ETF Exchange > MBB ETF
MBB - ETF Fact Sheet
iShares MBS ETF - USD
Fund Identification
Ticker
MBB
ISIN
US4642885887
Main Metrics
Price
$93.85Expense Ratio
0.04%AuM
$39,324.31MTracking Difference
-0.05%Ratings
Trackinsight rating
★★★★★Official Investment Strategy
The iShares MBS ETF (MBB) seeks to track the investment results of an index composed of investment-grade mortgage-backed pass-through securities issued and/or guaranteed by U.S. government agencies.
MBB's historical prices, performance, and flows
1m returns
-0.57%
1m flows
$0M
* Net total returns
All data as of 17 July 2026
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MBB's characteristics
Manager
Manager statistics
1787 funds, $6,330.41Bn in AUM
Benchmark
Bloomberg U.S. MBS Total Return Index - USD
Replication method
Direct (Physical)
Asset class
Fixed Income
Dividend policy
Distributing
MBB's exposure
Countries
USA
24.77%
Other
75.23%
Sectors
Other sectors
18.35%
Other
81.65%
Top 5 holdings
Other
79.90%
BlackRock Cash Funds - Institutional
6.77%
FR SD8146, 2% 1may2051, USD (ABS)
1.05%
G2 MA7648, 2% 20oct2051, USD (ABS)
0.54%
FN MA4492, 2% 1dec2051, USD (ABS)
0.52%
Total holdings
1,188
Total weight of top 5
88.79%
