Fixed Income

MBB

iShares MBS ETF

  • NAV as of Mar 27, 2025 $93.05
    52 WK: 89.49 - 96.78
  • 1 Day NAV Change as of Mar 27, 2025 -0.10 (-0.10%)
  • NAV Total Return as of Mar 26, 2025 YTD: 2.33%
  • Morningstar Rating
  • Fees as stated in the prospectus Expense Ratio: 0.05%
    Net Expense Ratio: 0.04%

Overview

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Performance

Performance

Growth of Hypothetical $10,000

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Chart
Line chart with 4541 data points.
The chart has 1 X axis displaying Time. Range: 2007-03-13 00:00:00 to 2025-03-27 00:00:00.
The chart has 1 Y axis displaying values. Range: -50 to 100.
YTD6M1Y3Y5Y10YAll
End of interactive chart.
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

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Premium/Discount

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  YTD 1m 3m 6m 1y 3y 5y 10y Incept.
Total Return (%) 1.31 -1.68 -3.15 2.22 1.31 -6.25 -3.72 8.32 52.30
Market Price (%) 1.31 -1.76 -3.05 2.19 1.31 -6.10 -3.71 8.27 52.28
Benchmark (%) 1.20 -1.65 -3.16 2.20 1.20 -6.25 -3.64 9.46 58.50
After Tax Pre-Liq. (%) -0.28 -1.94 -3.67 1.26 -0.28 -9.84 -8.51 -2.44 24.86
After Tax Post-Liq. (%) 0.77 -1.00 -1.86 1.32 0.77 -6.29 -4.83 1.70 28.02
  2020 2021 2022 2023 2024
Total Return (%) 4.03 -1.27 -11.86 4.99 1.31
Market Price (%) 4.04 -1.43 -11.74 5.01 1.31
Benchmark (%) 3.87 -1.04 -11.81 5.05 1.20
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. Performance shown reflects fee waivers and/or expense reimbursements by the investment advisor to the fund for some or all of the periods shown. Performance would have been lower without such waivers.

Key Facts

Key Facts

Net Assets of Fund
as of Mar 27, 2025
$36,549,527,690
Exchange
NASDAQ
Benchmark Index
Bloomberg U.S. MBS Index
Shares Outstanding
as of Mar 27, 2025
392,800,000
Premium/Discount
as of Mar 27, 2025
-0.03%
Closing Price
as of Mar 27, 2025
93.02
30 Day Median Bid/Ask Spread
as of Mar 27, 2025
0.01%
Fund Launch Date
Mar 13, 2007
Asset Class
Fixed Income
Bloomberg Index Ticker
LUMSTRUU
Distribution Frequency
Monthly
CUSIP
464288588
30 Day Avg. Volume
as of Mar 27, 2025
4,470,053.00
Daily Volume
as of Mar 27, 2025
1,675,555.00

NAIC Designated (Schedule D Eligible)

Portfolio Characteristics

Portfolio Characteristics

Number of Holdings
as of Mar 26, 2025
11,201
30 Day SEC Yield
as of Mar 26, 2025
4.10%
Standard Deviation (3y)
as of Feb 28, 2025
8.66%
Average Yield to Maturity
as of Mar 26, 2025
5.10%
Weighted Avg Maturity
as of Mar 26, 2025
7.27 yrs
Convexity
as of Mar 26, 2025
-0.11
Equity Beta (3y)
as of Feb 28, 2025
0.35
12m Trailing Yield
as of Mar 26, 2025
3.95%
Unsubsidized 30-Day SEC Yield
as of Mar 26, 2025
4.10%
Weighted Avg Coupon
as of Mar 26, 2025
3.37
Effective Duration
as of Mar 26, 2025
5.39 yrs
Option Adjusted Spread
as of Mar 26, 2025
42.23 bps
This information must be preceded or accompanied by a current prospectus. For standardized performance, please see the Performance section above.

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

Morningstar Rating

3 stars
Overall Morningstar Rating for iShares MBS ETF, as of Feb 28, 2025 rated against 223 Intermediate Government Funds based on risk adjusted total return.

Morningstar Medalist Rating

Morningstar Medalist Rating - SILVER
Morningstar has awarded the Fund a Silver medal. (Effective Feb 28, 2025)
Analyst-Driven % as of Feb 28, 2025
20.00
Data Coverage % as of Feb 28, 2025
82.00

Holdings

Holdings

as of Mar 26, 2025
Issuer Weight (%)
FEDERAL NATIONAL MORTGAGE ASSOCIATION 43.35
FEDERAL HOME LOAN MORTGAGE CORPORATION 30.22
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION II 21.70
Issuer Weight (%)
UNIFORM MBS 1.41
FEDERAL HOME LOAN MORTGAGE CORPORATION -GOLD 1.14
GOVERNMENT NATIONAL MORTGAGE ASSOCIATION I 1.10
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.

Detailed Holdings and Analytics
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 26, 2025

% of Market Value

as of Mar 26, 2025

% of Market Value

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 26, 2025

% of Market Value

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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Carefully consider the Funds' investment objectives, risk factors, and charges and expenses before investing. This and other information can be found in the Funds' prospectuses or, if available, the summary prospectuses, which may be obtained by visiting the iShares ETF and BlackRock Fund prospectus pages. Read the prospectus carefully before investing. Investing involves risk, including possible loss of principal.

Any links to third-party websites are provided for use at your own discretion. Each third party is solely responsible for the content presented and availability of its website. BlackRock does not control, monitor or maintain third-party websites, their content or the products/services they offer. Content may change without notice. When you leave BlackRock’s website and enter a third-party website, you will be subject to that site’s terms, policies and/or notices, including those related to privacy and security, as applicable. Please review those policies and notices on the third-party website.

Before engaging Fidelity or any broker-dealer, you should evaluate the overall fees and charges of the firm as well as the services provided. Free commission offer applies to online purchases of select iShares ETFs in a Fidelity account. The sale of ETFs is subject to an activity assessment fee (from $0.01 to $0.03 per $1,000 of principal). For iShares ETFs, Fidelity receives compensation from the ETF sponsor and/or its affiliates in connection with an exclusive long-term marketing program that includes promotion of iShares ETFs and inclusion of iShares funds in certain Fidelity Brokerage Services platforms and investment programs. Please note, this security will not be marginable for 30 days from the settlement date, at which time it will automatically become eligible for margin collateral. Additional information about the sources, amounts, and terms of compensation can be found in the ETF’s prospectus and related documents. Fidelity may add or waive commissions on ETFs without prior notice.

The Funds are distributed by BlackRock Investments, LLC (together with its affiliates, “BlackRock”).

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