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›ETF Issuers›iShares›MBB

MBB

iShares MBS ETF

Passive ETF Fixed Income

The MBB Exchange Traded Fund (ETF) is provided by iShares. It is built to track an index: Bloomberg U.S. MBS Index. The MBB ETF provides physical exposure, so by buying it you actually own parts of all the 9,371 underlying holdings. This share class generates a stream of income by distributing dividends.

$93.72

-$0.1 (-0.11%) yesterday

1:30 PM 07/10/26 Closed

1D price range

$93.64$93.89

52W price range

$92.51$96.99

YTD Perf.

+0.47%

YTD Flows

Annualized volatility

Fund AuM

€34.36B

Share class AuM

€34.36B

TTM Yield

Tracking Error

Tracking Difference

Characteristics

ISIN

US4642885887

TER

0.04%

Inception date

3/13/2007

Issuer

iShares

Benchmark

Bloomberg U.S. MBS Index

Replication method

Dividend policy

Distributing

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API

PerformanceDec 31, 2025 - Jul 10, 2026

Flows

Join for free to unlock

Sector exposures

Data as of 05/31/26

Non-Corporate

6.77%

Unavailable

73.69%

Other

19.50%

Latest MBB news

No content available for this fund

FAQ about MBB

MBB is a Passive ETF. This ETF provides exposure to US Investment Grade Government Agencies Bonds.

MBB tracks the Bloomberg U.S. MBS Total Return Index - USD, through a full replication replication method.

MBB carries a total expense ratio (TER) of 0.04%, indicating the annual cost for holding the fund.

MBB was introduced to the market on March 13, 2007. It trades on United States

iShares MBS ETF, MBB, is provided by iShares. Learn more about iShares here.

MBB oversees €34.36B in assets as of July 10, 2026.

MBB follows a distributing dividend policy, meaning it pays out income to investors. As of July 10, 2026, its 12-month trailing yield was 4.30%.

As of May 31, 2026, MBB has significant geographic allocations in USA.

As of May 31, 2026, MBB focuses largely on Other sectors and Non-Corporate.

As of May 31, 2026, MBB holds 9371 positions in its portfolio, with 16.00% of assets concentrated in its top 15 holdings.

As of May 31, 2026, MBB top three holdings include BlackRock Cash Funds - Institutional, FR SD8146, 2% 1may2051, USD (ABS) and US21H0526606.

The base currency of MBB is USD.

Top 10 holdings

Data as of 05/31/26

BlackRock Cash Funds - Institutional

6.77%

FR SD8146, 2% 1may2051, USD (ABS)

1.05%

US21H0526606

0.95%

US01F0526644

0.94%

US21H0506640

0.90%

US01F0506687

0.90%

US3618N5A332

0.55%

G2 MA7648, 2% 20oct2051, USD (ABS)

0.54%

US36179WTX64

0.53%

FN MA4492, 2% 1dec2051, USD (ABS)

0.52%

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Since our founding in 2016, we have been at the forefront of the industry, delivering accessible, comprehensive, and reliable tools to support the evolving needs of investors.

Over the past decade, Trackinsight has expanded its operations across six countries, serving thousands of professional investors. We’ve consistently innovated to provide cutting-edge solutions that meet the changing demands of the ETF market.

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