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Name

As of 12/20/2024

Price

Aum/Mkt Cap

YIELD

Annualized forward dividend yield. Multiplies the most recent dividend payout amount by its frequency and divides by the previous close price.

Exp Ratio

Expense ratio is the fund’s total annual operating expenses, including management fees, distribution fees, and other expenses, expressed as a percentage of average net assets.

Watchlist

iShares MBS ETF

MBB | ETF

$91.66

$35.7 B

3.85%

$3.53

0.05%

Vitals

YTD Return

1.3%

1 yr return

1.7%

3 Yr Avg Return

-2.1%

5 Yr Avg Return

-0.7%

Net Assets

$35.7 B

Holdings in Top 10

11.1%

52 WEEK LOW AND HIGH

$91.3
$89.41
$96.66

Expenses

OPERATING FEES

Expense Ratio 0.05%

SALES FEES

Front Load N/A

Deferred Load N/A

TRADING FEES

Turnover 349.00%

Redemption Fee N/A

Min Investment

Standard (Taxable)

N/A

IRA

N/A

Fund Classification

Fund Type

Exchange Traded Fund

Name

As of 12/20/2024

Price

Aum/Mkt Cap

YIELD

Annualized forward dividend yield. Multiplies the most recent dividend payout amount by its frequency and divides by the previous close price.

Exp Ratio

Expense ratio is the fund’s total annual operating expenses, including management fees, distribution fees, and other expenses, expressed as a percentage of average net assets.

Watchlist

iShares MBS ETF

MBB | ETF

$91.66

$35.7 B

3.85%

$3.53

0.05%

MBB - Profile

Distributions

  • YTD Total Return 1.3%
  • 3 Yr Annualized Total Return -2.1%
  • 5 Yr Annualized Total Return -0.7%
  • Capital Gain Distribution Frequency Annually
  • Net Income Ratio 1.12%
DIVIDENDS
  • Dividend Yield 3.9%
  • Dividend Distribution Frequency Monthly

Fund Details

  • Legal Name
    iShares MBS ETF
  • Fund Family Name
    BlackRock-advised Funds
  • Inception Date
    Mar 13, 2007
  • Shares Outstanding
    215900000
  • Share Class
    N/A
  • Currency
    USD
  • Domiciled Country
    US
  • Manager
    James Mauro

Fund Description

The Fund seeks to track the investment results of the Bloomberg U.S. MBS Index (the “Underlying Index”), which measures the performance of investment-grade (as determined by Bloomberg Index Services Limited (the “Index Provider” or “Bloomberg”)) mortgage-backed pass-through securities (“MBS”) issued and/or guaranteed by U.S. government agencies or sponsored entities. The Underlying Index includes fixed-rate MBS issued by the Government National Mortgage Association (“GNMA” or “Ginnie Mae”), Federal National Mortgage Association (“Fannie Mae”)
and Federal Home Loan Mortgage Corporation (“Freddie Mac”) that have 30-, 20-, or 15-year maturities. All securities in the Underlying Index must have a remaining weighted average maturity of at least one year. In addition, the securities in the Underlying Index must be denominated in U.S. dollars and must be non-convertible. The Underlying Index is market capitalization-weighted and the securities in the Underlying Index are updated on the last business day of each month.
As of February 29, 2024, approximately 100% of the bonds represented in the Underlying Index were U.S. agency MBS. Most transactions in MBS occur through standardized contracts for future delivery in which the exact mortgage pools to be delivered are not specified until a few days prior to settlement (to-be-announced (“TBA”) transactions). The Fund may enter into such contracts for fixed-rate pass-through securities on a regular basis. The Fund, pending settlement of such contracts, will invest its assets in liquid, short-term instruments, including shares of money market funds advised by BFA or its affiliates. The Fund will assume its pro rata share of the fees and expenses of any money market fund that it may invest in, in addition to
the Fund's own fees and expenses. The Fund may also acquire interests in mortgage pools through means other than such standardized contracts for future delivery.
BFA uses an indexing approach to try to achieve the Fund’s investment objective. Unlike many investment companies, the Fund does not try to “beat” the index it tracks and does not seek temporary defensive positions when markets decline or appear overvalued.
Indexing may eliminate the chance that the Fund will substantially outperform the Underlying Index but also may reduce some of the risks of active management, such as poor security selection. Indexing seeks to achieve lower costs and better after-tax performance by aiming to keep portfolio turnover low in comparison to actively managed investment companies.
BFA uses a representative sampling indexing strategy to manage the Fund. “Representative sampling” is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to that of an applicable underlying index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market value and industry weightings), fundamental characteristics (such as return variability, duration (i.e., a security's price sensitivity to a change in interest rates), maturity or credit ratings and yield) and liquidity measures similar to those of an applicable underlying index. The Fund may or may not hold all of the securities in the Underlying Index.
The Fund will invest at least 80% of its assets in the component securities of
the Underlying Index and TBAs that have economic characteristics that are substantially identical to the economic characteristics of the component securities of the Underlying Index, and the Fund will invest at least 90% of its assets in fixed income securities of the types included in the Underlying Index that BFA believes will help the Fund track the Underlying Index. The Fund will invest no more than 10% of its assets in futures, options and swaps contracts that BFA believes will help the Fund track the Underlying Index as well as in fixed income securities other than the types included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index. Cash and cash equivalent investments associated with a TBA position will be treated as part of that position for purposes of calculating the percentage of investments in the component securities of the Underlying Index. Cash and cash equivalent investments associated with a derivative position will be treated as part of that position for the purposes of calculating the percentage of investments included in the Underlying Index. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund.
The Underlying Index is sponsored by Bloomberg, which is independent of the Fund and BFA. The Index Provider determines the composition and relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.
Industry Concentration Policy. The Fund will concentrate its investments i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same
extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities), repurchase agreements collateralized by U.S. government securities, and securities of state or municipal governments and their political subdivisions are not considered to be issued by members of any industry.
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MBB - Performance

