iShares MBS ETF

Price: $107.60
Change: $0.07 (0.0%)
Last Updated:


Brand iShares
Structure ETF
Expense Ratio 0.06%
ETF Home Page Home page
Inception Mar 13, 2007

Analyst Report

This ETF provides exposure to the mortgage backed security slice of the bond market, a corner of the finance world that has seen its share of troubles over the past few years. While MBS funds were at the heart of the subprime crisis, this product invests in liquid, stable bonds that are unlikely to default, pay out solid rates of interest, and provide valuable diversification benefits to a portfolio. Due to these benefits, most investors should consider adding some MBS holdings to their portfolio, albeit in a very small amount. MBB represents an excellent choice for investors looking to do just that as the fund is by far the most popular in the Category as well as the most liquid. In terms of diversification, the fund does a pretty solid job as it holds over 150 securities and its top ten holdings make up less than 15% of the total fund. Thanks to this, any further shocks to the housing market are unlikely to grossly impact this fund making MBB a solid choice for buy and holders and traders alike.

ETF Database Themes

Asset Class Bond
Region (General) North America
Region (Specific) U.S.
Bond Type(s) Mortgage-Backed
Bond Duration Long-Term

FactSet Classifications

  • Segment Fixed Income: U.S. - Government, Mortgage-backed Investment Grade
  • Category Government, Mortgage-backed
  • Focus Investment Grade
  • Niche Broad Maturities
  • Strategy Vanilla
  • Weighting Scheme Market Value

Trading Data

Open - Volume -
Day Lo - Day Hi -
  • Open
  • Volume
  • Day Lo
  • Day Hi
  • 52 Week Lo $106.95
  • 52 Week Hi $109.31
  • AUM $25,795.3 M
  • Shares 239.6 M

Historical Trading Data

  • 1 Month Avg. Volume 1,525,100
  • 3 Month Avg. Volume 1,322,922

Alternative ETFs in the ETF Database Mortgage Backed Securities Category

Type Symbol Expense Ratio Assets Avg. Daily Vol YTD Return
Cheapest SPMB 0.04% $4.2 B 1 M -1.45%
Largest (AUM) VMBS 0.05% $15.3 B 1 M -1.21%
Most Liquid (Volume) VMBS 0.05% $15.3 B 1 M -1.21%
Top YTD Performer DEED 0.65% $282.4 M 120,428 1.48%

Alternative ETFs in the FactSet Fixed Income: U.S. - Government, Mortgage-backed Investment Grade Segment

Type Symbol Expense Ratio Assets Avg. Daily Vol YTD Return
Cheapest SPMB 0.04% $4.2 B 1 M -1.45%
Largest (AUM) VMBS 0.05% $15.3 B 1 M -1.21%
Most Liquid (Volume) VMBS 0.05% $15.3 B 1 M -1.21%
Top YTD Performer JMBS 0.32% $848.3 M 83,994 -0.13%

Top 15 Holdings

Concentration Analysis

This section compares how balanced and deep this ETF is relative to its peers.

Holdings Comparison

MBB ETF Database Category Average FactSet Segment Average
Number of Holdings 9846 1483 2658
% of Assets in Top 10 32.56% 39.17% 40.10%
% of Assets in Top 15 36.70% 45.65% 45.90%
% of Assets in Top 50 47.56% 66.98% 65.22%

Size Comparison

MBB ETF Database Category Average FactSet Segment Average
Large (>12.9B) N/A N/A N/A
Mid (>2.7B) N/A N/A N/A
Small (>600M) N/A N/A N/A
Micro (<600M) N/A N/A N/A

MBB Valuation

This section compares the P/E ratio of this ETF to its peers.

P/E Ratio
ETF Database Category Average
P/E Ratio
FactSet Segment Average
P/E Ratio

MBB Dividend

This section compares the dividend yield of this ETF to its peers.

MBB ETF Database Category Average FactSet Segment Average
Dividend $ 0.02 $ 0.05 $ 0.05
Dividend Date 2021-10-01 N/A N/A
Annual Dividend Rate $ 1.52 $ 0.90 $ 0.88
Annual Dividend Yield 1.42% 2.00% 1.93%

MBB Price and Volume Charts

View charts featuring MBB price and volume data.

MBB Fund Flows Charts

View charts featuring ETF fund flow data.

5 Day Net Flows: 0 1 Month Net Flows: 64.49 M 3 Month Net Flows: 1.16 B 6 Month Net Flows: 274.65 M 1 Year Net Flows: 1.13 B 3 Year Net Flows: 13.66 B 5 Year Net Flows: 16.53 B 10 Year Net Flows: 22.07 B

MBB Price vs Flows AUM Influence Charts

View charts that break down the influence that fund flows and price had on overall assets.

