About BlackRock

WHO WE ARE

BlackRock’s purpose is to help more and more people experience financial well-being. As a fiduciary to investors and a leading provider of financial technology, our clients turn to us for the solutions they need when planning for their most important goals. As of December 31, 2019, the firm managed approximately $7.43 trillion in assets on behalf of investors worldwide.

Our Company and Sites

MBB

iShares MBS ETF

Fixed Income

MBB

iShares MBS ETF

How To Buy

Overview

Why MBB?

1. Exposure to broad range of U.S. mortgage-backed bonds, including those issued by government sponsored enterprises such as Ginnie Mae, Fannie Mae, and Freddie Mac

 

2. Access to the domestic mortgage-backed bond market in a single fund

 

3. Use to seek income

INVESTMENT OBJECTIVE

The iShares MBS ETF (MBB) seeks to track the investment results of an index composed of investment-grade mortgage-backed pass-through securities issued and/or guaranteed by U.S. government agencies.
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Performance

Performance

  • Returns

  1y 3y 5y 10y Incept.
Total Return (%) Total return represents changes to the NAV and accounts for distributions from the fund.

as of Dec 31, 2019

6.27 3.13 2.38 2.95 3.65
Market Price (%) Market price return represents changes to the midpoint price and accounts for distributions from the fund. The midpoint is the average of the bid-ask prices at 4:00 PM ET (when NAV is normally determined for most funds).

as of Dec 31, 2019

6.24 3.16 2.37 2.94 3.64
Benchmark (%) Index: Bloomberg Barclays US Mortgage Backed Securities Index

as of Dec 31, 2019

6.35 3.25 2.58 3.15 3.96
After Tax Pre-Liq. (%) Return after taxes on distributions. Assumes fund shares have not been sold.

as of Dec 31, 2019

5.07 2.04 1.29 1.86 2.46
After Tax Post-Liq. (%) Return after taxes on distributions and sale of fund shares.

as of Dec 31, 2019

3.70 1.91 1.33 1.82 2.35
  YTD 1m 3m 6m 1y 3y 5y 10y Incept.
Total Return (%) Total return represents changes to the NAV and accounts for distributions from the fund.

as of Dec 31, 2019

6.27 0.29 0.60 2.01 6.27 9.68 12.50 33.70 58.17
Market Price (%) Market price return represents changes to the midpoint price and accounts for distributions from the fund. The midpoint is the average of the bid-ask prices at 4:00 PM ET (when NAV is normally determined for most funds).

as of Dec 31, 2019

6.24 0.22 0.59 1.99 6.24 9.78 12.44 33.64 58.14
Benchmark (%) Index: Bloomberg Barclays US Mortgage Backed Securities Index

as of Dec 31, 2019

6.35 0.28 0.71 2.09 6.35 10.06 13.59 36.42 64.48
After Tax Pre-Liq. (%) Return after taxes on distributions. Assumes fund shares have not been sold.

as of Dec 31, 2019

5.07 0.18 0.29 1.39 5.07 6.26 6.63 20.28 36.47
After Tax Post-Liq. (%) Return after taxes on distributions and sale of fund shares.

as of Dec 31, 2019

3.70 0.17 0.36 1.19 3.70 5.85 6.84 19.74 34.61
  2015 2016 2017 2018 2019
Total Return (%) Total return represents changes to the NAV and accounts for distributions from the fund. 1.28 1.28 2.37 0.81 6.27
Market Price (%) Market price return represents changes to the midpoint price and accounts for distributions from the fund. The midpoint is the average of the bid-ask prices at 4:00 PM ET (when NAV is normally determined for most funds). 1.18 1.23 2.51 0.80 6.24
Benchmark (%) Index: Bloomberg Barclays US Mortgage Backed Securities Index 1.51 1.67 2.47 0.99 6.35
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.

Growth of Hypothetical $10,000 The growth of hypothetical $10,000 chart reflects a hypothetical $10,000 investment and assumes reinvestment of dividends and capital gains. Fund expenses, including management fees and other expenses were deducted.

Performance chart data not available for display.
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The Hypothetical Growth of $10,000 chart reflects a hypothetical $10,000 investment and assumes reinvestment of dividends and capital gains. Fund expenses, including management fees and other expenses were deducted.

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, and numbers may reflect small variances due to rounding. Standardized performance and performance data current to the most recent month end may be found in the Performance section.

