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iShares MBS ETF ETF AnalysisComprehensive ETF analysis for iShares MBS ETF (MBB) including NAV, expense ratio, sector breakdown, and holdings data.ETF AnalysisMBB
MBB
iShares MBS ETF
MBB
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iShares MBS ETF Logo

iShares MBS ETF

ETF
🇺🇸MBB•NASDAQ•Fixed Income

Your view on MBB

iShares MBS ETF Logo

iShares MBS ETF

ETFIShares
🇺🇸MBB•NASDAQ•Fixed Income
AUM (USD)$39.48B
Expense Ratio0.04%
Holdings11,216

Sentiment

AUM (USD)

$39.48B

Expense Ratio

0.04%

Holdings

11,216

Sentiment

MBB
iShares MBS ETF
MBB

Overview for iShares MBS ETF

Fund Type
ETF
Fund Issuer
IShares
Asset Class
Fixed Income
Sector
Financial Services
Industry
Asset Management - Bonds
Inception Date
March 12, 2007
Domicile
US
Website
ishares.com/us/products/239465/ishares-mbs-etf
Fund Type
ETF
Fund Issuer
IShares
Asset Class
Fixed Income
Sector
Financial Services
Industry
Asset Management - Bonds
Inception Date
March 12, 2007
Domicile
US
Website
ishares.com/us/products/239465/ishares-mbs-etf
Fund Type
ETF
Fund Issuer
IShares
Asset Class
Fixed Income
Sector
Financial Services
Industry
Asset Management - Bonds
Inception Date
March 12, 2007
Domicile
US
Website
ishares.com/us/products/239465/ishares-mbs-etf

About this fund

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.

MBB Stock Price

Key Facts

Fixed Income

Expense Ratio

0.04%

AUM

$39.48B

Fund Details

NAV$92.67 USD
Holdings11,216
Average Volume2.22M
Inception DateMarch 12, 2007
Asset ClassFixed Income
Fund IssuerIShares
DomicileUS
ISINUS4642885887
CUSIP464288588
NAV CurrencyUSD

Expense Ratio

0.04%

Assets Under Management

$39.48B

NAV

$92.67 USD

Holdings

11,216

Average Volume

2.22M

Inception Date

March 12, 2007

Asset Class

Fixed Income

Fund Issuer

IShares

Domicile

US

ISIN

US4642885887

CUSIP

464288588

NAV Currency

USD

Expense Ratio

0.04%

Assets Under Management

$39.48B

NAV

$92.67 USD

Holdings

11,216

Average Volume

2.22M

Inception Date

March 12, 2007

Asset Class

Fixed Income

Fund Issuer

IShares

Domicile

US

ISIN

US4642885887

CUSIP

464288588

NAV Currency

USD

Data last updated: Sep 8, 2026, 07:11 AM

Latest headlines and company announcements for this company. Press releases and market coverage, newest first.

News

Latest Market News

this company valued side by side against its closest peers. Peer-relative multiples and operating metrics, so the valuation is read in the context of its own sector rather than in isolation.

News

Latest Market News

What is MBB?

iShares MBS ETF (MBB) is a Fixed Income fund from iShares, listed since 2007, with $39.5B in assets under management, a 0.04% expense ratio, a NAV of $92.67 USD.

What's in MBB? Top 10 holdings

HoldingWeight
Blackrock Cash Cl Inst Sl Agency5.14%
Fhlmc 30yr Umbs Super 2.00% 05/01/20511.04%
Gnma2 30yr Tba(Reg C) 6.00% 10/20/20260.68%
Umbs 30yr Tba(Reg A) 5.50% 10/13/20260.60%
Gnma2 30yr 5.00% 11/20/20540.59%
Gnma2 30yr Tba(Reg C) 5.50% 10/20/20260.57%
Gnma2 30yr 2.00% 10/20/20510.54%
Gnma2 30yr 2.00% 12/20/20510.53%
Fnma 30yr Umbs 2.00% 12/01/20510.52%
Gnma2 30yr 2.50% 07/20/20510.51%

MBB sector breakdown

  • Cash & Others 100.00%

Comparable funds

  • BILState Street SPDR Bloomberg 1-3 Month T-Bill ETF
  • IVEiShares SP 500 Value ETF
  • IWBiShares Russell 1000 ETF
  • IWRiShares Russell Mid-Cap ETF
  • MUBiShares National Muni Bond ETF
  • VBKVanguard Small-Cap Growth ETF
  • VGITVanguard Intermediate-Term Treasury ETF
  • VONGVanguard Russell 1000 Growth ETF

More IShares ETFs

  • XUU.TOiShares Core S&P U.S. Total Market Index ETF
  • XVLU.TOiShares MSCI USA Value Factor Index ETF
  • XVViShares ESG Select Screened S&P 500 ETF
  • XWD.TOiShares MSCI World Index ETF
  • XUT.TOiShares S&P/TSX Capped Utilities Index ETF