Return Ranking - Trailing

Period MBB Return Category Return Low Category Return High Rank in Category (%)
YTD 1.3% -4.1% 25.9% 19.64%
1 Yr 1.7% -4.4% 26.7% 18.30%
3 Yr -2.1%* -8.1% 12.1% 25.11%
5 Yr -0.7%* -6.0% 3.4% 44.34%
10 Yr 0.8%* -2.4% 3.7% 27.71%

* Annualized

Return Ranking - Calendar

Period MBB Return Category Return Low Category Return High Rank in Category (%)
2023 1.4% -1.0% 22.1% 33.04%
2022 -13.7% -20.4% -5.8% 61.43%
2021 -2.5% -7.1% 16.6% 27.52%
2020 1.9% -1.3% 8.8% 70.75%
2019 3.3% 0.3% 7.1% 55.50%

Total Return Ranking - Trailing

Period MBB Return Category Return Low Category Return High Rank in Category (%)
YTD 1.3% -4.1% 25.9% 19.64%
1 Yr 1.7% -4.4% 26.7% 18.30%
3 Yr -2.1%* -8.1% 12.1% 25.11%
5 Yr -0.7%* -6.0% 3.4% 44.34%
10 Yr 0.8%* -2.4% 3.7% 27.71%

* Annualized

Total Return Ranking - Calendar

Period MBB Return Category Return Low Category Return High Rank in Category (%)
2023 5.0% -0.5% 28.8% 20.09%
2022 -11.7% -18.5% -3.3% 47.53%
2021 -1.4% -4.5% 25.3% 44.50%
2020 4.1% -1.3% 13.0% 79.72%
2019 6.2% 1.8% 11.3% 33.49%

MBB - Holdings

Concentration Analysis

MBB Category Low Category High MBB % Rank
Net Assets 35.7 B 8.74 M 134 B 2.68%
Number of Holdings 10973 13 12380 1.34%
Net Assets in Top 10 3.7 B 5.7 M 55.6 B 12.50%
Weighting of Top 10 11.05% 6.2% 99.3% 95.98%

Top 10 Holdings

  1. BlackRock Cash Funds: Treasury, SL Agency Shares 4.94%
  2. Freddie Mac Pool 0.97%
  3. Ginnie Mae II Pool 0.75%
  4. Ginnie Mae II Pool 0.73%
  5. Freddie Mac Pool 0.66%
  6. Fannie Mae Pool 0.64%
  7. Ginnie Mae II Pool 0.63%
  8. Uniform Mortgage-Backed Security, TBA 0.59%
  9. Fannie Mae Pool 0.59%
  10. Ginnie Mae II Pool 0.54%

