MBBAiShares Mortgage-Backed Securities Active ETF
Seeks to maximize total return, consistent with income generation and prudent investment management.
By BlackRock · Launched 1998
Annual Cost
0.25%
#1,230 of 5,562 · low cost
Fund Size
$125M
#2,725 of 5,562 · mid-size
Return (1Y)Goal
N/A
Track Record
28 years
#46 of 5,562 · established
Performance
Total-return NAV · USDGrowth of $10,000
$10,117+1.2%
Total-return NAV, USD. Net of fund fees, before tax.
Classification
How Beacon categorizes this fundWhat it actually holds
By weightConcentration
Top 1 holdings = 18.0% of fund✓ well diversified
BlackRock Liquidity T-Fund InstlTSTXX
18.0%
Asset allocation
Bonds
134.5%
Other
5.0%
Risk profile
Last 12 months · Sharpe & Sortino need 3+ yearsVolatility (1Y)
N/A
Max drawdown
-2.8%Mild
Worst peak-to-trough loss
Sharpe (3Y)
Unavailable
Needs 3+ years of history
Sortino (3Y)
Not yet
Needs 3+ years of history
Bond profile
Duration
4.2 years
Avg maturity
9.1 years
Credit ratings
AAA
9.7%
AA
90.3%
Where to buy
Listing
- Exchange
- Cboe BZX
Full fund details
- Objective
- Seeks to maximize total return, consistent with income generation and prudent investment management.
- Strategy
- Invests primarily in mortgage-backed securities (MBS) and derivatives providing exposure to MBS or associated market risk factors. Includes securities from GNMA, Fannie Mae, Freddie Mac, and may participate in TBA transactions.
- Inception date
- May 18, 1998
- Fund family
- BlackRock
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Data updated on 2026-06-19