Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
MUB vs VOO: how they differ
MUB and VOO hold 0% of their weight in the same names, and VOO returned more over the year.
iShares National Muni Bond ETF and Vanguard 500 Index Fund.
What they hold in common
By the books each fund has filed, MUB and VOO hold 0% of their money in the same securities at the same weight.
| Only in MUB | Only in VOO |
|---|---|
| Board of Regents of the University of Te 0.20% | NVIDIA Corp 7.53% |
| New York State Thruway Authority 0.16% | Apple Inc 6.61% |
| New York State Dormitory Authority 0.14% | Microsoft Corp 4.31% |
| Houston Higher Education Finance Corp. 0.13% | Amazon.com Inc 3.63% |
| Northwest Independent School District 0.13% | Alphabet Inc 3.26% |
| Ohio State University (The) 0.13% | Broadcom Inc 2.78% |
| State of New Jersey 0.13% | Alphabet Inc 2.60% |
| State of California 0.13% | Micron Technology Inc 2.02% |
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 Jun 30, 2026 and May 31, 2026.
| MUB iShares National Muni Bond ETF | VOO Vanguard 500 Index Fund | |
|---|---|---|
| Where it sits | Core index fund | Core index fund |
| Issuer | iShares | Vanguard |
| What it is | National Muni Bond | S&P 500 |
| Total return, 1 year | +0.1% | +17.6% |
| S&P 500 over the same days | +17.5% | +17.5% |
| Gap to the S&P 500 | −17.4 pts | +0.1 pts |
| Expense ratio | 0.05% | 0.03% |
| Holdings | 6603 | 506 |
MUB in plain words
MUB is a bond fund tracking the National Muni Bond. 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 0.05% a year. It sat 3.6% below its high of Jul 6, 2026 on Sep 11, 2026.
VOO in plain words
VOO is an index equity fund tracking the S&P 500. Over the year to Sep 11, 2026 it returned +17.6% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100. The prospectus expense ratio is 0.03% a year. By its holdings filed for Jun 30, 2026, 100% of the fund by weight is stocks the S&P 500 also holds, across 506 positions, with the top ten at 36.5%.
Questions people ask
- Which returned more over the last year, MUB or VOO?
- In the year to Sep 12, 2026, with distributions reinvested, MUB returned +0.1% and VOO returned +17.6%, so VOO returned more. One year is one year; the longer windows are in the table.
- Which is cheaper, MUB or VOO?
- MUB charges 0.05% a year and VOO charges 0.03%, so VOO 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.
Cite this page. ETFIQ, MUB against VOO, data as of Sep 12, 2026. https://etfiq.com/compare/any/MUB-VOO Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources