MUB vs MUNI
iShares National Muni Bond ETF against PIMCO Intermediate Municipal Bond Active Exchange-Traded Fund: cost, size, returns, what they hold and how much of it is the same.
Overlap by weight
1%
86 shared positions
Fee gap
30 bp
MUB is cheaper
1-year return gap
0.6 pts
MUNI is ahead
Larger fund
MUB
$52.1B
Side by side
| MUB | MUNI | |
|---|---|---|
| Fund | iShares National Muni Bond ETF | PIMCO Intermediate Municipal Bond Active Exchange-Traded Fund |
| Issuer | iShares | PIMCO |
| Category | National Muni | National Muni |
| Expense ratio | 0.05% | 0.35% |
| Assets | $52.1B | $3.5B |
| Average daily dollar volume | $1.8B | $76M |
| Listed | Sep 7, 2007 | Nov 30, 2009 |
| FrenzyCap score | 99 | 72 |
| 1-month return | −0.3% | −0.2% |
| 3-month return | −2.7% | −2.2% |
| Year to date | −4.3% | −3.8% |
| 1-year return | −4.7% | −4.1% |
| 30-day volatility | 6.3% | 5.7% |
| Worst drawdown, 1 year | −7.9% | −7.6% |
| Trailing 12-month yield | 3.33% | 3.41% |
| Holdings | 7,665 | 727 |
| Top 10 weight | 1.2% | 9.3% |
| Look-through P/E | — | — |
| Holdings vs fair value | — | — |
| Holdings above 200-day average | — | — |
| Net flow, latest 3 reported months | +$2.4B thru May 2026 | +$296M thru Jun 2026 |
| 30-day implied volatility | 7.5% | 5.5% |
| Holdings as of | as of Oct 20, 2026issuer data | as of Oct 20, 2026issuer data |
Returns are price returns and exclude distributions. Flows are each fund's own latest reported months and may not cover the same period.
Largest shared holdings
1% of MUB · 13% of MUNI| Holding | MUB | MUNI |
|---|---|---|
| UNIVERSITY TEX UNIV REVS 5%, due Aug 15, 2036 | 0.16% | 0.11% |
| DISTRICT COLUMBIA UNIV REV 5%, due Apr 3, 2035 | 0.09% | 0.39% |
| LOS ANGELES CALIF UNI SCH DIST 5%, due Jul 1, 2034 | 0.08% | 0.25% |
| ILLINOIS ST TOLL HWY AUTH TOLL 5%, due Jan 1, 2036 | 0.06% | 0.15% |
| MARYLAND ST 5%, due Mar 15, 2038 | 0.06% | 0.15% |
| AQUARION WATER AUTHORITY CT 5.25%, due Feb 1, 2033 | 0.05% | 0.53% |
| PENNSYLVANIA ST TPK COMMN TPK 5%, due Dec 1, 2044 | 0.04% | 0.05% |
| SAN ANTONIO TEX ELEC & GAS REV 3.08%, due Dec 1, 2028 | 0.04% | 0.33% |
| NEW YORK N Y CITY TRANSITIONAL 5%, due Nov 1, 2053 | 0.03% | 0.63% |
| NEW YORK ST DORM AUTH ST PERS 4%, due Mar 15, 2034 | 0.03% | 0.13% |
| UNIVERSITY OF CALIFORNIA 5.25%, due May 15, 2039 | 0.03% | 0.12% |
| TRIBOROUGH BRDG & TUNL AUTH N 5.25%, due May 15, 2052 | 0.03% | 0.24% |
| SAN ANTONIO TEX ELEC & GAS REV 5.25%, due Feb 1, 2049 | 0.03% | 0.08% |
| CALIFORNIA (STATE OF) 5%, due Aug 1, 2034 | 0.03% | 0.20% |
| UNIVERSITY OF CALIFORNIA 5.5%, due May 15, 2043 | 0.02% | 0.21% |
| NEW YORK N Y CITY TRANSITIONAL 5.5%, due Nov 1, 2045 | 0.02% | 0.06% |
| UNIVERSITY CALIF REVS 5%, due May 15, 2035 | 0.02% | 0.20% |
| NEW JERSEY ECONOMIC DEV AUTH R 5%, due Nov 1, 2036 | 0.02% | 0.07% |
| CONNECTICUT ST SPL TAX OBLIG R 5%, due Jan 1, 2035 | 0.02% | 0.12% |
| ILLINOIS ST TOLL HWY AUTH TOLL 5%, due Jan 1, 2040 | 0.02% | 0.06% |
| AQUARION WATER AUTHORITY CT 5.25%, due Feb 1, 2031 | 0.02% | 0.24% |
| NORTH TEX TWY AUTH REV 5%, due Jan 1, 2031 | 0.02% | 0.13% |
| NEW YORK ST DORM AUTH SALES TA 5%, due Mar 15, 2044 | 0.02% | 0.07% |
| HOUSTON TEX ARPT SYS REV FOR 5%, due Jul 1, 2030 | 0.02% | 0.10% |
| TEXAS WTR DEV BRD REV 4.88%, due Oct 15, 2048 | 0.02% | 0.13% |
Sector mix of the stock holdings
No sector breakdown: these funds hold few classified stocks.
More: full overlap table · MUB holdings · MUNI holdings
Fund data comes from each fund's SEC filings and issuer disclosures and is shown with the date it is as of. SEC portfolio and flow filings become public about 60 days after the period they cover. Nothing here is investment advice; see Terms.