Data as of Sep 21, 2026.
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.
| Holding | ETHA | MBB |
|---|---|---|
| USD CASH | 0.00% | -5.48% |
| Only in ETHA | Only 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 iShares Ethereum Trust ETF | MBB iShares MBS ETF | |
|---|---|---|
| Where it sits | Core fund | Core fund |
| Issuer | iShares | iShares |
| What it is | Holds ether | Tracks 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 ratio | 0.25% | 0.04% |
| Holdings | 2 | 11214 |
| 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.
Other comparisons
Where to next
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.
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