iShares Trust - iShares Russell 1000 ETF
US ˙ ARCA ˙ US4642876225

SecurityIWB / iShares Trust - iShares Russell 1000 ETF
InstitutionAssetmark, Inc
Latest Disclosed Ownership5,298 shares
Latest Disclosed Value $ 1,889,220
Assetmark, Inc reports 11.99% decrease in ownership of IWB / iShares Trust - iShares Russell 1000 ETF

On May 6, 2026 - Assetmark, Inc filed a 13F-HR form disclosing ownership of 5,298 shares of iShares Trust - iShares Russell 1000 ETF (US:IWB) valued at $1,889,055 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 6,020 shares of iShares Trust - iShares Russell 1000 ETF. This represents a change in shares of -11.99% during the quarter. The current value of the position is $2,181,875 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)
2026-05-06 2026-03-31 13F ISHARES TR RUS 1000 ETF 464287622 5,298 -722 -11.99 1,889 -15.97 0.0039
2026-01-23 2025-12-31 13F ISHARES TR RUS 1000 ETF 464287622 6,020 -126 -2.05 2,248 0.09 0.0046
2025-11-06 2025-09-30 13F ISHARES TR RUS 1000 ETF 464287622 6,146 751 13.92 2,246 22.67 0.0048
2025-08-04 2025-06-30 13F ISHARES TR RUS 1000 ETF 464287622 5,395 -2,237 -29.31 1,832 -21.75 0.0043
2025-05-06 2025-03-31 13F ISHARES TR RUS 1000 ETF 464287622 7,632 2,599 51.64 2,341 44.36 0.0064
2025-02-06 2024-12-31 13F ISHARES TR RUS 1000 ETF 464287622 5,033 908 22.01 1,621 25.08 0.0044
2024-11-01 2024-09-30 13F ISHARES TR RUS 1000 ETF 464287622 4,125 2,880 231.33 1,297 250.27 0.0037
2024-08-13 2024-06-30 13F ISHARES TR RUS 1000 ETF 464287622 1,245 1,110 822.22 370 873.68 0.0011
2024-05-07 2024-03-31 13F ISHARES TR RUS 1000 ETF 464287622 135 30 28.57 39 40.74 0.0001
2024-02-09 2023-12-31 13F ISHARES TR RUS 1000 ETF 464287622 105 -6,595 -98.43 28 -98.28 0.0001
2023-10-27 2023-09-30 13F ISHARES TR RUS 1000 ETF 464287622 6,700 2,438 57.20 1,574 51.54 0.0063
2023-08-11 2023-06-30 13F ISHARES TR RUS 1000 ETF RUS 1000 ETF 464287622 4,262 -6,382 -59.96 1,039 -56.70 0.0041
2023-05-05 2023-03-31 13F ISHARES TR RUS 1000 ETF RUS 1000 ETF 464287622 10,644 -3,679 -25.69 2,397 -20.50 0.0099
2023-02-10 2022-12-31 13F ISHARES TR RUS 1000 ETF 464287622 14,323 2,177 17.92 3,015 25.78 0.0131
2022-11-01 2022-09-30 13F ISHARES TR RUS 1000 ETF 464287622 12,146 448 3.83 2,397 -1.36 0.0112
2022-08-03 2022-06-30 13F ISHARES TR RUS 1000 ETF RUS 1000 ETF 464287622 11,698 120 1.04 2,430 -16.06 0.0109
2022-05-13 2022-03-31 13F ISHARES TR RUS 1000 ETF RUS 1000 ETF 464287622 11,578 32 0.28 2,895 -5.18 0.0121
2022-02-14 2021-12-31 13F ISHARES TR RUS 1000 ETF RUS 1000 ETF 464287622 11,546 -95 -0.82 3,053 8.49 0.0125
2021-11-12 2021-09-30 13F ISHARES TR RUS 1000 ETF ETF 464287622 11,641 -6,740 -36.67 2,814 -36.76 0.0126
2021-08-16 2021-06-30 13F ISHARES TR RUS 1000 ETF ETF 464287622 18,381 -368 -1.96 4,450 6.03 0.0206
2021-05-14 2021-03-31 13F ISHARES TR ETF 464287622 18,749 -544 -2.82 4,197 2.69 0.0216
2021-02-10 2020-12-31 13F ISHARES TR RUS 1000 ETF ETF 464287622 19,293 480 2.55 4,087 16.07 0.0228
