Total Holdings
11,134
Portfolio diversification across 11,134 positions
MBB
(NASDAQ)iShares MBS ETF
$94.86-- (--)
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MBB ETF Holdings: iShares MBS ETF
Complete portfolio holdings with allocation weights, sector breakdown, and geographic exposure for this Fixed Income ETF. Analyze fund diversification and concentration.
Assets Under Management
$39.03B
Total fund assets
Expense Ratio
0.04%
Annual management fee
Fund Issuer
BlackRock
NASDAQ
Portfolio Allocations
Distribution breakdown by sector, asset type, and geographic region. Understand the fund's diversification strategy across markets and asset classes.
Top 25 Holdings by Portfolio Weight
View ticker symbols, company names, asset types, and allocation percentages for each position
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| # | Symbol | Name | Type | Weight |
|---|---|---|---|---|
| 1 | B BISXX | BlackRock Cash Funds Instl SL Agency | Stock | 6.07% |
| 2 | G G2SF.5.5 4.11 | Government National Mortgage Association 5.5% | Stock | 1.09% |
| 3 | F FR.SD8146 | Federal Home Loan Mortgage Corp. 2% | Stock | 1.07% |
| 4 | F FNCL.5 4.11 | Federal National Mortgage Association 5% | Stock | 1.07% |
| 5 | F FNCL.5.5 4.11 | Federal National Mortgage Association 5.5% | Stock | 0.85% |
| 6 | G G2SF.5 4.11 | Government National Mortgage Association 5% | Stock | 0.57% |
| 7 | G G2.MB0025 | Government National Mortgage Association 5% | Stock | 0.57% |
| 8 | G G2.MA7648 | Government National Mortgage Association 2% | Stock | 0.55% |
| 9 | G G2.MA7766 | Government National Mortgage Association 2% | Stock | 0.54% |
| 10 | F FN.MA4492 | Federal Home Loan Mortgage Corp. 2% | Stock | 0.53% |
| 11 | F FR.SD8140 | Federal Home Loan Mortgage Corp. 2% | Stock | 0.51% |
| 12 | G G2SF.6 4.11 | Government National Mortgage Association 6% | Stock | 0.47% |
| 13 | G G2.MA7472 | Government National Mortgage Association 2.5% | Stock | 0.47% |
| 14 | F FN.MA4465 | Federal Home Loan Mortgage Corp. 2% | Stock | 0.45% |
| 15 | F FN.FS4654 | Federal National Mortgage Association 2% | Stock | 0.45% |
| 16 | F FNCL.6 4.11 | Federal National Mortgage Association 6% | Stock | 0.44% |
| 17 | G G2.MA7935 | Government National Mortgage Association 2% | Stock | 0.37% |
| 18 | G G2.MA7367 | Government National Mortgage Association 2.5% | Stock | 0.36% |
| 19 | G G2.MA9171 | Government National Mortgage Association 5.5% | Stock | 0.33% |
| 20 | F FN.MA4281 | Federal Home Loan Mortgage Corp. 2% | Stock | 0.33% |
| 21 | F FN.FS9130 | Federal National Mortgage Association 2% | Stock | 0.33% |
| 22 | F FNCI.2 4.12 | Federal National Mortgage Association 2% | Stock | 0.33% |
| 23 | F FN.MA4437 | Federal Home Loan Mortgage Corp. 2% | Stock | 0.32% |
| 24 | G G2.MA9781 | Government National Mortgage Association 6.5% | Stock | 0.31% |
| 25 | G G2.MA7826 | Government National Mortgage Association 2% | Stock | 0.31% |
Frequently Asked Questions About iShares MBS ETF Holdings
What are the top holdings in MBB?
iShares MBS ETF (MBB) holds 11134 securities. View the complete list of top holdings sorted by portfolio weight, showing each security's ticker symbol, company name, asset type, and allocation percentage.
How concentrated is MBB's portfolio?
Portfolio concentration is measured by the weight of top holdings. A concentrated portfolio has fewer large positions with higher individual weights, while a diversified portfolio distributes holdings more evenly. Review MBB's holdings table to analyze concentration risk.
What is MBB's sector allocation?
The Sector Allocation chart shows how MBB distributes investments across different industries like Technology, Healthcare, Financials, and more. This sector exposure helps understand the fund's industry diversification strategy.
What countries does MBB invest in?
MBB's geographic exposure is shown in the Countries tab under Portfolio Allocations. This reveals the fund's international diversification and exposure to different regions and global markets.
How diversified is MBB ETF?
MBB's diversification can be assessed by reviewing its 11134 holdings, sector allocation, and geographic exposure. A well-diversified ETF spreads investments across multiple securities, sectors, and regions to reduce concentration risk.