MUB vs RMOP
iShares National Muni Bond ETF against Rockefeller Opportunistic Municipal Bond ETF: cost, size, returns, what they hold and how much of it is the same.
Overlap by weight
0%
9 shared positions
Fee gap
75 bp
MUB is cheaper
1-year return gap
1.5 pts
MUB is ahead
Larger fund
MUB
$52.1B
Side by side
| MUB | RMOP | |
|---|---|---|
| Fund | iShares National Muni Bond ETF | Rockefeller Opportunistic Municipal Bond ETF |
| Issuer | iShares | Rockefeller |
| Category | National Muni | National Muni |
| Expense ratio | 0.05% | 0.80% |
| Assets | $52.1B | $435M |
| Average daily dollar volume | $1.8B | $6.2M |
| Listed | Sep 7, 2007 | Aug 12, 2024 |
| FrenzyCap score | 99 | 47 |
| 1-month return | −0.3% | −2.0% |
| 3-month return | −2.7% | −5.3% |
| Year to date | −4.3% | −5.1% |
| 1-year return | −4.7% | −6.2% |
| 30-day volatility | 6.3% | 9.3% |
| Worst drawdown, 1 year | −7.9% | −9.4% |
| Trailing 12-month yield | 3.33% | 5.48% |
| Holdings | 7,665 | 343 |
| Top 10 weight | 1.2% | 21.7% |
| Look-through P/E | — | — |
| Holdings vs fair value | — | — |
| Holdings above 200-day average | — | — |
| Net flow, latest 3 reported months | +$2.4B thru May 2026 | +$88M thru Jul 2026 |
| 30-day implied volatility | 7.5% | — |
| Holdings as of | as of Oct 20, 2026issuer data | as of Jul 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
0% of MUB · 12% of RMOP| Holding | MUB | RMOP |
|---|---|---|
| TRIBOROUGH BRDG & TUNL AUTH N 5.25%, due May 15, 2064 | 0.03% | 2.33% |
| NEW HOPE HIGHER ED FIN CORP TE 5%, due Mar 15, 2055 | 0.03% | 0.20% |
| DELAWARE TRANSN AUTH U S 301 P, due Jun 1, 2055 | 0.03% | 0.46% |
| CUYAHOGA CNTY OHIO 5.5%, due Dec 1, 2061 | 0.03% | 1.97% |
| PARKER CNTY TEX JR COLLEGE DIST 5%, due Aug 1, 2055 | 0.01% | 2.30% |
| HARRIS CNTY TEX HOSP DIST 5.25%, due Feb 15, 2056 | 0.01% | 1.93% |
| TEXAS TRANSN FIN CORP SH 288 S, due Oct 1, 2055 | 0.01% | 2.41% |
| HARRIS COUNTY TEXAS 5.25%, due Sep 15, 2056 | 0.01% | 0.36% |
| HILLSBOROUGH CNTY FLA AVIATION 5%, due Oct 1, 2044 | 0.00% | 0.02% |
Sector mix of the stock holdings
No sector breakdown: these funds hold few classified stocks.
More: full overlap table · MUB holdings · RMOP 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.