iShares MBS ETF
iShares Trust · Series S000013702 · 1 share classes
One fund, 1 share classes:MBB
$39.82B NAV
11,152 positions · as of 2026-02-28 · filed 2026-04-23
data updated 2026-07-30
data updated 2026-07-30
Allocation
Asset groups · long / short shown separately, never netted · 2026 Q1
| Group | Long | Short | Net %NAV |
|---|---|---|---|
| Securitized | 98.44% | — | 98.44% |
| Cash & short-term | 5.90% | — | 5.90% |
vs 2025Q4: 73 new105 exited
Top holdings
By % of NAV · every resolvable issuer links to its company page
| Ticker | Issuer | %NAV | Value |
|---|---|---|---|
| — | BLACKROCK CASH FUNDS | 5.90% | $2.35B |
| — | Freddie Mac | 1.07% | $427.59M |
| — | Government National Mortgage Association | 1.00% | $399.52M |
| — | UMBS, TBA | 0.57% | $227.79M |
| — | Government National Mortgage Association | 0.56% | $221.29M |
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Full holdings with filed share counts, the complete quarter-over-quarter change list, and the fixed-income profile for every bond position — free with an account, no card required.
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