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

SecurityIWB / iShares Trust - iShares Russell 1000 ETF
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership43,891 shares
Latest Disclosed Value $ 16,390,655
Alliancebernstein L.p. reports 61.85% increase in ownership of IWB / iShares Trust - iShares Russell 1000 ETF

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 43,891 shares of iShares Trust - iShares Russell 1000 ETF (US:IWB) valued at $15,649,775 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 27,118 shares of iShares Trust - iShares Russell 1000 ETF. This represents a change in shares of 61.85% during the quarter. The current value of the position is $18,075,631 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)
2026-05-15 2026-03-31 13F ISHARES TR RUS 1000 ETF 464287622 43,891 16,773 61.85 16,391 61.86 0.0053
2026-02-17 2025-12-31 13F ISHARES TR RUS 1000 ETF 464287622 27,118 2,957 12.24 10,127 14.68 0.0032
2025-11-14 2025-09-30 13F ISHARES TR RUS 1000 ETF 464287622 24,161 2,505 11.57 8,830 20.09 0.0028
2025-08-14 2025-06-30 13F ISHARES TR RUS 1000 ETF 464287622 21,656 1,547 7.69 7,354 19.21 0.0024
2025-05-15 2025-03-31 13F ISHARES TR RUS 1000 ETF 464287622 20,109 1,036 5.43 6,168 0.39 0.0022
2025-02-12 2024-12-31 13F ISHARES TR RUS 1000 ETF 464287622 19,073 257 1.37 6,145 3.87 0.0021
2024-11-14 2024-09-30 13F ISHARES TR RUS 1000 ETF 464287622 18,816 -1,366 -6.77 5,916 -1.48 0.0020
2024-08-14 2024-06-30 13F ISHARES TR RUS 1000 ETF 464287622 20,182 84 0.42 6,005 3.73 0.0021
2024-05-14 2024-03-31 13F ISHARES TR RUS 1000 ETF 464287622 20,098 3,955 24.50 5,789 36.74 0.0020
2024-02-14 2023-12-31 13F ISHARES TR RUS 1000 ETF 464287622 16,143 119 0.74 4,234 12.46 0.0016
2023-11-14 2023-09-30 13F ISHARES TR RUS 1000 ETF 464287622 16,024 -1,628 -9.22 3,764 -12.51 0.0016
2023-08-15 2023-06-30 13F ISHARES TR RUS 1000 ETF 464287622 17,652 3,106 21.35 4,302 31.32 0.0018
2023-05-15 2023-03-31 13F ISHARES TR RUS 1000 ETF 464287622 14,546 271 1.90 3,276 9.02 0.0014
2023-02-15 2022-12-31 13F ISHARES TR RUS 1000 ETF 464287622 14,275 -3,310 -18.82 3,005 -13.40 0.0014
2022-11-15 2022-09-30 13F ISHARES TR RUS 1000 ETF 464287622 17,585 3,797 27.54 3,470 21.12 0.0017
2022-08-15 2022-06-30 13F ISHARES TR RUS 1000 ETF 464287622 13,788 1,271 10.15 2,865 -8.47 0.0013
2022-05-13 2022-03-31 13F ISHARES TR RUS 1000 ETF 464287622 12,517 2,325 22.81 3,130 16.14 0.0012
2022-02-14 2021-12-31 13F ISHARES TR RUS 1000 ETF 464287622 10,192 5 0.05 2,695 9.46 0.0010
2021-11-10 2021-09-30 13F ISHARES TR RUS 1000 ETF 464287622 10,187 1,321 14.90 2,462 14.73 0.0010
2021-07-30 2021-06-30 13F ISHARES TR RUS 1000 ETF 464287622 8,866 -82 -0.92 2,146 7.14 0.0009
2021-05-06 2021-03-31 13F ISHARES TR RUS 1000 ETF 464287622 8,948 -10 -0.11 2,003 5.53 0.0009
2021-02-08 2020-12-31 13F ISHARES TR RUS 1000 ETF 464287622 8,958 -750 -7.73 1,898 4.46 0.0009
2020-11-12 2020-09-30 13F ISHARES TR RUS 1000 ETF 464287622 9,708 -770 -7.35 1,817 1.00 0.0010
2020-08-13 2020-06-30 13F ISHARES TR RUS 1000 ETF 464287622 10,478 -1,413 -11.88 1,799 6.89 0.0011
2020-05-14 2020-03-31 13F ISHARES TR RUS 1000 ETF 464287622 11,891 252 2.17 1,683 -18.97 0.0012
2020-02-18 2019-12-31 13F ISHARES TR RUS 1000 ETF 464287622 11,639 -195 -1.65 2,077 6.68 0.0012
2019-11-14 2019-09-30 13F ISHARES TR RUS 1000 ETF 464287622 11,834 -213 -1.77 1,947 -0.71 0.0012
2019-08-14 2019-06-30 13F ISHARES TR RUS 1000 ETF 464287622 12,047 -316 -2.56 1,961 0.82 0.0012
2019-05-14 2019-03-31 13F ISHARES TR RUS 1000 ETF 464287622 12,363 -180 -1.44 1,945 11.78 0.0013
2019-02-13 2018-12-31 13F ISHARES TR RUS 1000 ETF 464287622 12,543 -3 -0.02 1,740 -14.24 0.0013
2018-11-08 2018-09-30 13F ISHARES TR RUS 1000 ETF 464287622 12,546 1,819 16.96 2,029 24.48 0.0013
2018-08-13 2018-06-30 13F ISHARES TR RUS 1000 ETF 464287622 10,727 382 3.69 1,630 7.31 0.0011
2018-05-14 2018-03-31 13F ISHARES TR RUS 1000 ETF 464287622 10,345 -478 -4.42 1,519 -5.53 0.0011
2018-02-13 2017-12-31 13F ISHARES TR RUS 1000 ETF 464287622 10,823 823 8.23 1,608 14.94 0.0012
2017-11-13 2017-09-30 13F ISHARES TR RUS 1000 ETF 464287622 10,000 -103 -1.02 1,399 2.34 0.0010
2017-08-10 2017-06-30 13F ISHARES TR RUS 1000 ETF 464287622 10,103 5,137 103.44 1,367 109.66 0.0011
2017-05-11 2017-03-31 13F ISHARES TR RUS 1000 ETF 464287622 4,966 1,256 33.85 652 41.13 0.0005
2017-02-13 2016-12-31 13F ISHARES TR RUS 1000 ETF 464287622 3,710 0 0.00 462 3.36 0.0004
2016-11-10 2016-09-30 13F ISHARES TR RUS 1000 ETF 464287622 3,710 -344 -8.49 447 -5.70 0.0004
2016-08-11 2016-06-30 13F ISHARES TR RUS 1000 ETF 464287622 4,054 125 3.18 474 5.80 0.0004
2016-05-13 2016-03-31 13F ISHARES TR RUS 1000 ETF 464287622 3,929 2,521 179.05 448 202.70 0.0004
2014-05-13 2014-03-31 13F ISHARES RUSSELL 1000 ETF RUS 1000 ETF 464287622 1,408 1,408 148 0.0001
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.