ETF Factsheet · Bonds

iShares MBS ETF (MBB)

MBB ETF Factsheet: fees, AUM, composition, allocation and performance, based on positions published by the issuer.

Theme BondsIssuer ISharesClass Fixed IncomeDomicile United StatesPEA no (fund domiciled outside Europe)
Symbol MBB·ISIN US4642885887·Created on 2007-03-13·Positions at 2026-11-01·Sheet of the 07/11/2026
Annual fees
0,04 %
deducted from the share value
Outstanding
35,89 $bn
in US dollars
Number of lines
10 833
published positions
Weight of the top 10
11,2 %
concentration
Performance 1 year
-3,4 %
price in USD
3 year performance
+4,2 %
i.e. +1,4 % per year
5 year performance
-14,8 %
i.e. -3,2 % per year
Volatilité 1 an
5,1 %
annualized standard deviation
Worst drop
-20,6 %
from a high, 5 years
Last share price
92,07 USD
-0,03 % during the session
Reading. Fees of 0,04 % per year represent 4 € deducted each year for 10 000 € invested, directly in the share value. A bond ETF lends to States or companies: fewer shocks than shares, a return close to current rates. The longer the duration, the more the price moves when rates change. Positions come from the issuer's publications; performance is calculated on the MBB listing closing prices, dividends not reinvested, in the listing currency.

10 first linesweight in the fund

BLACKROCK CASH CL INST SL AGENCY
5,35 %
FHLMC 30YR UMBS SUPER 2.00% 05/01/2051
1,05 %
UMBS 30YR TBA(REG A) 5.50% 11/12/2026
0,86 %
GNMA2 30YR TBA 6.00% 11/19/2026
0,70 %
GNMA2 30YR 5.00% 11/20/2054
0,59 %
GNMA2 30YR 2.00% 10/20/2051
0,54 %
GNMA2 30YR 2.00% 12/20/2051
0,53 %
FNMA 30YR UMBS 2.00% 12/01/2051
0,53 %
GNMA2 30YR 2.50% 07/20/2051
0,52 %
FHLMC 30YR UMBS SUPER 2.00% 04/01/2051
0,51 %

Sectorsaccording to the issuer

Federal National Mortgage Association
42,64 %
Federal Home Loan Mortgage Corporation
30,24 %
Government National Mortgage Association
24,01 %
Uniform MBS
2,67 %
Cash and/or Derivatives
0,44 %

Countryaccording to the issuer

United States
94,69 %
Other
5,32 %

What you need to know

Classic index fund: first compare the fees and recovery with what you already hold.

