Fixed Income

MBB

iShares MBS ETF

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Overview

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Performance

Performance

Growth of Hypothetical $10,000

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Distributions

Record Date Ex-Date Payable Date
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Premium/Discount

  1y 3y 5y 10y Incept.
4.99 -2.97 0.20 1.28 2.46
Market Price (%) 5.01 -2.97 0.20 1.28 2.45
Benchmark (%) 5.05 -2.86 0.25 1.38 2.71
After Tax Pre-Liq. (%) 3.51 -3.83 -0.73 0.30 1.35
After Tax Post-Liq. (%) 2.92 -2.60 -0.23 0.56 1.46
  YTD 1m 3m 6m 1y 3y 5y 10y Incept.
4.99 4.19 7.33 3.01 4.99 -8.64 1.01 13.51 50.33
Market Price (%) 5.01 4.18 7.27 3.03 5.01 -8.64 0.98 13.60 50.31
Benchmark (%) 5.05 4.31 7.48 3.12 5.05 -8.33 1.27 14.74 56.63
After Tax Pre-Liq. (%) 3.51 3.93 6.79 2.12 3.51 -11.04 -3.59 3.08 25.21
After Tax Post-Liq. (%) 2.92 2.48 4.33 1.76 2.92 -7.59 -1.12 5.77 27.60
  2019 2020 2021 2022 2023
Total Return (%) 6.27 4.03 -1.27 -11.86 4.99
Market Price (%) 6.24 4.04 -1.43 -11.74 5.01
Benchmark (%) 6.35 3.87 -1.04 -11.81 5.05
The performance quoted represents past performance and does not guarantee future results. Investment return and principal value of an investment will fluctuate so that an investor's shares, when sold or redeemed, may be worth more or less than the original cost. Current performance may be lower or higher than the performance quoted.

Key Facts

Key Facts

Net Assets of Fund as of Mar 18, 2024 $27,949,849,313
Fund Launch Date Mar 13, 2007
Exchange NASDAQ
Asset Class Fixed Income
Benchmark Index Bloomberg U.S. MBS Index
Bloomberg Index Ticker LUMSTRUU
Shares Outstanding as of Mar 18, 2024 305,400,000
Distribution Frequency Monthly
Premium/Discount as of Mar 18, 2024 0.04%
CUSIP 464288588
Closing Price as of Mar 18, 2024 91.56
30 Day Avg. Volume as of Mar 18, 2024 2,887,567.00
30 Day Median Bid/Ask Spread as of Mar 18, 2024 0.01%
Daily Volume as of Mar 18, 2024 1,307,926.00

Portfolio Characteristics

Portfolio Characteristics

Number of Holdings as of Mar 15, 2024 10,795
Equity Beta (3y) as of Feb 29, 2024 0.29
30 Day SEC Yield as of Mar 15, 2024 3.54%
12m Trailing Yield as of Mar 15, 2024 3.59%
Standard Deviation (3y) as of Feb 29, 2024 7.76%
Unsubsidized 30-Day SEC Yield as of Mar 15, 2024 3.54%
Average Yield to Maturity as of Mar 15, 2024 5.15%
Weighted Avg Coupon as of Mar 15, 2024 3.13
Weighted Avg Maturity as of Mar 15, 2024 7.85 yrs
Effective Duration as of Mar 15, 2024 5.73 yrs
Convexity as of Mar 15, 2024 0.08
Option Adjusted Spread as of Mar 15, 2024 44.71 bps
This information must be preceded or accompanied by a current prospectus. For standardized performance, please see the Performance section above.

Sustainability Characteristics

Sustainability Characteristics

To be included in MSCI ESG Fund Ratings, 65% (or 50% for bond funds and money market funds) of the fund’s gross weight must come from securities with ESG coverage by MSCI ESG Research (certain cash positions and other asset types deemed not relevant for ESG analysis by MSCI are removed prior to calculating a fund’s gross weight; the absolute values of short positions are included but treated as uncovered), the fund’s holdings date must be less than one year old, and the fund must have at least ten securities. MSCI Ratings are currently unavailable for this fund.

Business Involvement

Business Involvement

Business Involvement metrics can help investors gain a more comprehensive view of specific activities in which a fund may be exposed through its investments.


Business Involvement metrics are not indicative of a fund’s investment objective, and, unless otherwise stated in fund documentation and included within a fund’s investment objective, do not change a fund’s investment objective or constrain the fund’s investable universe. For more information regarding a fund's investment strategy, please see the fund's prospectus.


Review the MSCI methodology behind the Business Involvement metrics, using links below.

