MBB Fees and Costs — iShares MBS ETF
Data updated: 2026-07-24
The net expense ratio is 0.04%. There are no sales loads or redemption fees. Portfolio turnover was 153%.
MBB Fees and Expenses
Annual operating expenses and sales charges of MBB. Prospectus, as of February 28, 2026.
| Annual operating expenses | |
|---|---|
| Management fee | 0.04% |
| 12b-1 fee | — |
| Other expenses | 0.00% |
| Gross expense ratio | 0.04% |
| Fee waiver | — |
| Net expense ratio | 0.04% |
| Sales charges | |
|---|---|
| Max front load | — |
| Max deferred load | — |
| Redemption fee | — |
| Expense limitation in place (N-CEN) | Yes |
| Fees waived or reduced during the year | Yes |
| Waived fees subject to recoupment | No |
MBB Costs Over Time
On $10,000 invested in MBB, assuming 5% a year before costs, total costs come to $26 over 5 years, cutting the return by 0.04% a year. Illustration, not a forecast: it assumes today's net expense ratio throughout (a fee waiver may end).
| $10,000 invested | Sell after 1 year | Sell after 3 years | Sell after 5 years |
|---|---|---|---|
| Value before costs | $10,500 | $11,576 | $12,763 |
| Fund expenses (net expense ratio 0.04%) | $4 | $13 | $23 |
| Lost growth on money paid in costs | $0 | $1 | $2 |
| Total costs | $4 | $14 | $26 |
| Value after costs | $10,496 | $11,562 | $12,737 |
| Impact on return, per year | 0.04% | 0.04% | 0.04% |
MBB Trading Costs
Brokerage costs reported on SEC Form N-CEN for the fiscal year ending February 28, 2026.
- Explicit cost rate (commissions ÷ average net assets): —
- Total broker commissions: —
- Bought from dealers (principal trades, not a cost): $140.4B
- Portfolio turnover (prospectus): 153%
- Securities lending: none during the year
MBB Dealer Counterparties
Securities bought directly from dealers (principal trades).
| Broker | Amount | Share |
|---|---|---|
| Morgan Stanley & Co. LLC | $22.9B | 16.32% |
| Citigroup Global Markets Inc. | $22.6B | 16.14% |
| Goldman Sachs & Co. LLC | $21.9B | 15.62% |
| BofA Securities, Inc. | $21.4B | 15.27% |
| BlackRock Funds III - BlackRock Cash Funds: Institutional | $16.1B | 11.50% |
| J.P. Morgan Securities LLC | $15.8B | 11.26% |
| Barclays Capital Inc. | $11.3B | 8.03% |
| Wells Fargo Securities, LLC | $5.3B | 3.75% |
| Nomura Securities International, Inc. | $2.4B | 1.70% |
| BNP Paribas Securities Corp. | $559.6M | 0.40% |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.