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
InstitutionParallel Advisors, LLC
Latest Disclosed Ownership311,906 shares
Latest Disclosed Value $ 15,776,213
Parallel Advisors, LLC ownership in ICSH / iShares U.S. ETF Trust - iShares Ultra Short Duration Bond Active ETF

On February 11, 2026 - Parallel Advisors, LLC filed a 13F-HR form disclosing ownership of 311,906 shares of iShares U.S. ETF Trust - iShares Ultra Short Duration Bond Active ETF (US:ICSH) valued at $15,776,205 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 226,348 shares of iShares U.S. ETF Trust - iShares Ultra Short Duration Bond Active ETF. This represents a change in shares of 37.80% during the quarter. The current value of the position is $15,738,777 USD.

Parallel Advisors, LLC has a history of taking positions in derivatives of the underlying security (ICSH) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

ICSH / iShares U.S. ETF Trust - iShares Ultra Short Duration Bond Active ETF Historical Put/Call Ratio
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)
2026-02-11 2025-12-31 13F ISHARES ULTRA SHORT DURATION BOND ACTIVE ETF ETF 46434V878 311,906 85,558 37.80 15,776 37.34 0.2886
2025-11-13 2025-09-30 13F ISHARES ULTRA SHORT DURATION BOND ACTIVE ETF ETF 46434V878 226,348 428 0.19 11,487 0.27 0.2103
2025-07-08 2025-06-30 13F ISHARES ULTRA SHORT DURATION BOND ACTIVE ETF ETF 46434V878 225,920 50,150 28.53 11,456 28.56 0.2289
2025-04-08 2025-03-31 13F ISHARES ULTRA SHORT-TERM BOND ACTIVE ETF ETF 46434V878 175,770 249 0.14 8,912 0.68 0.2010
2025-02-10 2024-12-31 13F ISHARES ULTRA SHORT-TERM BOND ACTIVE ETF ETF 46434V878 175,521 -7,843 -4.28 8,852 -4.86 0.1991
2024-11-13 2024-09-30 13F ISHARES ULTRA SHORT-TERM BOND ACTIVE ETF ETF 46434V878 183,364 -486 -0.26 9,304 0.15 0.2187
2024-08-08 2024-06-30 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 183,850 -6,073 -3.20 9,290 -3.26 0.2380
2024-05-06 2024-03-31 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 189,923 12,649 7.14 9,602 7.56 0.2602
2024-02-12 2023-12-31 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 177,274 22,503 14.54 8,928 14.49 0.2649
2024-05-20 2023-09-30 13F/A-1 BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 154,771 -21,929 -12.41 7,797 -12.27 0.2597
2023-11-14 2023-09-30 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 154,771 -21,929 7,797 0.2597
2024-05-20 2023-06-30 13F/A-1 BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 176,700 -55,869 -24.02 8,888 -23.94 0.2862
2023-08-04 2023-06-30 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 176,700 -55,869 8,888 0.2862
2024-05-20 2023-03-31 13F/A-1 BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 232,569 -320,683 -57.96 11,687 -57.79 0.3940
2023-04-25 2023-03-31 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 232,569 -320,683 11,687 0.3940
2023-02-06 2022-12-31 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 553,252 135,812 32.53 27,685 32.61 1.2005
2022-11-10 2022-09-30 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 417,440 313,049 299.88 20,876 299.62 0.9609
2022-08-01 2022-06-30 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 104,391 -19,320 -15.62 5,224 -15.73 0.2398
2022-04-28 2022-03-31 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 123,711 -80,060 -39.29 6,199 -39.63 0.2460
2022-01-20 2021-12-31 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 203,771 59,561 41.30 10,268 40.99 0.3812
2021-11-02 2021-09-30 13F/A-1 BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 144,210 45,327 45.84 7,283 45.78 0.2937
2021-08-06 2021-06-30 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 98,883 -3,828 -3.73 4,996 -3.72 0.2116
2021-04-23 2021-03-31 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 102,711 18,253 21.61 5,189 21.61 0.2448
2021-02-02 2020-12-31 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF 46434V878 84,458 19,948 30.92 4,267 30.81 0.2316
2020-10-27 2020-09-30 13F ISHARES LIQUIDITY INCOME ETF ETF 46434V878 64,510 4,493 7.49 3,262 7.51 0.2018
2020-07-16 2020-06-30 13F ISHARES LIQUIDITY INCOME ETF ETF 46434V878 60,017 7,999 15.38 3,034 16.78 0.1980
2020-04-27 2020-03-31 13F ISHARES LIQUIDITY INCOME ETF ETF 46434V878 52,018 2,035 4.07 2,598 3.26 0.2104
2020-01-30 2019-12-31 13F ISHARES LIQUIDITY INCOME ETF ETF 46434V878 49,983 19,967 66.52 2,516 66.29 0.1887
2019-11-01 2019-09-30 13F ISHARES LIQUIDITY INCOME ETF ETF 46434V878 30,016 5,500 22.43 1,513 22.51 0.1296
2019-08-05 2019-06-30 13F ISHARES LIQUIDITY INCOME ETF ETF 46434V878 24,516 8,703 55.04 1,235 55.35 0.1205
2019-05-01 2019-03-31 13F ISHARES LIQUIDITY INCOME ETF ETF 46434V878 15,813 88 0.56 795 1.02 0.0892
2019-02-05 2018-12-31 13F ISHARES LIQUIDITY INCOME ETF ETF 46434V878 15,725 -6,084 -27.90 787 -28.06 0.1097
2018-11-01 2018-09-30 13F ISHARES LIQUIDITY INCOME ETF ETF 46434V878 21,809 10,801 98.12 1,094 98.19 0.1359
2018-07-30 2018-06-30 13F ISHARES LIQUIDITY INCOME ETF ETF 46434V878 11,008 6,847 164.55 552 164.11 0.0789
2018-05-08 2018-03-31 13F ISHARES LIQUIDITY INCOME ETF ETF 46434V878 4,161 1,761 73.38 209 74.17 0.0326
2018-02-13 2017-12-31 13F ISHARES LIQUIDITY INCOME ETF ETF 46434V878 2,400 1,500 166.67 120 166.67 0.0196
2017-11-15 2017-09-30 13F/A-1 ISHARES LIQUIDITY INCOME ETF ETF 46434V878 900 900 45 0.0077
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2022-01-19 2021-12-31 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-10-22 2021-09-30 13F BLACKROCK ULTRA SHORT-TERM BOND ETF ETF Call 98,883 4,996 n/a n/a n/a
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.