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
InstitutionFlagship Harbor Advisors, Llc
Latest Disclosed Ownership162,966 shares
Latest Disclosed Value $ 8,249,344
Flagship Harbor Advisors, Llc reports 14.26% increase in ownership of ICSH / iShares U.S. ETF Trust - iShares Ultra Short Duration Bond Active ETF

On April 28, 2026 - Flagship Harbor Advisors, Llc filed a 13F-HR form disclosing ownership of 162,966 shares of iShares U.S. ETF Trust - iShares Ultra Short Duration Bond Active ETF (US:ICSH) valued at $8,249,339 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 142,631 shares of iShares U.S. ETF Trust - iShares Ultra Short Duration Bond Active ETF. This represents a change in shares of 14.26% during the quarter. The current value of the position is $8,220,005 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-28 2026-03-31 13F ISHARES TR ULTRA SHORT DUR 46434V878 162,966 20,335 14.26 8,249 14.35 0.3628
2026-01-21 2025-12-31 13F ISHARES ULTRA MF Closed and MF Open 46434V878 142,631 -16,450 -10.34 7,214 -10.64 0.3404
2025-11-05 2025-09-30 13F ISHARES TR ULTRA SHORT DUR 46434V878 159,081 20,745 15.00 8,073 15.08 0.3512
2025-08-04 2025-06-30 13F ISHARES TR ULTRA SHORT DUR 46434V878 138,336 20,351 17.25 7,015 17.29 0.3323
2025-04-22 2025-03-31 13F ISHARES TR ULTRA SHORT-TERM 46434V878 117,985 31,292 36.10 5,982 36.83 0.3145
2025-01-21 2024-12-31 13F ISHARES TR ULTRA SHORT-TERM 46434V878 86,693 33,742 63.72 4,372 62.73 0.2296
2024-10-21 2024-09-30 13F ISHARES TR BLACKROCK ULTRA 46434V878 52,951 35,478 203.04 2,687 204.54 0.1475
2025-12-02 2024-06-30 13F ISHARES TR BLACKROCK ULTRA 46434V878 17,473 1,002 6.08 883 6.01 0.0531
2024-04-16 2024-03-31 13F ISHARES TR BLACKROCK ULTRA 46434V878 16,471 16,471 833 0.0535
2021-02-08 2020-12-31 13F ISHARES ULTRA MF Closed and MF Open 46434V878 0 -300 -100.00 0 -100.00
2020-10-13 2020-09-30 13F ISHARES ULTRA MF Closed and MF Open 46434V878 300 0 0.00 15 0.00 0.0020
2020-07-31 2020-06-30 13F ISHARES ULTRA MF Closed and MF Open 46434V878 300 300 15 0.0022
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.