MBB vs MTGP
iShares MBS ETF against WisdomTree Mortgage Plus Bond Fund: cost, size, returns, what they hold and how much of it is the same.
Overlap by weight
3%
20 shared positions
Fee gap
42 bp
MBB is cheaper
1-year return gap
0.2 pts
MBB is ahead
Larger fund
MBB
$35.2B
Side by side
| MBB | MTGP | |
|---|---|---|
| Fund | iShares MBS ETF | WisdomTree Mortgage Plus Bond Fund |
| Issuer | iShares | WisdomTree |
| Category | Mortgage & Securitized | Mortgage & Securitized |
| Expense ratio | 0.04% | 0.46% |
| Assets | $35.2B | $72M |
| Average daily dollar volume | $690M | $325K |
| Listed | Mar 13, 2007 | Nov 12, 2019 |
| FrenzyCap score | 98 | 39 |
| 1-month return | −1.0% | −1.4% |
| 3-month return | −2.5% | −3.0% |
| Year to date | −4.9% | −4.8% |
| 1-year return | −5.7% | −5.8% |
| 30-day volatility | 6.7% | 5.0% |
| Worst drawdown, 1 year | −8.1% | −7.3% |
| Trailing 12-month yield | 4.50% | 4.68% |
| Holdings | 10,818 | 184 |
| Top 10 weight | 6.0% | 22.4% |
| Look-through P/E | — | — |
| Holdings vs fair value | — | — |
| Holdings above 200-day average | — | — |
| Net flow, latest 3 reported months | −$179M thru May 2026 | −$8.9M thru May 2026 |
| 30-day implied volatility | 7.8% | — |
| 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
3% of MBB · 19% of MTGP| Holding | MBB | MTGP |
|---|---|---|
| GNMA2 30YR, due Oct 20, 2051 | 0.54% | 2.54% |
| FNMA 30YR UMBS, due Dec 1, 2051 | 0.53% | 0.51% |
| GNMA2 30YR, due Dec 20, 2051 | 0.53% | 0.51% |
| GNMA2 30YR, due Sep 20, 2053 | 0.41% | 1.00% |
| GNMA2 30YR, due Sep 20, 2051 | 0.22% | 1.94% |
| GNMA2 30YR, due Oct 20, 2052 | 0.12% | 0.22% |
| GNMA2 30YR, due Jun 20, 2051 | 0.10% | 0.82% |
| FNMA 30YR UMBS, due Sep 1, 2052 | 0.05% | 1.20% |
| FNMA 30YR UMBS, due Feb 1, 2052 | 0.04% | 0.88% |
| FNMA 30YR UMBS, due Aug 1, 2053 | 0.04% | 3.68% |
| GNMA2 30YR, due Dec 20, 2047 | 0.03% | 1.21% |
| GNMA2 30YR, due Jul 20, 2045 | 0.03% | 0.72% |
| FNMA 30YR UMBS, due Sep 1, 2052 | 0.02% | 2.47% |
| GNMA2 30YR, due May 20, 2049 | 0.02% | 0.06% |
| FNMA 30YR, due May 1, 2047 | 0.01% | 0.22% |
| GNMA2 30YR, due Aug 20, 2044 | 0.05% | 0.01% |
| GNMA2 30YR, due Apr 20, 2045 | 0.01% | 0.35% |
| GNMA2 30YR, due Aug 20, 2047 | 0.00% | 0.37% |
| GNMA2 30YR, due Mar 20, 2045 | 0.00% | 0.16% |
| GNMA2 30YR, due Dec 20, 2044 | 0.00% | 0.46% |
Sector mix of the stock holdings
No sector breakdown: these funds hold few classified stocks.
More: full overlap table · MBB holdings · MTGP 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.