MBBiShares MBS ETF
Tracks the investment results of the Bloomberg U.S. MBS Index.
By iShares · Launched 2007
Annual Cost
0.04%
#92 of 6,040 · low cost
Fund Size
$39.6B
#92 of 6,040 · large
Return (1Y)
+0.1%
Track Record
19 years
#449 of 6,040 · established
Performance
Total-return NAV · USDGrowth of $10,000
$9,968-0.3%
Total-return NAV, USD. Net of fund fees, before tax.
What's inside
How Beacon categorizes this fundHoldings
By weightConcentration
Top 10 holdings = 11.7% of funddiversified
BLACKROCK CASH FUNDS
5.9%
Freddie Mac
1.1%
Government National Mortgage Association
1.0%
UMBS, TBA
0.6%
Government National Mortgage Association
0.6%
Government National Mortgage Association
0.5%
Fannie Mae
0.5%
Government National Mortgage Association
0.5%
Freddie Mac
0.5%
UMBS, TBA
0.5%
Asset allocation
Bonds
92.7%
Cash
7.3%
Risk profile
Last 12 months · Sharpe & Sortino need 3+ yearsVolatility (1Y)
4.5%Low
Year-on-year price swings
Max drawdown
-17.6%Moderate
Worst peak-to-trough loss
Sharpe (3Y)
0.13Below average
Sortino (3Y)
0.18Moderate downside risk
Bond profile
Duration
3.7 years
Avg maturity
9.1 years
Credit ratings
AA
100.0%
Listing
- Exchange
- NASDAQ Global Select Market
Full fund details
- Objective
- Tracks the investment results of the Bloomberg U.S. MBS Index.
- Strategy
- Invests primarily in investment-grade mortgage-backed pass-through securities issued and/or guaranteed by U.S. government agencies, using a representative sampling indexing strategy to track the Bloomberg U.S. MBS Index. The Fund is market capitalization-weighted and aims to achieve lower costs and better after-tax performance.
- Inception date
- March 13, 2007
- Fund family
- iShares
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Data updated on 2026-09-18