% a year. It sat 40.3% below its high of Oct 6, 2025 on Sep 11, 2026.

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.

Questions people ask

Which returned more over the last year, BITO or MBB?: In the year to Sep 13, 2026, with distributions reinvested, BITO returned −34.8% and MBB returned −0.1%, so MBB returned more. One year is one year; the longer windows are in the table.
Which is cheaper, BITO or MBB?: BITO charges 0.95% a year and MBB charges 0.04%, 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.

BITO against MBB, 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, BITO against MBB, data as of Sep 13, 2026. https://etfiq.com/compare/any/bito-vs-mbb Free to use with attribution; the underlying files are at Open data.

A comparison is not a recommendation. Standards and sources