-

MBB

iShares MBS ETF

Overview

Loading

Performance

Performance

Growth of Hypothetical $10,000

View full chart

Distributions

Record Date Ex-Date Payable Date
View full table

Premium/Discount

  1y 3y 5y 10y Incept.
6.50 2.29 -0.63 1.19 2.55
Market Price (%) 6.52 2.30 -0.62 1.21 2.56
Benchmark (%) 6.52 2.32 -0.60 1.30 2.78
After Tax Pre-Liq. (%) 4.75 0.83 -1.69 0.09 1.41
After Tax Post-Liq. (%) 3.82 1.11 -0.93 0.43 1.51
  YTD 1m 3m 6m 1y 3y 5y 10y Incept.
4.19 1.77 1.12 4.19 6.50 7.01 -3.09 12.58 58.68
Market Price (%) 4.24 1.70 1.18 4.24 6.52 7.06 -3.06 12.77 58.73
Benchmark (%) 4.23 1.78 1.14 4.23 6.52 7.12 -2.96 13.74 65.21
After Tax Pre-Liq. (%) 3.44 1.62 0.69 3.44 4.75 2.50 -8.19 0.94 29.16
After Tax Post-Liq. (%) 2.47 1.05 0.66 2.47 3.82 3.37 -4.56 4.43 31.61
  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 Jul 17, 2025
$38,816,561,778
Exchange
NASDAQ
Benchmark Index
Bloomberg U.S. MBS Index
Shares Outstanding
as of Jul 17, 2025
419,100,000
Premium/Discount
as of Jul 16, 2025
-0.03
Closing Price
as of Jul 17, 2025
92.67
30 Day Median Bid/Ask Spread
as of Jul 17, 2025
0.01%
Fund Inception
Mar 13, 2007
Asset Class
-
Bloomberg Index Ticker
LUMSTRUU
Distribution Frequency
Monthly
CUSIP
464288588
30 Day Avg. Volume
as of Jul 17, 2025
2,730,935.00
Daily Volume
as of Jul 17, 2025
2,985,156.00

Portfolio Characteristics

Portfolio Characteristics

Number of Holdings
as of Jul 16, 2025
11,314
30 Day SEC Yield
as of Jul 16, 2025
4.26%
Standard Deviation (3y)
as of Jun 30, 2025
8.26%
Equity Beta (3y)
as of Jun 30, 2025
0.35
12m Trailing Yield
as of Jul 16, 2025
4.13%
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 0.00%
Other Expenses 0.00%
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

Ratings

Morningstar Rating

3 stars
Overall Morningstar Rating for iShares MBS ETF, as of Jun 30, 2025 rated against 216 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 May 31, 2025)
Analyst-Driven % as of May 31, 2025
20.00
Data Coverage % as of May 31, 2025
82.00

Holdings

Holdings

Ticker Name Sector Asset Class Market Value Weight (%) Notional Value Quantity CUSIP ISIN SEDOL Price Location Exchange Currency FX Rate Accrual 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. Notional value represents the portfolio's exposures based on the economic value of investments and options are delta-adjusted. 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 Jul 16, 2025

% of Market Value

Type Fund
Allocations are subject to change.

READY TO INVEST?

READY TO INVEST?

There are many ways to access iShares ETFs. Learn how you can add them to your portfolio.

This fund does not seek to follow a sustainable, impact or ESG investment strategy. For more information regarding the fund's investment strategy, please see the fund's prospectus or, as applicable, shareholder report.

Literature

Literature