Realtime Rating

The adjacent table gives investors an individual Realtime Rating for MBB on several different metrics, including liquidity, expenses, performance, volatility, dividend, concentration of holdings in addition to an overall rating. The "A+ Metric Rated ETF" field, available to ETF Database Pro members, shows the ETF in the Mortgage Backed Securities with the highest Metric Realtime Rating for each individual field. To view all of this data, sign up for a free 14-day trial for ETF Database Pro. To view information on how the ETF Database Realtime Ratings work, click here.

Metric Metric Realtime Rating A+ Metric Rated ETF
Liquidity A+ n/a
Expenses B n/a

A+ Overall Rated ETF:

MBB Expenses & Fees

This section compares the cost efficiency of this ETF to its peers.

Expenses Ratio Analysis

Expense Ratio
ETF Database Category Average
Expense Ratio
FactSet Segment Average
Expense Ratio

Tax Analysis

Max ST Capital Gains Rate 39.60%
Max LT Capital Gains Rate 20.00%
Tax On Distributions Ordinary income
Distributes K1 No
ESG Themes and Scores

MBB does not have an ESG score. There are no ESG themes that map to this ETF.

MBB Performance

This section shows how this ETF has performed relative to its peers.

MBB ETF Database
Category Average
Factset Segment
1 Month Return -0.19% -0.17% -0.25%
3 Month Return -0.84% -0.65% -0.76%
YTD Return -1.28% -0.88% -1.23%
1 Year Return -1.13% -0.57% -0.92%
3 Year Return 11.27% 7.42% 11.54%
5 Year Return 12.17% 6.99% 9.50%

Geographic Exposure

The following charts reflect the geographic spread of MBB's underlying holdings.

Holdings Analysis

The following charts reflect the allocation of MBB's underlying holdings.

Asset Percentage
Mortgage Backed Security 78.63%
CASH 15.49%
Other 1.64%
Open-ended Fund 0.0%
Bond Sector Percentage
Maturity Percentage
Less Than 1 Year 0.0%
1-3 Years 0.0%
3-5 Years 0.0%
5-7 Years 0.0%
7-10 Years 0.0%
10-15 Years 0.0%
15-20 Years 0.0%
20-30 Years 0.0%
30+ Years 0.0%
Asset Percentage
Mortgage Backed Security 78.63%
CASH 15.49%
Other 1.64%
Open-ended Fund 0.0%

MBB Technicals

Volatility Analysis

This section shows how the volatility of this ETF compares to the peer group ETF Database Category.

5 Day Volatility
6 of 13

20 Day Volatility
7 of 13

50 Day Volatility
9 of 13

200 Day Volatility
9 of 13

8 of 13

Standard Deviation
2 of 13


  • 20 Day MA $107.62
  • 60 Day MA $107.96
  • MACD 15 Period 0.09
  • MACD 100 Period -0.53
  • Williams % Range 10 Day 19.73
  • Williams % Range 20 Day 47.15
  • RSI 10 Day 52
  • RSI 20 Day 48
  • RSI 30 Day 47
  • Ultimate Oscillator 52

Bollinger Bands

  • Lower Bollinger (10 Day) $107.03
  • Upper Bollinger (10 Day) $107.76
  • Lower Bollinger (20 Day) $107.03
  • Upper Bollinger (20 Day) $108.21
  • Lower Bollinger (30 Day) $107.16
  • Upper Bollinger (30 Day) $108.17

Support & Resistance

  • Support Level 1 $107.44
  • Support Level 2 $107.27
  • Resistance Level 1 $107.68
  • Resistance Level 2 $107.76


  • Stochastic Oscillator %D (1 Day) 71.47
  • Stochastic Oscillator %D (5 Day) 57.79
  • Stochastic Oscillator %K (1 Day) 53.41
  • Stochastic Oscillator %K (5 Day) 40.35

Financial Advisor Report

ETF Database's Financial Advisor Reports are designed as an easy handout for clients to explain the key information on a fund. Includes new analyst insights and classification data.

Fact Sheet

Fact sheets are issued by the ETF provider and framed by ETF Database. Information contained within the fact sheet is not guaranteed to be timely or accurate.

Data Lineage

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ETF Database analysts have a combined 50 years in the ETF and Financial markets, covering every asset class and investment style. The team monitors new filings, new launches and new issuers to make sure we place each new ETF in the appropriate context so Financial Advisors can construct high quality portfolios.


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