MUB vs TAFM
iShares National Muni Bond ETF against AB Tax-Aware Intermediate Municipal ETF: cost, size, returns, what they hold and how much of it is the same.
Overlap by weight
1%
57 shared positions
Fee gap
23 bp
MUB is cheaper
1-year return gap
0.4 pts
MUB is ahead
Larger fund
MUB
$52.1B
Side by side
| MUB | TAFM | |
|---|---|---|
| Fund | iShares National Muni Bond ETF | AB Tax-Aware Intermediate Municipal ETF |
| Issuer | iShares | AllianceBernstein |
| Category | National Muni | National Muni |
| Expense ratio | 0.05% | 0.28% |
| Assets | $52.1B | $612M |
| Average daily dollar volume | $1.8B | $21M |
| Listed | Sep 7, 2007 | Dec 12, 2023 |
| FrenzyCap score | 99 | 68 |
| 1-month return | −0.3% | −0.6% |
| 3-month return | −2.7% | −3.3% |
| Year to date | −4.3% | −4.3% |
| 1-year return | −4.7% | −5.1% |
| 30-day volatility | 6.3% | 6.5% |
| Worst drawdown, 1 year | −7.9% | −8.2% |
| Trailing 12-month yield | 3.33% | 3.80% |
| Holdings | 7,665 | 585 |
| Top 10 weight | 1.2% | 5.7% |
| Look-through P/E | — | — |
| Holdings vs fair value | — | — |
| Holdings above 200-day average | — | — |
| Net flow, latest 3 reported months | +$2.4B thru May 2026 | +$119M thru May 2026 |
| 30-day implied volatility | 7.5% | — |
| Holdings as of | as of Oct 20, 2026issuer data | as of May 31, 2026SEC filing |
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 · 11% of TAFM| Holding | MUB | TAFM |
|---|---|---|
| CHICAGO ILL TRAN AUTH SALES TA 5%, due Dec 1, 2049 | 0.09% | 0.59% |
| NORTH TEX TWY AUTH REV, due Jan 1, 2033 | 0.06% | 0.13% |
| METROPOLITAN TRANSN AUTH N Y R 5%, due Nov 15, 2039 | 0.05% | 0.06% |
| GRAND PARKWAY TRANSN CORP TEX 4%, due Oct 1, 2045 | 0.04% | 0.39% |
| LONG IS PWR AUTH N Y ELEC SYS 5%, due Sep 1, 2049 | 0.04% | 0.17% |
| CALIFORNIA ST 5%, due Oct 1, 2042 | 0.03% | 0.18% |
| WASHINGTON D C MET AREA TRAN A 5.25%, due Jul 15, 2053 | 0.03% | 0.38% |
| MIAMI-DADE CNTY FLA WTR & SWR 5%, due Oct 1, 2055 | 0.03% | 0.34% |
| TRIBOROUGH BRDG & TUNL AUTH N 5.25%, due May 15, 2064 | 0.03% | 0.17% |
| TRIBOROUGH BRDG & TUNL AUTH N 5.25%, due May 15, 2052 | 0.03% | 0.26% |
| CHICAGO ILL 5%, due Jan 1, 2034 | 0.03% | 0.17% |
| WASHINGTON D C MET AREA TRAN A 5.25%, due Jul 15, 2059 | 0.03% | 0.30% |
| CUYAHOGA CNTY OHIO 5.5%, due Dec 1, 2061 | 0.03% | 0.17% |
| NEW YORK N Y 5%, due Aug 1, 2046 | 0.02% | 0.17% |
| COLORADO ST CTFS PARTN 6%, due Dec 15, 2041 | 0.02% | 0.28% |
| ILLINOIS ST 5.5%, due May 1, 2047 | 0.02% | 0.17% |
| NORTH TEX TWY AUTH REV, due Jan 1, 2035 | 0.02% | 0.12% |
| AMERICAN MUN PWR OHIO INC REV 5%, due Feb 15, 2038 | 0.02% | 0.18% |
| NEW JERSEY ST TRANSN TR FD AUT 5%, due Jun 15, 2045 | 0.02% | 0.17% |
| ONONDAGA N Y CIVIC DEV CORP RE 5.5%, due Dec 1, 2056 | 0.02% | 0.18% |
| TRIBOROUGH BRDG & TUNL AUTH N 5%, due May 15, 2054 | 0.02% | 0.18% |
| TEXAS TRANSN COMMN CENT TEX TP 5%, due Aug 15, 2038 | 0.03% | 0.02% |
| JEFFERSON CNTY ALA SWR REV 5.25%, due Oct 1, 2044 | 0.02% | 0.02% |
| MASSACHUSETTS ST 5%, due Apr 1, 2055 | 0.02% | 0.25% |
| SAN FRANCISCO CALIF BAY AREA R 4%, due Aug 1, 2037 | 0.02% | 0.05% |
Sector mix of the stock holdings
No sector breakdown: these funds hold few classified stocks.
More: full overlap table · MUB holdings · TAFM 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.