MBB ETF

MBB ETF
$93.58
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Fund Essentials - as of Oct 31, 2025

Net Assets
$39.2B
Expense Ratio
0.04%
Dividend Yield (Current)
4.32%
Holdings
11,178
Inception Date
Mar 13, 2007
Fund Family
iShares by BlackRock (US)
Investment Style
PRO
Asset Class
PRO
Legal Structure
PRO
Dividend Frequency
Monthly
SEC 30-Day Yield
PRO

Performance

YTD-0.60%
1 Year+3.70%
3 Year+3.97%
5 Year+0.05%
10 Year+1.10%

Asset Allocation

Bonds: 99.58%
Cash: 0.42%
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Top Holdings

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TickerNameWeight
BISXXBlackrock Cash Funds: Institutional, Sl Agency Shares5.01%
-Ginnie Mae Ii Pool 5.5 11/01/20521.16%
FR SD8146Fhlmc 30Yr Umbs Super 2% Apr 01, 20511.00%
-G2Sf 6 11/230.91%
G2 MA7648Government National Mortgage A 2 10/20/20510.54%
Top 10 Concentration: 11.04%Report Date: Oct 31, 2025
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Dividend Summary

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Dividend Yield (Current)
4.32%
Frequency
Monthly
Latest Distribution
$0.34
Aug 3, 2026
12M Distributions
12 payments
Total: $4.04

Peer Comparison

Benchmark
PRO
Peer outperformance: PRO
Category rank: PRO
This ETF
PRO
Peer Avg
PRO

MBB ETF Overview

MBB ETF (iShares MBS ETF) is managed by iShares by BlackRock (US) with $39.19B in net assets. MBB expense ratio is 0.04%, holding 11178 positions across sectors including Financials. Inception date: 2007-03-13.

MBB performance shows a YTD return of -0.60%. The 1-year return is 3.70% and the 5-year return is 0.05%. MBB dividend yield stands at 4.32%, paid monthly.

MBB top holdings include Blackrock Cash Funds: Institutional, Sl Agency Shares (5.0%), Ginnie Mae Ii Pool 5.5 11/01/2052 (1.2%), Fhlmc 30Yr Umbs Super 2% Apr 01, 2051 (1.0%), G2Sf 6 11/23 (0.9%), Government National Mortgage A 2 10/20/2051 (0.5%). Go to all MBB holdings, MBB sectors, or MBB dividends.

MBB can be compared against other funds. Use MBB overlap to find shared positions, or MBB vs another fund for a side-by-side view. MBB alternatives are available via the screener, along with tax-loss harvesting opportunities.

1 Month
-1.77%
YTD
-0.60%
1 Year
+3.70%
3 Year
+3.97%

Top 10 Holdings (11.0% of portfolio)

#TickerNameSectorWeight
1BISXXBlackrock Cash Funds: Institutional, Sl Agency SharesFinancials5.01%
2-Ginnie Mae Ii Pool 5.5 11/01/2052Other1.16%
3FR SD8146Fhlmc 30Yr Umbs Super 2% Apr 01, 2051Financials1.00%
4-G2Sf 6 11/23Other0.91%
5G2 MA7648Government National Mortgage A 2 10/20/2051Financials0.54%
6G2 MA7766Gnma2 30Yr 2% Dec 20, 2051Financials0.53%
7FN MA4492Fannie Mae Pool 2.0% 12/01/2051Financials0.51%
8FR SD8140Freddie Mac 2 04/01/2051Financials0.49%
9G2 MA7472Gnma Ii P#Ma7472 2.5% 07/20/51Financials0.45%
10-Fannie Mae Or Freddie MacOther0.44%