Compare ETFs
Fees, size, distributions, currency exposure and holdings overlap for two to four funds, side by side.
Side by side
| Measure | MBBiShares MBS ETF | BNDVanguard Total Bond Market ETF |
|---|---|---|
| Market | USNasdaq | USNasdaq |
| Issuer | iShares | Vanguard |
| Asset class | Fixed income · US | Fixed income · US |
| Expense ratio | 0.04%Net expense ratio, filed 18 Jun 2026 | 0.03%Expense ratio, filed 28 Apr 2026 |
| Net assets | $38.7BAs of 31 May 2026 | $397.1BAs of 30 Jun 2026 |
| Holdings | 11,146As of 31 May 2026 | 17,409As of 30 Jun 2026 |
| 12-month distribution yield | 4.50% | 4.16% |
| Distributions | Monthly$4.0700 in 12 months | Monthly$2.9400 in 12 months |
| Last price | $90.4920 Oct 2026, 20:00 UTC | $70.7520 Oct 2026, 20:00 UTC |
Holdings overlap
Weighted overlap is the sum, over the securities both funds hold, of the smaller of the two weights. 0% means no shared holdings; 100% means identical portfolios.
| Fund | MBB | BND |
|---|---|---|
| MBB | Same fund | 3.9%at least |
| BND | 3.9%at least | Same fund |
MBB and BND
- Weighted overlap
- 3.9%
- Holdings in common
- 216
- MBB holdings also in BND
- 10.8% by count
- BND holdings also in MBB
- 10.9% by count
| Holding | Weight in MBB | Weight in BND | Overlap | Matched by |
|---|---|---|---|---|
| Fannie MaeFannie Mae Pool US31418DYX47 | 0.12% | 0.06% | 0.06% | ISIN |
| Government National Mortgage AssociationGinnie Mae II Pool US3618N6BE68 | 0.06% | 0.06% | 0.06% | ISIN |
| Government National Mortgage AssociationGinnie Mae II Pool US3618N5A258 | 0.15% | 0.05% | 0.05% | ISIN |
| Fannie MaeFannie Mae Pool US31418DYB27 | 0.30% | 0.05% | 0.05% | ISIN |
| Fannie MaeFannie Mae Pool US31418DV742 | 0.05% | 0.06% | 0.05% | ISIN |
| Fannie MaeFannie Mae Pool US31418DVA70 | 0.11% | 0.05% | 0.05% | ISIN |
| Freddie MacFreddie Mac Pool US3132DWBB81 | 0.22% | 0.04% | 0.04% | ISIN |
| Government National Mortgage AssociationGinnie Mae II Pool US3618N5A332 | 0.55% | 0.04% | 0.04% | ISIN |
| Freddie MacFreddie Mac Pool US3132DWBP77 | 1.05% | 0.04% | 0.04% | ISIN |
| Government National Mortgage AssociationGinnie Mae II Pool US36180AAF03 | 0.04% | 0.07% | 0.04% | ISIN |
How overlap is measured
Each fund's latest public Form N-PORT report lists its positions with the percent of net assets each one makes up. For every security both funds hold, the smaller of its two weights is counted, and those are added up. If fund A holds a stock at 6% and fund B at 4%, that stock adds 4 percentage points.
Securities are matched by ISIN first, then by CUSIP (a US or Canadian ISIN contains the CUSIP), and only as a last resort by issuer name, for non-debt holdings where one fund gives no identifier. Repeated lines of the same security in one fund are added together, and each security is matched once.
Cash funds, repurchase agreements, derivative contracts and short positions are left out because their reported value is not comparable exposure. For funds with more than 2,000 positions only the largest 2,000 are stored, so the result is a lower bound and the possible extra is shown. Reports can be for different month ends, and funds trade between reports.
The count-based shares show how many of one fund's holdings the other also holds, which can be high even when overlap by weight is low. Read more in where the ETF data comes from.
Currency exposure
| Currency | MBB | BND |
|---|---|---|
| US dollar (USD) | 104.9% | 99.7% |