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

SecurityIWB / iShares Trust - iShares Russell 1000 ETF
InstitutionMorgan Stanley
Latest Disclosed Ownership2,029,785 shares
Latest Disclosed Value $ 723,741,421
Morgan Stanley reports 2.88% decrease in ownership of IWB / iShares Trust - iShares Russell 1000 ETF

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 2,029,785 shares of iShares Trust - iShares Russell 1000 ETF (US:IWB) valued at $723,740,140 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 2,089,875 shares of iShares Trust - iShares Russell 1000 ETF. This represents a change in shares of -2.88% during the quarter. The current value of the position is $839,661,161 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 2,029,785 -60,090 -2.88 723,741 -7.27 0.0436
2026-05-27 2025-12-31 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 2,089,875 -907,914 -30.29 780,444 -28.77 0.0466
2026-02-13 2025-12-31 13F ISHARES TR RUS 1000 ETF 464287622 2,089,875 -907,914 780,444 0.0466
2026-05-27 2025-09-30 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 2,997,789 1,084,252 56.66 1,095,633 68.62 0.0663
2025-11-14 2025-09-30 13F ISHARES TR RUS 1000 ETF 464287622 2,997,789 1,084,252 1,095,633 0.0663
2025-08-15 2025-06-30 13F ISHARES TR RUS 1000 ETF 464287622 1,913,537 -270,377 -12.38 649,781 -3.00 0.0423
2025-05-15 2025-03-31 13F ISHARES TR RUS 1000 ETF 464287622 2,183,914 -773 -0.04 669,895 -4.82 0.0479
2025-05-15 2024-12-31 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 2,184,687 -635,441 -22.53 703,820 -20.62 0.0493
2025-02-14 2024-12-31 13F ISHARES TR RUS 1000 ETF 464287622 2,184,687 -635,441 703,820 0.0493
2025-05-14 2024-09-30 13F/A-2 ISHARES TR RUS 1000 ETF 464287622 2,820,128 22,741 0.81 886,621 6.52 0.0643
2025-02-14 2024-09-30 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 2,820,128 22,741 886,621 0.0643
2024-11-14 2024-09-30 13F ISHARES TR RUS 1000 ETF 464287622 2,820,128 22,741 886,621 0.0076
2025-05-14 2024-06-30 13F/A-2 ISHARES TR RUS 1000 ETF 464287622 2,797,387 58,562 2.14 832,335 5.51 0.0644
2024-10-17 2024-06-30 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 2,797,387 58,562 832,335 0.0644
2024-08-14 2024-06-30 13F ISHARES TR RUS 1000 ETF 464287622 2,797,387 58,562 832,335 0.0644
2024-10-17 2024-03-31 13F/A-2 ISHARES TR RUS 1000 ETF 464287622 2,738,825 376,613 15.94 788,865 27.34 0.0633
2024-08-16 2024-03-31 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 2,738,825 376,613 788,865 0.0074
2024-05-15 2024-03-31 13F ISHARES TR RUS 1000 ETF 464287622 2,738,825 376,613 788,865 0.0633
2024-08-16 2023-12-31 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 2,362,212 -11,417 -0.48 619,515 11.11 0.0546
2024-02-13 2023-12-31 13F ISHARES TR RUS 1000 ETF 464287622 2,362,212 -11,417 619,515 0.0546
2023-11-15 2023-09-30 13F ISHARES TR RUS 1000 ETF 464287622 2,373,629 -13,988 -0.59 557,590 -4.19 0.0567
2023-08-14 2023-06-30 13F ISHARES TR RUS 1000 ETF 464287622 2,387,617 430,508 22.00 581,958 32.02 0.0574
2023-05-15 2023-03-31 13F ISHARES TR RUS 1000 ETF 464287622 1,957,109 -239,482 -10.90 440,800 -4.68 0.0473
2023-02-14 2022-12-31 13F ISHARES TR RUS 1000 ETF 464287622 2,196,591 301,825 15.93 462,427 23.68 0.0525
2022-11-14 2022-09-30 13F ISHARES TR RUS 1000 ETF 464287622 1,894,766 193,435 11.37 373,894 5.78 0.0510
2022-10-27 2022-06-30 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 1,701,331 57,450 3.49 353,469 -14.02 0.0459
2022-08-15 2022-06-30 13F ISHARES TR RUS 1000 ETF 464287622 1,701,331 57,450 353,469 0.0093
2022-10-27 2022-03-31 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 1,643,881 -230,473 -12.30 411,085 -17.06 0.0554
2022-05-13 2022-03-31 13F ISHARES TR RUS 1000 ETF 464287622 1,643,881 -230,473 411,085 0.0554
2022-02-14 2021-12-31 13F ISHARES TR RUS 1000 ETF 464287622 1,874,354 556,678 42.25 495,635 55.62 0.0612
2021-11-15 2021-09-30 13F ISHARES TR RUS 1000 ETF 464287622 1,317,676 7,219 0.55 318,495 0.40 0.0429
2021-08-23 2021-06-30 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 1,310,457 3,219 0.25 317,236 8.42 0.0418
2021-08-16 2021-06-30 13F ISHARES TR RUS 1000 ETF 464287622 1,310,457 3,219 317,236 0.0087
2021-05-17 2021-03-31 13F ISHARES TR RUS 1000 ETF 464287622 1,307,238 -197,020 -13.10 292,600 -8.18 0.0430
