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iShares MBS ETF

Open-end / ETF
Registrant
iShares Trust
Class ticker
MBB
Net Assets
$38,738,470,076
Holdings
11,146
Latest Report
May 31, 2026

Net Assets Over Time

Holdings · 11,146

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Showing 1–50 of 11,146 holdings by value · page 1 of 223
Holding Balance Value % of Fund Open
BLACKROCK CASH FUNDS
2,622,693,665 $2,623,480,473 6.77%
Freddie Mac
502,072,744 $405,590,680 1.05%
Government National Mortgage Association
364,833,000 $367,083,031 0.95%
UMBS, TBA
320,777,000 $322,192,743 0.83%
Government National Mortgage Association
263,507,000 $260,191,705 0.67%
UMBS, TBA
253,322,000 $249,203,172 0.64%
Government National Mortgage Association
215,006,806 $212,989,182 0.55%
Government National Mortgage Association
255,623,283 $209,879,147 0.54%
Government National Mortgage Association
251,280,308 $206,313,352 0.53%
Fannie Mae
251,122,674 $202,251,723 0.52%
Freddie Mac
240,632,683 $194,474,863 0.50%
Government National Mortgage Association
173,486,000 $176,749,242 0.46%
Government National Mortgage Association
205,920,960 $176,233,001 0.45%
Fannie Mae
212,857,991 $171,507,993 0.44%
Fannie Mae
208,760,764 $169,225,014 0.44%
Government National Mortgage Association
156,730,931 $158,905,016 0.41%
Government National Mortgage Association
171,391,873 $140,737,168 0.36%
Government National Mortgage Association
160,181,295 $137,199,152 0.35%
UMBS, TBA
127,775,000 $130,467,241 0.34%
Fannie Mae
156,816,009 $126,681,069 0.33%
Fannie Mae
156,611,066 $126,624,797 0.33%
Fannie Mae
150,426,867 $121,257,285 0.31%
Government National Mortgage Association
146,609,454 $120,373,492 0.31%
Government National Mortgage Association
136,862,847 $117,131,109 0.30%
Fannie Mae
141,829,163 $114,623,694 0.30%
Government National Mortgage Association
105,713,658 $110,364,944 0.28%
Government National Mortgage Association
127,791,324 $109,371,292 0.28%
Fannie Mae
135,018,550 $109,250,547 0.28%
Government National Mortgage Association
131,698,767 $108,273,580 0.28%
Government National Mortgage Association
124,452,134 $106,509,668 0.27%
UMBS, TBA
108,295,791 $99,435,329 0.26%
Freddie Mac
93,934,099 $94,736,212 0.24%
Freddie Mac
114,439,446 $92,168,400 0.24%
Fannie Mae
99,290,304 $88,105,141 0.23%
Government National Mortgage Association
91,457,000 $87,968,337 0.23%
Government National Mortgage Association
102,577,475 $87,791,805 0.23%
Government National Mortgage Association
101,213,841 $86,621,678 0.22%
Freddie Mac
106,645,610 $86,226,210 0.22%
Freddie Mac
83,507,851 $84,233,636 0.22%
Fannie Mae
103,550,781 $83,398,777 0.22%
Freddie Mac
98,101,558 $83,239,640 0.21%
Fannie Mae
92,240,828 $80,812,757 0.21%
Fannie Mae
78,508,318 $80,366,032 0.21%
Fannie Mae
75,939,229 $76,661,793 0.20%
Government National Mortgage Association
76,821,767 $76,021,878 0.20%
Freddie Mac
76,367,473 $75,679,377 0.20%
Freddie Mac
87,664,326 $73,844,405 0.19%
Government National Mortgage Association
72,136,264 $73,825,452 0.19%
Fannie Mae
90,654,682 $72,949,125 0.19%
Government National Mortgage Association
82,738,617 $70,812,549 0.18%