MBB ETF

MBB ETF
$89.79
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MBB holds 13.4% of its assets in its 10 largest positions as of Sep 11, 2026. MBB is iShares MBS ETF.

Showing the top 10 of 22,427 holdings · as of Sep 11, 2026
Top 10 weight
13.42%
MBB top 10 holdings, by weight
#TickerNameWeightCumulativeMkt valueSectorIndustry
1
BISXX
Blackrock Cash Funds: Institutional, Sl Agency SharesFinancials · Capital Markets
7.39%		7.4%$2.87BFinancialsCapital Markets
2—Fhlmc 30Yr Umbs Super 2% Apr 01, 2051Financials · Thrifts
0.97%		8.4%$377.08MFinancialsThrifts
Sector and industry · Pro
3—Fncl 5.5 10/26
0.89%		9.3%$344.65M
4—Fncl 5 10/26
0.74%		10.0%$289.30M
5—Ginnie Mae 5.5% 21Sep2053
0.71%		10.7%$275.95M
6DebtGinnie Mae
0.63%		11.3%$245.27M
7—Government National Mortgage Association Series 2025 5.00%, 09/01/55
0.55%		11.9%$212.60M
8Debt-
0.55%		12.4%$212.68M
9DebtGovernment National Mortgage A
0.50%		12.9%$194.93M
10—Gnma2 30Yr 2% Dec 20, 2051
0.49%		13.4%$191.57M
More holdings · Pro
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Themes in the top 10
Asset ManagementETF ProvidersInvestment TechnologyLending & CreditMarket InfrastructureGlobal BankingInterest RatesDerivatives TradingInflation ProtectionInfrastructureSupply Chain

MBB ETF Top Holdings

MBB holdings top 10 positions. The top 10 holdings account for 13.4% of the fund, led by Blackrock Cash Funds: Institutional, Sl Agency Shares at 7.4%, Fhlmc 30Yr Umbs Super 2% Apr 01, 2051 at 1.0%, Fncl 5.5 10/26 at 0.9%.

MBB portfolio concentration is well-diversified, with the top 10 representing 13.4% of total assets. The largest sector exposure is Financials at 88.3%.

MBB sectors provide a detailed breakdown. MBB overlap shows how holdings compare to other funds in your portfolio.

Compare MBB

MBB vs SPYMBB vs QQQMBB vs VOOMBB vs VTIMBB vs IVVMBB vs SCHDMBB vs VYMMBB vs VXUS
Showing 10 of 22,427 holdingsTop 10 Weight: 13.42%
#TickerNameIndustryWeightAllocation
1BISXXBlackrock Cash Funds: Institutional, Sl Agency SharesFinancials7.39%
2FR SD8146Fhlmc 30Yr Umbs Super 2% Apr 01, 2051Financials0.97%
3FNCL 5.5 10/11Fncl 5.5 10/26Financials0.89%
4FNCL 5 10/11Fncl 5 10/26Financials0.74%
5G2SF 5.5 9/11Ginnie Mae 5.5% 21Sep2053Financials0.71%
6G2SF 6 9/11Ginnie Mae 6 09/20/2053Financials0.63%
7G2SF 5 9/11Government National Mortgage Association Series 2025 5.00%, 09/01/55Financials0.55%
8G2 MB0025G2 Mb0025 5 11/20/54 2054-11-20Financials0.55%
9G2 MA7648Government National Mortgage A 2 10/20/2051Financials0.50%
10G2 MA7766Gnma2 30Yr 2% Dec 20, 2051Financials0.49%
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Holdings Distribution

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