iShares MBS ETF

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About MBB

MBB tracks a market-weighted index of investment-grade mortgage pass-through securities. The index includes fixed and floating rate securities issued by GNMA, FNMA and FHLMC.

Index-Tracked

BBgBarc US MBS TR USD

Index-TrackedBBgBarc US MBS TR USD

What's in this fund

Sectors

As of April 12, 2024

Securitized Bonds96.34%

Cash and Equivalents3.61%

Corporate Bonds0.05%

Top 10 Holdings (12.66% of total assets)

As of April 12, 2024

NameSymbol% Assets

BlackRock Cash Funds Instl SL Agency—3.37%

Fnma Pass-Thru I 2%—1.51%

Federal Home Loan Mortgage Corporation 2%—1.23%

Fnma Pass-Thru I 2%—1.04%

Fnma Pass-Thru I 2%—1.00%

Fnma Pass-Thru I 2%—0.98%

Fnma Pass-Thru I 2.5%—0.97%

GNMA2 30YR 2021 PRODUCTION—0.88%

Fnma Pass-Thru I 2.5%—0.85%

GNMA2 30YR 2021 PRODUCTION—0.83%

MBB Key Statistics

AUM

28.96B

AUM28.96B

Price-Earnings ratio

—

Price-Earnings ratio—

30-Day yield

3.65

30-Day yield3.65

Average volume

3.63M

Average volume3.63M

High today

—

High today—

Low today

—

Low today—

Open price

$89.24

Open price$89.24

Volume

0.00

Volume0.00

52 Week high

$95.70

52 Week high$95.70

52 Week low

$85.28

52 Week low$85.28

Expense ratio

0.05

Expense ratio0.05

View Prospectus and Reports