iShares MBS ETF
MBBNASDAQBlackRockFixed Income
As of Oct 16, 2026 close
- Assets (AUM)
- $37.10B
- Expense ratio
- 0.04%
- Dividend yield
- 4.49%
- Holdings
- 11,134
- 52-week range
- $88.58$96.97
- Volume (live)
- -
- Avg. volume (3M)
- 7.29M
MBB ETF: iShares MBS ETF - Price, Holdings & Analysis
iShares MBS ETF Price Chart
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Financial Metrics & Key Statistics
Fund characteristics, expense ratio, dividend yield, and performance metrics
| Day's Range | $90.31 - $90.78 |
|---|---|
| 52-Week High | $96.97 |
| 52-Week Low | $88.58 |
| Open | $90.43 |
| Volume (last close) | 2.63M |
| Average Volume (3M) | 7.29M |
| 1 Day Change | +0.66% |
|---|---|
| 1 Month Change | −1.33% |
| 6 Month Change | −5.19% |
| YTD Change | −4.78% |
| 1 Year Change | −5.52% |
| 5 Year Change | −16.06% |
| 10 Year Change | −17.41% |
| Annual Dividend | $4.07 |
|---|---|
| Dividend Yield | 4.49% |
| Last Dividend Ex-Date | Oct 1, 2026 |
| Dividend Growth YoY | +4.53% |
| Years Dividend Growth | 4 |
| Assets (AUM) | $37.10B |
|---|---|
| Expense Ratio | 0.04% |
| Total Holdings | 11,134 |
| Inception Date | Mar 12, 2007 |
| 50-Day MA | $91.70 |
|---|---|
| 200-Day MA | $94.03 |
| RSI | 42.46 |
| Stochastic %K | 80.23 |
| Stochastic %D | 63.17 |
Source: Exchange price data and fund disclosures. Data as of Oct 16, 2026. Data sources and methodology
MBB at a Glance
iShares MBS ETF (MBB) is a fixed income ETF from BlackRock, launched in March 2007. It manages $37.10B in assets and charges a 0.04% expense ratio, about $4 a year per $10,000 invested.
As of its Apr 4, 2026 holdings, it holds 11,134 positions. The largest are BlackRock Cash Funds Instl SL Agency (BISXX, 6.07%), Government National Mortgage Association 5.5% (G2SF.5.5 4.11, 1.09%) and Federal National Mortgage Association 5% (FNCL.5 4.11, 1.07%). The top 10 holdings make up 12.9% of the fund.
It pays distributions yielding 4.49% at the Oct 16, 2026 close, $4.07 per share over the trailing 12 months. As of the Oct 16, 2026 close, the share price is down 5.5% over one year, down 16.1% over five years and down 17.4% over ten years (price change, excluding distributions).
Frequently Asked Questions About iShares MBS ETF
What is the current price of MBB?
The latest MBB price is $90.52 (Oct 16, 2026 close). The 52-week range is $88.58–$96.97. The share price is down 5.5% over the past year (price change, excluding distributions).
What is the expense ratio for MBB?
MBB's annual expense ratio is 0.04%. This represents the yearly cost of holding the fund, deducted from total returns. Compare with similar Fixed Income ETFs in the ETF Screener.
Does MBB pay dividends?
Yes, MBB pays a 4.49% dividend yield (trailing 12 months, at the Oct 16, 2026 close). The most recent ex-dividend date was October 1, 2026. View full dividend history in the Dividends section.
What are the top holdings of MBB?
As of Apr 4, 2026, MBB's largest holdings are BlackRock Cash Funds Instl SL Agency (6.1%), Government National Mortgage Association 5.5% (1.1%), Federal National Mortgage Association 5% (1.1%) (combined weight: 8.2%). The fund holds 11134 total positions. View the complete portfolio breakdown in the Holdings section.
How does MBB compare to similar ETFs?
Compare MBB (0.04% expense ratio, $37.10B AUM) against similar Fixed Income ETFs using the ETF Screener. Filter by expense ratio, dividend yield, and performance to find alternatives.