Asset Allocation

Weighting Return Low Return High MBB % Rank
Bonds 		98.54% 0.03% 161.75% 68.75%
Cash 		4.94% -20.28% 28.09% 27.68%
Stocks 		0.00% 0.00% 95.39% 7.59%
Preferred Stocks 		0.00% 0.00% 0.11% 7.14%
Other 		0.00% -20.46% 42.16% 64.29%
Convertible Bonds 		0.00% 0.00% 3.29% 8.93%

Bond Sector Breakdown

Weighting Return Low Return High MBB % Rank
Securitized 		83.15% 0.00% 99.79% 24.11%
Cash & Equivalents 		4.94% 0.00% 28.09% 27.68%
Derivative 		0.00% -12.53% 3.25% 32.14%
Corporate 		0.00% 0.00% 9.48% 37.05%
Municipal 		0.00% 0.00% 5.24% 27.23%
Government 		0.00% 0.00% 100.00% 92.41%

Bond Geographic Breakdown

Weighting Return Low Return High MBB % Rank
US 		98.54% 0.03% 161.75% 68.75%
Non US 		0.00% 0.00% 2.20% 7.14%

MBB - Expenses

Operational Fees

MBB Fees (% of AUM) Category Return Low Category Return High Rank in Category (%)
Expense Ratio 0.05% 0.03% 2.85% 95.96%
Management Fee 0.04% 0.00% 0.85% 3.57%
12b-1 Fee N/A 0.00% 1.00% N/A
Administrative Fee N/A 0.01% 0.45% N/A

Sales Fees

MBB Fees (% of AUM) Category Return Low Category Return High Rank in Category (%)
Front Load N/A 2.00% 4.50% N/A
Deferred Load N/A 1.00% 4.50% N/A

Trading Fees

MBB Fees (% of AUM) Category Return Low Category Return High Rank in Category (%)
Max Redemption Fee N/A 1.00% 1.00% N/A

Related Fees

Turnover provides investors a proxy for the trading fees incurred by mutual fund managers who frequently adjust position allocations. Higher turnover means higher trading fees.

MBB Fees (% of AUM) Category Return Low Category Return High Rank in Category (%)
Turnover 349.00% 3.35% 948.00% 76.43%

MBB - Distributions

Dividend Yield Analysis

MBB Category Low Category High MBB % Rank
Dividend Yield 3.85% 0.00% 4.94% 35.27%

Dividend Distribution Analysis

MBB Category Low Category High Category Mod
Dividend Distribution Frequency Monthly Quarterly Monthly Monthly

Net Income Ratio Analysis

MBB Category Low Category High MBB % Rank
Net Income Ratio 1.12% -0.80% 2.96% 21.52%

Capital Gain Distribution Analysis

MBB Category Low Category High Capital Mode
Capital Gain Distribution Frequency Annually Annually Annually Annually

Distributions History

View More +

MBB - Fund Manager Analysis

Managers

James Mauro

Start Date

Tenure

Tenure Rank

Jul 01, 2011

10.92

10.9%

Head of San Francisco Fixed Income Core PM at BlackRock, Inc. since 2020; Managing Director of BlackRock, Inc. since 2015; Director of BlackRock, Inc. from 2010 to 2014; Vice President of State Street Global Advisors from 2001 to 2010. James Mauro has been employed by BlackRock Fund Advisors and BlackRock Institutional Trust Company, N.A. (“BTC”) as a portfolio manager since 2011. Prior to joining BTC, Mr. Mauro was a Vice President at State Street Global Advisors. His primary responsibilities include management of all government, inflation linked and derivative strategies. Other responsibilities include hedging and managing risk across all asset classes through futures and option overlays. James joined State Street Corporation in 1993. Previously, he worked as a portfolio manager on the passive team where he co-managed several Bond Index portfolios.

Karen Uyehara

Start Date

Tenure

Tenure Rank

Jun 29, 2021

0.92

0.9%

Ms. Uyehara is a Director of BlackRock, which she joined in 2010. Ms. Uyehara is a portfolio manager and member of BlackRock’s Model-Based Fixed Income Portfolio Management Group. Prior to joining BlackRock, Ms. Uyehara was a portfolio manager at Western Asset Management Company from2002 to 2010.

Tenure Analysis

Category Low Category High Category Average Category Mode
0.11 31.64 8.43 7.35

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