iShares US MBS Usd AccIMBXFETF
13F holders, Q3 2025 (September 30)2holders +1
1new positions
0sold out
$5.48avg. 13F price*
At the end of Q3 2025, 2 institutions reported holding iShares US MBS Usd Acc (IMBXF) in their 13F filings, up 1 from Q2 2025. 1 opened new positions and 0 sold out. The largest holders were Saranac Partners Ltd ($59.2M) and Sierra Capital LLC ($20.2M).
- Company
- iShares US MBS Usd Acc
- CUSIP
- G4955M838
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 1 | $59.2M |
| Exits | 0 | $0 |
All 13F filers, Q2 2025 → Q3 2025: 10,918,222 shares bought, net +10,918,222 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 2 holders
| Saranac Partners Ltd | 12.41% | New | 10,788,157 | $59.2M |
| Sierra Capital LLC | 2.22% | Add +3.7% | 3,684,789 | $20.2M |
"% of holder's portfolio" is IMBXF's weight in each manager's 13F, not the share of iShares US MBS Usd Acc the manager owns.