MBB ETF top 10 holdings are 11.0% of the fund as of Oct 31, 2025

MBB ETF top 10 holdings are 11.0% of the fund as of Oct 31, 2025
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MBB holds 11.0% of its assets in its 10 largest positions as of Oct 31, 2025. MBB is iShares MBS ETF.

Showing the top 10 of 11,178 holdings · as of Oct 31, 2025
Top 10 weight
11.04%
MBB top 10 holdings, by weight
#TickerNameWeightCumulativeMkt valueSectorIndustry
1
BISXX
Blackrock Cash Funds: Institutional, Sl Agency SharesFinancials · Capital Markets
5.01%		5.0%$2.09BFinancialsCapital Markets
2DebtGinnie Mae Ii Pool
1.16%		6.2%$483.21M--
Sector and industry · Pro
3—Fhlmc 30Yr Umbs Super 2% Apr 01, 2051
1.00%		7.2%$417.93M
4—G2Sf 6 11/23
0.91%		8.1%$378.74M
5DebtGovernment National Mortgage A
0.54%		8.6%$223.79M
6—Gnma2 30Yr 2% Dec 20, 2051
0.53%		9.2%$219.81M
7DebtFannie Mae Pool
0.51%		9.7%$213.41M
8DebtFreddie Mac
0.49%		10.2%$204.85M
9DebtGnma Ii P#Ma7472
0.45%		10.6%$188.22M
10—Fannie Mae Or Freddie Mac
0.44%		11.0%$183.16M
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Themes in the top 10
Asset ManagementETF ProvidersInvestment TechnologyLending & CreditMarket InfrastructureGlobal BankingInterest RatesInfrastructureDerivatives TradingHealth InsuranceInflation Protection

MBB ETF Top Holdings

MBB holdings top 10 positions. The top 10 holdings account for 11.0% of the fund, led by Blackrock Cash Funds: Institutional, Sl Agency Shares at 5.0%, Ginnie Mae Ii Pool 5.5 11/01/2052 at 1.2%, Fhlmc 30Yr Umbs Super 2% Apr 01, 2051 at 1.0%.

MBB portfolio concentration is well-diversified, with the top 10 representing 11.0% of total assets. The largest sector exposure is Financials at 71.4%.

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 11,178 holdingsTop 10 Weight: 11.04%
#TickerNameIndustryWeightAllocation
1BISXXBlackrock Cash Funds: Institutional, Sl Agency SharesFinancials5.01%
2-Ginnie Mae Ii Pool 5.5 11/01/2052Other1.16%
3FR SD8146Fhlmc 30Yr Umbs Super 2% Apr 01, 2051Financials1.00%
4-G2Sf 6 11/23Other0.91%
5G2 MA7648Government National Mortgage A 2 10/20/2051Financials0.54%
6G2 MA7766Gnma2 30Yr 2% Dec 20, 2051Financials0.53%
7FN MA4492Fannie Mae Pool 2.0% 12/01/2051Financials0.51%
8FR SD8140Freddie Mac 2 04/01/2051Financials0.49%
9G2 MA7472Gnma Ii P#Ma7472 2.5% 07/20/51Financials0.45%
10-Fannie Mae Or Freddie MacOther0.44%
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Holdings Distribution

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