SUB vs TAFI
iShares Short-Term National Muni Bond ETF against AB Tax-Aware Short Duration Municipal ETF: cost, size, returns, what they hold and how much of it is the same.
Overlap by weight
1%
35 shared positions
Fee gap
20 bp
SUB is cheaper
1-year return gap
0.6 pts
SUB is ahead
Larger fund
SUB
$13.4B
Side by side
| SUB | TAFI | |
|---|---|---|
| Fund | iShares Short-Term National Muni Bond ETF | AB Tax-Aware Short Duration Municipal ETF |
| Issuer | iShares | AllianceBernstein |
| Category | Short Muni | Short Muni |
| Expense ratio | 0.07% | 0.27% |
| Assets | $13.4B | $1.5B |
| Average daily dollar volume | $163M | $24M |
| Listed | Nov 5, 2008 | Sep 13, 2022 |
| FrenzyCap score | 98 | 73 |
| 1-month return | +1.5% | +1.8% |
| 3-month return | −0.1% | −0.2% |
| Year to date | −0.5% | −0.7% |
| 1-year return | −0.1% | −0.7% |
| 30-day volatility | 2.0% | 2.6% |
| Worst drawdown, 1 year | −3.1% | −3.9% |
| Trailing 12-month yield | 2.57% | 3.12% |
| Holdings | 3,150 | 703 |
| Top 10 weight | 2.5% | 10.0% |
| Look-through P/E | — | — |
| Holdings vs fair value | — | — |
| Holdings above 200-day average | — | — |
| Net flow, latest 3 reported months | +$404M thru Aug 2026 | +$123M thru Aug 2026 |
| 30-day implied volatility | — | — |
| Holdings as of | as of Nov 6, 2026issuer data | as of Aug 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 SUB · 5% of TAFI| Holding | SUB | TAFI |
|---|---|---|
| ILLINOIS ST 5%, due Nov 1, 2027 | 0.14% | 0.19% |
| NEW JERSEY ST TRANSN TR FD AUTH, due Dec 15, 2027 | 0.12% | 0.10% |
| ILLINOIS ST 5.5%, due May 1, 2030 | 0.08% | 0.15% |
| MASSACHUSETTS ST 5.5%, due Aug 1, 2030 | 0.18% | 0.08% |
| DALLAS TEX INDPT SCH DIST 5%, due Feb 15, 2030 | 0.08% | 0.08% |
| MUNICIPAL ELEC AUTH GA 5%, due Jan 1, 2028 | 0.07% | 0.14% |
| NEW JERSEY ST TRANSN TR FD AUT 5%, due Jun 15, 2030 | 0.05% | 0.39% |
| PENNSYLVANIA ST 5%, due Aug 15, 2027 | 0.05% | 0.15% |
| NEW JERSEY ST TRANSN TR FD AUT 5%, due Jun 15, 2028 | 0.04% | 0.15% |
| SAN ANTONIO TEX ELEC & GAS REV 3%, due Dec 1, 2029 | 0.04% | 0.13% |
| WASHINGTON ST 5%, due Aug 1, 2030 | 0.03% | 0.07% |
| INTERMOUNTAIN PWR AGY UTAH PWR 5%, due Jul 1, 2027 | 0.03% | 0.08% |
| GARDEN ST PRESERVATION TR NJ 5.75%, due Nov 1, 2028 | 0.03% | 0.15% |
| NEW JERSEY ST TRANSN TR FD AUT 5%, due Jun 15, 2028 | 0.03% | 0.08% |
| ILLINOIS ST SALES TAX REV 5%, due Jun 15, 2030 | 0.02% | 0.14% |
| SAN ANTONIO TX 3.5%, due Feb 1, 2056 | 0.02% | 0.11% |
| ILLINOIS ST 5%, due May 1, 2028 | 0.02% | 0.09% |
| MILWAUKEE WIS 5%, due Apr 1, 2027 | 0.02% | 0.17% |
| NEW JERSEY ST TRANSN TR FD AUT, due Dec 15, 2026 | 0.02% | 0.09% |
| NEW YORK CITY OF 5%, due Aug 1, 2030 | 0.02% | 0.08% |
| LOS ANGELES CALIF DEPT WTR & P 5%, due Jul 1, 2027 | 0.02% | 0.15% |
| UTAH TRAN AUTH SALES TAX REV 5%, due Jun 15, 2031 | 0.02% | 0.08% |
| CHICAGO ILL TRAN AUTH SALES TA 5%, due Dec 1, 2029 | 0.01% | 0.14% |
| ILLINOIS ST 5%, due Oct 1, 2029 | 0.01% | 0.15% |
| NEW JERSEY ST TRANSN TR FD AUT 5%, due Jun 15, 2027 | 0.01% | 0.27% |
Sector mix of the stock holdings
No sector breakdown: these funds hold few classified stocks.
More: full overlap table · SUB holdings · TAFI 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.