iShares MBS ETF (MBB)

MBB Holdings List

As of Sep 10, 2025

Filter results

No.	Symbol	Name	% Weight	Shares
1	BISXX	BlackRock Cash Funds Instl SL Agency	4.73%	1,956,298,065
2	FR.SD8146	Federal Home Loan Mortgage Corp. 2%	1.01%	513,324,453
3	G2SF.6 9.11	Government National Mortgage Association 6%	0.94%	381,750,000
4	G2SF.5.5 9.11	Government National Mortgage Association 5.5%	0.61%	249,433,000
5	G2.MA7648	Government National Mortgage Association 2%	0.54%	270,502,520
6	G2.MA7766	Government National Mortgage Association 2%	0.53%	265,797,229
7	FN.MA4492	Federal National Mortgage Association 2%	0.51%	262,022,142
8	FR.SD8140	Federal Home Loan Mortgage Corp. 2%	0.49%	251,628,021
9	G2.MA7472	Government National Mortgage Association 2.5%	0.46%	218,401,040
10	FN.MA4465	Federal National Mortgage Association 2%	0.44%	222,329,455
11	FN.FS4654	Federal National Mortgage Association 2%	0.43%	219,477,555
12	G2SF.6.5 9.11	Government National Mortgage Association 6.5%	0.41%	163,868,493
13	FNCL.6.5 10.11	Federal National Mortgage Association 6.5%	0.40%	158,225,000
14	G2.MB0025	Government National Mortgage Association 5%	0.39%	162,316,622
15	G2.MA7935	Government National Mortgage Association 2%	0.36%	181,264,934
16	FN.CB1919	Federal National Mortgage Association 3%	0.36%	169,834,358
17	G2.MA7367	Government National Mortgage Association 2.5%	0.35%	169,857,166
18	G2.MA9171	Government National Mortgage Association 5.5%	0.35%	141,717,722
19	G2SF.5 9.11	Government National Mortgage Association 5%	0.35%	143,587,000
20	G2.MA7987	Government National Mortgage Association 2.5%	0.34%	161,674,565
21	FR.SD8199	Federal Home Loan Mortgage Corp. 2%	0.34%	172,059,518
22	FN.FS9130	Federal National Mortgage Association 2%	0.32%	163,745,113
23	FN.MA4281	Federal National Mortgage Association 2%	0.32%	163,738,705
24	FNCI.2 9.12	Federal National Mortgage Association 2%	0.31%	140,295,791
25	FN.MA4437	Federal National Mortgage Association 2%	0.31%	157,238,141

Showing 25 of 11371 holdings

Subscribe to see the full list