2021-02-16 2020-12-31 13F ISHARES TR RUS 1000 ETF 464287622 1,504,258 104,658 7.48 318,662 21.66 0.0492
2020-11-13 2020-09-30 13F ISHARES TR RUS 1000 ETF 464287622 1,399,600 126,477 9.93 261,935 19.84 0.0507
2020-08-14 2020-06-30 13F ISHARES TR RUS 1000 ETF 464287622 1,273,123 -244,109 -16.09 218,569 1.79 0.0484
2020-05-26 2020-03-31 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 1,517,232 -110,515 -6.79 214,734 -26.06 0.0584
2020-05-15 2020-03-31 13F ISHARES TR RUS 1000 ETF 464287622 1,517,232 -110,515 214,734 16,496.0476
2020-02-14 2019-12-31 13F ISHARES TR RUS 1000 ETF 464287622 1,627,747 214,511 15.18 290,423 24.89 0.0675
2019-11-14 2019-09-30 13F ISHARES TR RUS 1000 ETF 464287622 1,413,236 185,437 15.10 232,534 16.34 0.0616
2019-08-14 2019-06-30 13F ISHARES TR RUS 1000 ETF 464287622 1,227,799 -131,408 -9.67 199,873 -6.52 0.0532
2019-05-15 2019-03-31 13F ISHARES TR RUS 1000 ETF 464287622 1,359,207 -292,327 -17.70 213,816 -6.65 0.0605
2019-02-14 2018-12-31 13F ISHARES TR RUS 1000 ETF 464287622 1,651,534 444,952 36.88 229,051 17.39 0.0685
2019-04-23 2018-09-30 13F/A-2 ISHARES TR RUS 1000 ETF 464287622 1,206,582 -318,143 -20.87 195,117 -15.80 0.0488
2018-11-20 2018-09-30 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 1,206,582 0 195,117 0.0488
2018-11-14 2018-09-30 13F ISHARES TR RUS 1000 ETF 464287622 1,206,582 -318,143 195,117
2019-04-23 2018-06-30 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 1,524,725 482,122 46.24 231,728 51.34 0.0626
2018-08-14 2018-06-30 13F ISHARES TR RUS 1000 ETF 464287622 1,524,725 482,122 231,728
2019-04-23 2018-03-31 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 1,042,603 -18,845 -1.78 153,117 -2.93 0.0425
2018-05-14 2018-03-31 13F ISHARES TR RUS 1000 ETF 464287622 1,042,603 -18,845 153,117
2019-04-23 2017-12-31 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 1,061,448 -46,857 -4.23 157,741 1.75 0.0432
2018-02-14 2017-12-31 13F ISHARES TR RUS 1000 ETF 464287622 1,061,448 -46,857 157,741
2017-11-14 2017-09-30 13F ISHARES TR RUS 1000 ETF 464287622 1,108,305 -427,423 -27.83 155,029 -25.37 0.0464
2017-08-11 2017-06-30 13F ISHARES TR RUS 1000 ETF 464287622 1,535,728 436,169 39.67 207,738 43.95 0.0628
2017-05-22 2017-03-31 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 1,099,559 -867,119 -44.09 144,317 -41.04 0.0444
2017-05-12 2017-03-31 13F ISHARES TR RUS 1000 ETF 464287622 1,099,559 144,317
2017-02-22 2016-12-31 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 1,966,678 1,182,315 150.74 244,773 159.06 0.0801
2017-02-13 2016-12-31 13F ISHARES TR RUS 1000 ETF 464287622 1,966,678 244,773
2016-11-10 2016-09-30 13F ISHARES TR RUS 1000 ETF 464287622 784,363 113,943 17.00 94,485 20.57 0.0323
2016-08-12 2016-06-30 13F ISHARES TR RUS 1000 ETF 464287622 670,420 -54,915 -7.57 78,366 -5.29 0.0283
2016-05-12 2016-03-31 13F ISHARES TR RUS 1000 ETF 464287622 725,335 -6,288 -0.86 82,740 -0.19 0.0318
2016-02-09 2015-12-31 13F ISHARES TR RUS 1000 ETF 464287622 731,623 -44,716 -5.76 82,900 -0.25 0.0300
2016-02-08 2015-09-30 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 776,339 -222,238 -22.26 83,106 -28.28 0.0307
2015-11-09 2015-09-30 13F ISHARES TR RUS 1000 ETF 464287622 776,339 83,106
2015-08-12 2015-06-30 13F ISHARES TR RUS 1000 ETF 464287622 998,577 -50,045 -4.77 115,876 -4.62 0.0402
2015-05-14 2015-03-31 13F ISHARES TR RUS 1000 ETF 464287622 1,048,622 368,197 54.11 121,483 55.75 0.0447
2015-02-13 2014-12-31 13F ISHARES TR RUS 1000 ETF 464287622 680,425 -283,087 -29.38 77,997 -26.32 0.0285
2014-12-16 2014-09-30 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 963,512 514,597 114.63 105,860 125.08 0.0407
2014-11-14 2014-09-30 13F ISHARES TR RUS 1000 ETF 464287622 963,512 105,860
2014-05-13 2014-03-31 13F ISHARES RUS 1000 ETF 464287622 448,915 -67,061 -13.00 47,032 -11.65 0.0197
2014-02-13 2013-12-31 13F ISHARES RUS 1000 ETF 464287622 515,976 -12,042 -2.28 53,233 7.06 0.0226
2013-11-13 2013-09-30 13F ISHARES RUSSELL 1000 INDEX COM 464287622 528,018 31,499 6.34 49,724 11.36 0.0235
2013-08-08 2013-06-30 13F ISHARES RUSSELL 1000 INDEX COM 464287622 496,519 496,519 44,651 0.0225
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.