Composition: the 50 largest positions

#LineWeightValue
1BLACKROCK CASH CL INST SL AGENCY5,35 %1,92 $bn
2FHLMC 30YR UMBS SUPER 2.00% 05/01/20511,05 %378,0 M$
3UMBS 30YR TBA(REG A) 5.50% 11/12/20260,86 %308,0 M$
4GNMA2 30YR TBA 6.00% 11/19/20260,70 %250,8 M$
5GNMA2 30YR 5.00% 11/20/20540,59 %212,0 M$
6GNMA2 30YR 2.00% 10/20/20510,54 %194,5 M$
7GNMA2 30YR 2.00% 12/20/20510,53 %191,0 M$
8FNMA 30YR UMBS 2.00% 12/01/20510,53 %189,3 M$
9GNMA2 30YR 2.50% 07/20/20510,52 %185,3 M$
10FHLMC 30YR UMBS SUPER 2.00% 04/01/20510,51 %181,4 M$
11GNMA2 30YR TBA(REG C) 5.50% 11/19/20260,49 %176,3 M$
12FNMA 30YR UMBS 2.00% 11/01/20510,45 %160,6 M$
13GNMA2 30YR 5.00% 04/20/20560,43 %155,7 M$
14GNMA2 30YR 5.50% 09/20/20530,40 %144,9 M$
15GNMA2 30YR 5.50% 09/20/20550,40 %142,8 M$
16UMBS 30YR TBA(REG A) 5.00% 11/12/20260,37 %133,1 M$
17GNMA2 30YR 2.50% 05/20/20510,35 %126,9 M$
18GNMA2 30YR TBA(REG C) 4.50% 11/19/20260,33 %119,8 M$
19FNMA 30YR UMBS SUPER 2.00% 04/01/20520,33 %118,4 M$
20GNMA2 30YR 2.00% 01/20/20520,33 %117,1 M$
21GNMA2 30YR 5.00% 05/20/20560,32 %114,8 M$
22UMBS 15YR TBA(REG B) 4.00% 11/17/20260,32 %114,2 M$
23FNMA 30YR UMBS 2.00% 10/01/20510,32 %113,3 M$
24GNMA2 30YR TBA(REG C) 5.00% 11/19/20260,30 %108,6 M$
25GNMA2 30YR 2.50% 08/20/20510,30 %108,3 M$
26FNMA 30YR UMBS 2.00% 04/01/20510,30 %107,0 M$
27UMBS 30YR TBA(REG A) 6.00% 11/12/20260,29 %104,0 M$
28FNMA 30YR UMBS 2.00% 03/01/20510,29 %102,9 M$
29GNMA2 30YR 2.00% 12/20/20500,28 %100,3 M$
30FNMA 30YR UMBS 2.00% 02/01/20510,28 %100,3 M$
31FNMA 30YR UMBS 5.50% 09/01/20560,28 %99,9 M$
32GNMA2 30YR 2.50% 12/20/20510,27 %98,5 M$
33GNMA2 30YR 5.50% 08/20/20560,27 %97,6 M$
34GNMA2 30YR 6.50% 07/20/20540,26 %92,9 M$
35GNMA2 30YR 5.00% 12/20/20540,25 %90,6 M$
36FHLMC 30YR UMBS 5.00% 04/01/20560,25 %88,0 M$
37FHLMC 30YR UMBS SUPER 5.50% 05/01/20530,24 %87,0 M$
38FHLMC 30YR UMBS SUPER 2.00% 12/01/20510,24 %86,3 M$
39FNMA 30YR UMBS 5.50% 09/01/20560,23 %82,6 M$
40FNMA 30YR UMBS SUPER 3.00% 05/01/20520,23 %81,1 M$
41GNMA2 30YR 2.50% 04/20/20520,23 %80,8 M$
42GNMA2 30YR 2.50% 09/20/20510,22 %79,9 M$
43FHLMC 30YR UMBS SUPER 5.50% 09/01/20530,22 %78,2 M$
44FNMA 30YR UMBS SUPER 2.00% 02/01/20520,22 %78,1 M$
45FHLMC 30YR UMBS 2.50% 05/01/20510,22 %77,7 M$
46FHLMC 30YR UMBS 5.00% 05/01/20560,21 %74,9 M$
47FNMA 30YR UMBS 6.00% 09/01/20540,21 %74,4 M$
48FNMA 30YR UMBS SUPER 5.50% 11/01/20530,20 %73,4 M$
49UMBS 30YR TBA(REG A) 2.00% 11/12/20260,20 %72,5 M$
50FNMA 30YR UMBS SUPER 5.50% 02/01/20540,20 %71,4 M$

Information provided for educational purposes from the positions published by the issuers and closing prices. Past performance is not indicative of future performance; fees and assets under management are those declared by the source and may contain errors. Investing involves a risk of capital loss.

Frequently Asked Questions

To understand well

What are the fees of the MBB ETF?
Reported ongoing fees are 0,04 % per year. Fees of 0,04 % per year represent 4 € collected each year for every 10 000 € invested, directly in the share value.
What are the largest positions of the iShares MBS ETF?
The top ten holdings weigh 11,2 % of the fund: BLACKROCK CASH CL INST SL AGENCY (5,3 %), FHLMC 30YR UMBS SUPER 2.00% 05/01/2051 (1,1 %), UMBS 30YR TBA(REG A) 5.50% 11/12/2026 (0,9 %), GNMA2 30YR TBA 6.00% 11/19/2026 (0,7 %), GNMA2 30YR 5.00% 11/20/2054 (0,6 %).
Is the MBB ETF eligible for a PEA?
No: the fund is domiciled outside the European Economic Area (ISIN US4642885887), it cannot be held in a PEA. It remains accessible in a securities account.
What is the performance of MBB over 5 years?
-14,8 % over 5 years, i.e., -3,2 % per year, in USD and dividends not reinvested (closing price at 2026-11-06).

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