Distributions

Ex-Date Total Distribution Income
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Distributions Schedule
Record Date Ex-Date Payable Date Total Distribution Current year distributions are not classified as “Income,” “Short-Term Capital Gains,” “Long-Term Capital Gains,” or “Return of Capital” until calendar year-end. Income ST Cap Gains LT Cap Gains Return of Capital

Premium/Discount

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Key Facts

Key Facts

Net Assets as of Jan 28, 2020 $22,890,589,712
Inception Date Mar 13, 2007
Exchange NASDAQ
Asset Class Fixed Income
Benchmark Index Bloomberg Barclays US Mortgage Backed Securities Index
Bloomberg Index Ticker LUMSTRUU
Shares Outstanding as of Jan 28, 2020 210,600,000
Number of Holdings The number of holdings in the fund excluding cash positions and derivatives such as futures and currency forwards. as of Jan 28, 2020 8,946
Premium/Discount The amount the Fund is trading above or below the reported NAV expressed as a percentage of the NAV. When the fund's market price is greater than the fund’s NAV, it is said to be trading at a "Premium" and the percentage is expressed as a positive number. When the fund's market price is less than the fund’s NAV, it is said to be trading at a "Discount" and the percentage is expressed as a negative number. as of Jan 28, 2020 0.00%
CUSIP 464288588
Closing Price as of Jan 28, 2020 108.69
Mid-Point Price The midpoint between the highest bid and the lowest offer on the listing exchange, as of the time that the Fund's NAV is calculated (usually 4:00 pm eastern time for most funds). as of Jan 28, 2020 108.69
Options Available Yes
20 Day Avg. Volume The average number of shares traded in a security across all U.S. exchanges over the last 20 trading days. as of Jan 28, 2020 2,453,544.65
Daily Volume The number of shares traded in a security across all U.S. exchanges on the date indicated. as of Jan 28, 2020 1,441,907.00
NAIC Designated (Schedule D Eligible)

Portfolio Characteristics

Portfolio Characteristics

Equity Beta (3y) Beta is a measure of the tendency of securities to move with the market as a whole. A beta of 1 indicates that the security&#39;s price will move with the market. A beta less than 1 indicates the security tends to be less volatile than the market, while a beta greater than 1 indicates the security is more volatile than the market.<br/><br/>Calculated vs. S&amp;P 500 as of Dec 31, 2019 -0.03
Standard Deviation (3y) Standard deviation measures how dispersed returns are around the average. A higher standard deviation indicates that returns are spread out over a larger range of values and thus, more volatile. as of Dec 31, 2019 2.21%
12m Trailing Yield The yield an investor would have received if they had held the fund over the last twelve months assuming the most recent NAV. The 12-Month yield is calculated by assuming any income distributions over the past twelve months and dividing by the sum of the most recent NAV and any capital gain distributions made over the past twelve months. as of Jan 28, 2020 2.75%
30 Day SEC Yield A standard calculation of yield introduced by the SEC in order to provide fairer comparison among funds. This yield reflects the interest earned after deducting the fund&#39;s expenses during the most recent 30-day period by the average investor in the fund. Negative 30-Day SEC Yield results when accrued expenses of the past 30 days exceed the income collected during the past 30 days. as of Jan 28, 2020 2.40%
Unsubsidized 30-Day SEC Yield Represents what a fund&#39;s 30-Day SEC Yield would have been had no fee waiver or expense reimbursement been in place over the period. as of Jan 28, 2020 2.39%
Weighted Avg Coupon The average coupon rate of the underlying bonds in the fund, weighted by each bond&#39;s face value. as of Jan 28, 2020 3.83%
Effective Duration Effective Duration measures the sensitivity of the price of a bond with or without embedded options to changes in interest rates, taking into account the likelihood of the bond being called, put and/or sunk prior to its final maturity date while incorporating after-tax impacts on the bond. The options-based duration model used by BlackRock employs certain assumptions and may differ from other fund complexes. Effective Duration is measured at the individual bond level, aggregated to the portfolio level, and adjusted for leverage, hedging transactions and non-bond holdings, including derivatives. as of Jan 28, 2020 2.24 yrs
Weighted Avg Maturity 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 Jan 28, 2020 4.61 yrs
Convexity Convexity measures the change in duration for a given change in rates. Positive convexity indicates that duration lengthens when rates fall and contracts when rates rise; negative convexity indicates that duration contracts when rates fall and increases when rates rise. as of Jan 28, 2020 -1.62
Option Adjusted Spread The weighted average incremental yield earned over similar duration US Treasuries, measured in basis points. This metric considers the likelihood that bonds will be called or prepaid before the scheduled maturity date. as of Jan 28, 2020 53
Average Yield to Maturity The discount rate that equates the present value of a bond’s cash flows with its market price (including accrued interest). The Fund Average Yield to Maturity is the weighted average of the fund’s individual bond holding yields based on Net Asset Value (‘NAV’). The measure does not include fees and expenses. For callable bonds, this yield is the yield-to-worst. as of Jan 28, 2020 2.37%
This information must be preceded or accompanied by a current prospectus. For standardized performance, please see the Performance section above.

Holdings

Holdings

as of Jan 28, 2020
Issuer Weight (%)
FEDERAL NATIONAL MORTGAGE ASSOCIATION 40.95
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION II 25.96
FEDERAL HOME LOAN MORTGAGE CORPORATION 11.16
Issuer Weight (%)
FEDERAL HOME LOAN MORTGAGE CORPORATION -GOLD 10.68
UNIFORM MBS 7.34
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION I 1.74