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Data as of Sep 21, 2026.

ETFIQetfiq.com · independent ETF data

ETHA vs MBB: how they differ

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

iShares Ethereum Trust ETF and iShares MBS ETF.

What they hold in common

By the books each fund has filed, ETHA and MBB hold 0% of their money in the same securities at the same weight.

Positions ETHA and MBB both hold, largest shared weight first
HoldingETHAMBB
USD CASH0.00%-5.48%
Only in each
Only in ETHAOnly in MBB
ETHER 100.00%BLACKROCK CASH CL INST SL AGENCY 6.95%
FHLMC 30YR UMBS SUPER 1.02%
GNMA2 30YR TBA(REG C) 0.74%
GNMA2 30YR TBA(REG C) 0.66%
UMBS 30YR TBA(REG A) 0.66%
UMBS 30YR TBA(REG A) 0.60%
GNMA2 30YR 0.58%
GNMA2 30YR TBA(REG C) 0.57%

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 18, 2026.

ETHA and MBB on the fields both publish, as of Sep 21, 2026. Source: ETFIQ.
ETHA
iShares Ethereum Trust ETF
MBB
iShares MBS ETF
Where it sitsCore fundCore fund
IssueriSharesiShares
What it isHolds etherTracks an index of MBS
Total return, 1 year−42.6%+0.3%
S&P 500 over the same days+16.6%+16.6%
Gap to the S&P 500−59.2 pts−16.3 pts
Expense ratio0.25%0.04%
Holdings211214
Net assets$9.2bn$38.9bn

ETHA in plain words

ETHA holds ether. Over the year to Sep 18, 2026 it returned −42.6% with distributions reinvested, against +16.6% for the S&P 500 and +21.8% for the Nasdaq-100. The prospectus expense ratio is 0.25% a year. It sat 45.6% below its high of Aug 22, 2025 on Sep 18, 2026.

MBB in plain words

MBB tracks an index of MBS. Over the year to Sep 18, 2026 it returned +0.3% with distributions reinvested, against +16.6% for the S&P 500 and +21.8% for the Nasdaq-100. The prospectus expense ratio is 0.04% a year. It sat 3.4% below its high of Feb 27, 2026 on Sep 18, 2026.

Questions people ask

Which returned more over the last year, ETHA or MBB?
In the year to Sep 21, 2026, with distributions reinvested, ETHA returned −42.6% and MBB returned +0.3%, so MBB returned more.
Which is cheaper, ETHA or MBB?
ETHA charges 0.25% 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.

ETHA against MBB, ETFIQ, data as of Sep 21, 2026. Every figure is calculated from a named public source; the method is at etfiq.com/methodology. A comparison is not a recommendation.

Cite this page. ETFIQ, ETHA against MBB, data as of Sep 21, 2026. https://etfiq.com/compare/any/etha-vs-mbb Free to use with attribution; the underlying files are at Open data.

A comparison is not a recommendation. Standards and sources