iShares MBS ETF (MBB) Holdings List

$94.13 0.00 (0.00%)

As of 07/2/2026 04:00 PM Eastern

What stocks does MBB hold?

The iShares MBS ETF (MBB) top stock holdings include BLACKROCK CASH CL INST SL AGENCY, FHLMC 30YR UMBS SUPER - 2.0 2051-05-01, and GNMA2 30YR TBA(REG C) - 5.5 2026-07-20. The top 25 MBB holdings ordered by weight make up 19.26% of the total fund. MBB is a fixed income fund in the u.s. government category that invests in investments, focused on agency mbs strategies within the North America region. This page includes a complete MBB stock holdings list ranked by weight, along with a full breakdown of sector, geographic, industry, and currency exposure.

Top 25 MBB Holdings

Rank	Company	Current Price	Weight	Shares Held
1	BLACKROCK CASH CL INST SL AGENCY	N/A	7.28%	2,892,677,906
2	FHLMC 30YR UMBS SUPER - 2.0 2051-05-01	N/A	1.02%	498,579,330
3	GNMA2 30YR TBA(REG C) - 5.5 2026-07-20	N/A	0.93%	364,833,000
4	UMBS 30YR TBA(REG A) - 5.5 2026-07-13	N/A	0.83%	328,952,000
5	GNMA2 30YR TBA(REG C) - 5.0 2026-07-20	N/A	0.80%	320,407,000
6	UMBS 30YR TBA(REG A) - 5.0 2026-07-13	N/A	0.67%	270,622,000
7	GNMA2 30YR - 5.0 2054-11-20	N/A	0.53%	212,958,774
8	GNMA2 30YR - 2.0 2051-10-20	N/A	0.53%	253,822,171
9	GNMA2 30YR - 2.0 2051-12-20	N/A	0.52%	249,214,131
10	FNMA 30YR UMBS - 2.0 2051-12-01	N/A	0.51%	249,590,013
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11	FHLMC 30YR UMBS SUPER - 2.0 2051-04-01	N/A	0.49%	238,969,594
12	GNMA2 30YR TBA(REG C) - 4.5 2026-07-20	N/A	0.47%	191,457,000
13	GNMA2 30YR TBA(REG C) - 6.0 2026-07-20	N/A	0.45%	173,486,000
14	GNMA2 30YR - 2.5 2051-07-20	N/A	0.44%	204,248,167
15	FNMA 30YR UMBS - 2.0 2051-11-01	N/A	0.43%	211,429,516
16	FNMA 30YR UMBS SUPER - 2.0 2051-07-01	N/A	0.42%	207,020,880
17	GNMA2 30YR - 5.5 2053-09-20	N/A	0.40%	154,249,826
18	GNMA2 30YR - 2.0 2052-03-20	N/A	0.35%	169,938,835
19	GNMA2 30YR - 2.5 2051-05-20	N/A	0.34%	158,938,358
20	FNMA 30YR UMBS SUPER - 2.0 2052-04-01	N/A	0.32%	155,815,660
21	FNMA 30YR UMBS - 2.0 2051-03-01	N/A	0.32%	155,623,975
22	UMBS 30YR TBA(REG A) - 6.0 2026-07-13	N/A	0.31%	121,550,000
23	FNMA 30YR UMBS - 2.0 2051-10-01	N/A	0.31%	149,437,293
24	GNMA2 30YR - 2.0 2052-01-20	N/A	0.30%	145,568,497
25	GNMA2 30YR - 2.5 2051-08-20	N/A	0.29%	135,760,500

MBB Geographic Exposure

MBB's largest geographic exposure is United States at 100.5%.

United States
100.0%

MBB Currency Exposure

MBB is exclusively exposed to USD.

USD
100.0%

MBB Sector Exposure

MBB's largest sector exposure is Financials at 82.3%.

Financials
82.3%

MBB Industry Exposure

MBB's largest industry exposure is Thrifts & Mortgage Finance at 81.2%, followed by Capital Markets at 1.0%.

Thrifts & Mortgage Finance
81.2%
Capital Markets
1.0%
Diversified Financial Services
0.1%

MBB Sub-Industry Exposure

MBB's largest sub-industry exposure is Thrifts & Mortgage Finance at 82.3%.

Thrifts & Mortgage Finance
82.3%

MBB Coupon Exposure

MBB's largest coupon exposure is 2-4 at 61.4%, followed by 4-6 at 32.8%.

2-4
61.4%
4-6
32.8%
6-8
11.5%

MBB Maturity Exposure

MBB's largest maturity exposure is 20-30 at 79.0%, followed by 0-1 at 6.8%.

20-30
79.0%
0-1
6.8%
10-15
6.1%
15-20
2.9%
30+
2.7%
5-10
2.0%
3-5
0.2%

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This page (NASDAQ:MBB) was last updated on 7/5/2026 by MarketBeat.com Staff.

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iShares MBS ETF (MBB) Holdings List