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

SecurityIWB / iShares Trust - iShares Russell 1000 ETF
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership784,742 shares
Latest Disclosed Value $ 279,807,644
Mercer Global Advisors Inc /adv reports 0.98% decrease in ownership of IWB / iShares Trust - iShares Russell 1000 ETF

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 784,742 shares of iShares Trust - iShares Russell 1000 ETF (US:IWB) valued at $279,807,608 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 792,517 shares of iShares Trust - iShares Russell 1000 ETF. This represents a change in shares of -0.98% during the quarter. The current value of the position is $316,258,873 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 784,742 -7,775 -0.98 279,808 -5.46 0.4140
2026-02-17 2025-12-31 13F ISHARES TR RUS 1000 ETF 464287622 792,517 2,941 0.37 295,957 2.56 0.4511
2025-11-14 2025-09-30 13F ISHARES TR RUS 1000 ETF 464287622 789,576 6,028 0.77 288,574 8.46 0.4817
2025-08-14 2025-06-30 13F ISHARES TR RUS 1000 ETF 464287622 783,548 -227,182 -22.48 266,070 -14.18 0.5419
2025-05-15 2025-03-31 13F ISHARES TR RUS 1000 ETF 464287622 1,010,730 235,846 30.44 310,031 24.19 0.7112
2025-02-14 2024-12-31 13F ISHARES TR RUS 1000 ETF 464287622 774,884 -10,936 -1.39 249,637 1.93 0.6091
2024-11-14 2024-09-30 13F ISHARES TR RUS 1000 ETF 464287622 785,820 -12,120 -1.52 244,919 3.16 0.5732
2024-08-12 2024-06-30 13F ISHARES TR RUS 1000 ETF 464287622 797,940 -15,534 -1.91 237,419 101,361.11 0.6473
2024-05-15 2024-03-31 13F ISHARES TR RUS 1000 ETF 464287622 813,474 -3,964 -0.48 235 9.35 0.6666
2024-02-15 2023-12-31 13F ISHARES TR RUS 1000 ETF 464287622 817,438 -15,533 -1.86 214 9.74 0.6448
2023-11-15 2023-09-30 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 832,971 -43,457 -4.96 196 -8.45 0.7431
2023-11-14 2023-09-30 13F ISHARES TR RUS 1000 ETF 464287622 832,971 -43,457 196 0.7429
2023-08-14 2023-06-30 13F ISHARES TR RUS 1000 ETF 464287622 876,428 469,447 115.35 214 267.24 0.8479
2023-05-16 2023-03-31 13F ISHARES TR RUS 1000 ETF 464287622 406,981 67,932 20.04 58 -18.31 0.2635
2023-02-09 2022-12-31 13F ISHARES TR RUS 1000 ETF 464287622 339,049 -57,577 -14.52 71 -99.91 0.3575
2022-11-15 2022-09-30 13F ISHARES TR RUS 1000 ETF 464287622 396,626 224,974 131.06 78,266 119.47 0.4645
2022-08-10 2022-06-30 13F ISHARES TR RUS 1000 ETF 464287622 171,652 66,852 63.79 35,662 36.08 0.2183
2022-05-10 2022-03-31 13F ISHARES TR RUS 1000 ETF 464287622 104,800 3,638 3.60 26,207 -2.03 0.1543
2022-02-04 2021-12-31 13F ISHARES TR RUS 1000 ETF 464287622 101,162 4,578 4.74 26,750 14.59 0.1652
2021-11-10 2021-09-30 13F ISHARES TR RUS 1000 ETF 464287622 96,584 1,176 1.23 23,345 1.08 0.1631
2021-08-10 2021-06-30 13F ISHARES TR RUS 1000 ETF 464287622 95,408 25 0.03 23,096 8.18 0.1776
2021-08-10 2021-03-31 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 95,383 -16,970 -15.10 21,349 -10.30 0.1942
2021-05-11 2021-03-31 13F ISHARES TR RUS 1000 ETF 464287622 95,226 -17,127 21,314 0.2041
2021-02-12 2020-12-31 13F ISHARES TR RUS 1000 ETF 464287622 112,353 7,565 7.22 23,801 21.37 0.2972
2020-12-10 2020-09-30 13F ISHARES TR RUS 1000 ETF 464287622 104,788 61,786 143.68 19,611 165.62 0.2950
2020-08-10 2020-06-30 13F ISHARES TR RUS 1000 ETF 464287622 43,002 -78,939 -64.74 7,383 -57.22 0.1341
2020-05-18 2020-03-31 13F ISHARES TR RUS 1000 ETF 464287622 121,941 84,780 228.14 17,258 160.30 0.3798
2020-02-13 2019-12-31 13F ISHARES TR RUS 1000 ETF COM 464287622 37,161 1,139 3.16 6,630 11.86 0.1324
2019-11-12 2019-09-30 13F ISHARES TR RUS 1000 ETF COM 464287622 36,022 884 2.52 5,927 3.62 0.1394
2019-08-14 2019-06-30 13F ISHARES TR RUS 1000 ETF COM 464287622 35,138 -11,325 -24.37 5,720 -21.74 0.1516
2019-04-23 2019-03-31 13F/A-1 ISHARES TR RUS 1000 ETF COM 464287622 46,463 46,463 7,309 0.2628
2019-04-12 2019-03-31 13F ISHARES TR RUS 1000 ETF COM 464287622 71,469 9,912 0.5282
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.