2020-11-13 2020-09-30 13F ISHARES TR RUS 1000 ETF ETF 464287622 18,813 18,560 7,335.97 3,521 8,088.37 0.0227
2020-08-11 2020-06-30 13F ISHARES TR RUS 1000 ETF ETF 464287622 253 71 39.01 43 65.38 0.0003
2020-05-12 2020-03-31 13F ISHARES TR RUS 1000 ETF ETF 464287622 182 134 279.17 26 188.89 0.0002
2020-02-11 2019-12-31 13F ISHARES TR RUS 1000 ETF ETF 464287622 48 -10 -17.24 9 -10.00 0.0001
2019-11-13 2019-09-30 13F ISHARES TR RUS 1000 ETF ETF 464287622 58 0 0.00 10 11.11 0.0001
2019-08-14 2019-06-30 13F ISHARES TR RUS 1000 ETF ETF 464287622 58 0 0.00 9 0.00 0.0001
2019-05-14 2019-03-31 13F ISHARES TR RUS 1000 ETF ETF 464287622 58 0 0.00 9 12.50 0.0001
2019-02-13 2018-12-31 13F ISHARES TR RUS 1000 ETF ETF 464287622 58 0 0.00 8 -11.11 0.0001
2018-11-13 2018-09-30 13F ISHARES TR RUS 1000 ETF ETF 464287622 58 0 0.00 9 0.00 0.0001
2018-08-01 2018-06-30 13F ISHARES TR RUS 1000 ETF ETF 464287622 58 -20 -25.64 9 -18.18 0.0001
2018-05-16 2018-03-31 13F ISHARES TR RUS 1000 ETF ETF 464287622 78 -25 -24.27 11 -26.67 0.0001
2018-02-13 2017-12-31 13F ISHARES TR RUS 1000 ETF ETF 464287622 103 53 106.00 15 114.29 0.0002
2017-11-08 2017-09-30 13F ISHARES TR RUS 1000 ETF ETF 464287622 50 -26 -34.21 7 -30.00 0.0001
2017-08-14 2017-06-30 13F ISHARES TR RUS 1000 ETF ETF 464287622 76 17 28.81 10 25.00 0.0001
2017-09-15 2017-03-31 13F/A-1 ISHARES TR RUS 1000 ETF ETF 464287622 59 -727,344 -99.99 8 -99.99 0.0001
2017-05-08 2017-03-31 13F ISHARES TR RUS 1000 ETF ETF 464287622 59 -727,344 8
2017-09-15 2016-12-31 13F/A-1 ISHARES TR RUS 1000 ETF ETF 464287622 727,403 711,626 4,510.53 90,533 4,662.39 1.3299
2017-02-14 2016-12-31 13F ISHARES TR RUS 1000 ETF ETF 464287622 727,403 711,626 90,533
2017-09-14 2016-09-30 13F/A-1 ISHARES TR RUS 1000 ETF ETF 464287622 15,777 -540,724 -97.16 1,901 -97.08 0.0289
2016-11-04 2016-09-30 13F ISHARES TR RUS 1000 ETF ETF 464287622 15,777 -540,724 1,900
2017-09-14 2016-06-30 13F/A-1 ISHARES TR RUS 1000 ETF ETF 464287622 556,501 556,453 1,159,277.08 65,049 1,300,880.00 1.0937
2016-08-08 2016-06-30 13F ISHARES TR RUS 1000 ETF ETF 464287622 556,501 556,453 65,049
2017-09-14 2016-03-31 13F/A-1 ISHARES TR RUS 1000 ETF ETF 464287622 48 -1,061,181 -100.00 5 -100.00 0.0001
2016-05-13 2016-03-31 13F ISHARES TR RUS 1000 ETF ETF 464287622 48 -1,061,181 5
2017-09-14 2015-12-31 13F/A-1 ISHARES TR RUS 1000 ETF ETF 464287622 1,061,229 1,061,032 538,594.92 120,248 572,509.52 2.2285
2016-02-12 2015-12-31 13F ISHARES TR RUS 1000 ETF ETF 464287622 1,061,229 1,061,032 120,248
2016-01-05 2015-09-30 13F/A-1 ISHARES TR RUS 1000 ETF ETF 464287622 197 197 0.00 21 0.0004
2015-11-10 2015-09-30 13F ISHARES TR RUS 1000 ETF ETF 464287622 197 21
2015-02-03 2014-12-31 13F ISHARES TR RUS 1000 ETF ETF 464287622 0 -166,751 -100.00 0 -100.00
2014-11-10 2014-09-30 13F ISHARES TR RUS 1000 ETF ETF 464287622 166,751 122,273 274.91 18,321 274.13 0.4234
2014-08-12 2014-06-30 13F ISHARES RUS 1000 ETF ETF 464287622 44,478 44,478 4,897 0.1043
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.