MSCI - Controversial Weapons as of Mar 15, 2024 0.00%
MSCI - UN Global Compact Violators as of Mar 15, 2024 0.00%
MSCI - Nuclear Weapons as of Mar 15, 2024 0.00%
MSCI - Thermal Coal as of Mar 15, 2024 0.00%
MSCI - Civilian Firearms as of Mar 15, 2024 0.00%
MSCI - Oil Sands as of Mar 15, 2024 0.00%
MSCI - Tobacco as of Mar 15, 2024 0.00%

Business Involvement Coverage as of Mar 15, 2024 3.01%
Percentage of Fund not covered as of Mar 15, 2024 96.99%
BlackRock business involvement exposures as shown above for Thermal Coal and Oil Sands are calculated and reported for companies that generate more than 5% of revenue from thermal coal or oil sands as defined by MSCI ESG Research. For the exposure to companies that generate any revenue from thermal coal or oil sands (at a 0% revenue threshold), as defined by MSCI ESG Research, it is as follows: Thermal Coal 0.00% and for Oil Sands 0.01%.

Business Involvement metrics are calculated by BlackRock using data from MSCI ESG Research which provides a profile of each company’s specific business involvement. BlackRock leverages this data to provide a summed up view across holdings and translates it to a fund's market value exposure to the listed Business Involvement areas above.


Business Involvement metrics are designed only to identify companies where MSCI has conducted research and identified as having involvement in the covered activity. As a result, it is possible there is additional involvement in these covered activities where MSCI does not have coverage. This information should not be used to produce comprehensive lists of companies without involvement. Business Involvement metrics are only displayed if at least 1% of the fund’s gross weight includes securities covered by MSCI ESG Research.

Fees

Fees

as of current prospectus
Management Fee 0.04%
Acquired Fund Fees and Expenses 0.01%
Other Expenses 0.00%
Expense Ratio 0.05%
Fee Waivers 0.01%
Net Expense Ratio 0.04%

The amounts shown above are as of the current prospectus, but may not include extraordinary expenses incurred by the Fund over the past fiscal year. Amounts are rounded to the nearest basis point, which in some cases may be "0.00".

Ratings

Holdings

Holdings

as of Mar 15, 2024
Issuer Weight (%)
FEDERAL NATIONAL MORTGAGE ASSOCIATION 43.87
FEDERAL HOME LOAN MORTGAGE CORPORATION 29.04
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION II 21.85
Issuer Weight (%)
UNIFORM MBS 1.95
FEDERAL HOME LOAN MORTGAGE CORPORATION -GOLD 1.82
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION I 0.41
Name Sector Asset Class Market Value Weight (%) Notional Value Par Value CUSIP ISIN SEDOL Location Exchange Currency Duration YTM (%) FX Rate Maturity Coupon (%) Mod. Duration Yield to Call (%) Yield to Worst (%) Real Duration Real YTM (%) Market Currency Accrual Date Effective Date
Most transactions in fixed-rate mortgage pass-through securities occur through the use of "to-be-announced" or "TBA" transactions. The Fund regularly enters into TBA agreements. The Fund invests cash pending settlement of any TBA transactions in money market instruments, repurchase agreements or other high-quality, liquid short-term instruments, including money market funds advised by BFA, which are not included in the holdings shown.

Holdings are subject to change.



The values shown for “market value,” “weight,” and “notional value” (the “calculated values”) are based off of a price provided by a third-party pricing vendor for the portfolio holding and do not reflect the impact of systematic fair valuation (“the vendor price”). The vendor price is not necessarily the price at which the Fund values the portfolio holding for the purposes of determining its net asset value (the “valuation price”). Holdings data shown reflects the investment book of record, which may differ from the accounting book of record used for the purposes of determining the Net Assets of the Fund. Additionally, where applicable, foreign currency exchange rates with respect to the portfolio holdings denominated in non-U.S. currencies for the valuation price will be generally determined as of the close of business on the New York Stock Exchange, whereas for the vendor price will be generally determined as of 4 p.m. London. The calculated values may have been different if the valuation price were to have been used to calculate such values. The vendor price is as of the most recent date for which a price is available and may not necessarily be as of the date shown above.

Please see the “Determination of Net Asset Value” section of each Fund’s prospectus for additional information on the Fund’s valuation policies and procedures.

Exposure Breakdowns

Exposure Breakdowns

as of Mar 15, 2024

% of Market Value

Type Fund
as of Mar 15, 2024

% of Market Value

Type Fund
The maturity breakdown above is based on Weighted Average Life (WAL). WAL is the average length of time to the repayment of principal for the securities in the fund. This metric considers the likelihood that bonds will be called or prepaid before the scheduled maturity date.

as of Mar 15, 2024

% of Market Value

Type Fund
Credit quality ratings on underlying securities of the fund are received from S&P, Moody’s and Fitch and converted to the equivalent S&P major rating category. This breakdown is provided by BlackRock and takes the median rating of the three agencies when all three agencies rate a security, the lower of the two ratings if only two agencies rate a security, and one rating if that is all that is provided. Unrated securities do not necessarily indicate low quality. Below investment-grade is represented by a rating of BB and below. Ratings and portfolio credit quality may change over time.
Allocations are subject to change.

Literature

Literature

 

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