iShares U.S. ETF Trust - iShares Ultra Short Duration Bond Active ETF
US ˙ BATS ˙ US46434V8789

SecurityICSH / iShares U.S. ETF Trust - iShares Ultra Short Duration Bond Active ETF
InstitutionAdvisor OS, LLC
Latest Disclosed Ownership161,235 shares
Latest Disclosed Value $ 8,161,738
Advisor OS, LLC reports 1.65% increase in ownership of ICSH / iShares U.S. ETF Trust - iShares Ultra Short Duration Bond Active ETF

On May 7, 2026 - Advisor OS, LLC filed a 13F-HR form disclosing ownership of 161,235 shares of iShares U.S. ETF Trust - iShares Ultra Short Duration Bond Active ETF (US:ICSH) valued at $8,161,716 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 158,622 shares of iShares U.S. ETF Trust - iShares Ultra Short Duration Bond Active ETF. This represents a change in shares of 1.65% during the quarter. The current value of the position is $8,135,918 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F ISHARES TR ULTRA SHORT DUR 46434V878 161,235 2,613 1.65 8,162 1.72 0.2294
2026-02-04 2025-12-31 13F ISHARES TR ULTRA SHORT DUR 46434V878 158,622 180 0.11 8,023 -0.21 0.2369
2025-11-12 2025-09-30 13F ISHARES TR ULTRA SHORT DUR 46434V878 158,442 13,750 9.50 8,041 9.58 0.6939
2025-08-14 2025-06-30 13F ISHARES TR ULTRA SHORT DUR 46434V878 144,692 15,836 12.29 7,337 12.31 0.7220
2025-05-06 2025-03-31 13F ISHARES TR ULTRA SHORT-TERM 46434V878 128,856 3,647 2.91 6,533 3.47 0.7434
2025-02-05 2024-12-31 13F ISHARES TR ULTRA SHORT-TERM 46434V878 125,209 -118,752 -48.68 6,314 -48.99 0.7312
2024-11-04 2024-09-30 13F ISHARES TR BLACKROCK ULTRA 46434V878 243,961 24,438 11.13 12,379 11.59 1.2323
2024-08-05 2024-06-30 13F ISHARES TR BLACKROCK ULTRA 46434V878 219,523 44,358 25.32 11,093 25.25 1.2148
2024-05-09 2024-03-31 13F ISHARES TR BLACKROCK ULTRA 46434V878 175,165 50,297 40.28 8,856 40.84 1.0177
2024-02-08 2023-12-31 13F ISHARES TR BLACKROCK ULTRA 46434V878 124,868 -107,280 -46.21 6,288 -46.23 0.8184
2023-11-03 2023-09-30 13F ISHARES TR BLACKROCK ULTRA 46434V878 232,148 10,734 4.85 11,696 5.01 1.7529
2023-08-08 2023-06-30 13F ISHARES TR BLACKROCK ULTRA 46434V878 221,414 23,081 11.64 11,137 11.75 1.8222
2023-04-25 2023-03-31 13F ISHARES TR BLACKROCK ULTRA 46434V878 198,333 51,681 35.24 9,966 35.81 2.3923
2023-02-01 2022-12-31 13F ISHARES TR BLACKROCK ULTRA 46434V878 146,652 -15,576 -9.60 7,338 -9.55 1.9488
2022-11-04 2022-09-30 13F ISHARES TR BLACKROCK ULTRA 46434V878 162,228 435 0.27 8,113 0.21 2.4458
2022-08-02 2022-06-30 13F ISHARES TR BLACKROCK ULTRA 46434V878 161,793 -5,275 -3.16 8,096 -3.37 2.3619
2022-05-11 2022-03-31 13F ISHARES TR BLACKROCK ULTRA 46434V878 167,068 167,068 8,378 2.4260
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.