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

SecurityIWB / iShares Trust - iShares Russell 1000 ETF
InstitutionMather Group, Llc.
Latest Disclosed Ownership19,276 shares
Latest Disclosed Value $ 6,873,188
Mather Group, Llc. reports 0.86% decrease in ownership of IWB / iShares Trust - iShares Russell 1000 ETF

On April 13, 2026 - Mather Group, Llc. filed a 13F-HR form disclosing ownership of 19,276 shares of iShares Trust - iShares Russell 1000 ETF (US:IWB) valued at $6,873,051 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 13, 2026 disclosing 19,443 shares of iShares Trust - iShares Russell 1000 ETF. This represents a change in shares of -0.86% during the quarter. The current value of the position is $7,973,903 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)
2026-04-13 2026-03-31 13F ISHARES TR RUS 1000 ETF 464287622 19,276 -167 -0.86 6,873 -5.33 0.0686
2026-01-13 2025-12-31 13F ISHARES TR RUS 1000 ETF 464287622 19,443 -371 -1.87 7,261 0.26 0.0748
2025-10-21 2025-09-30 13F ISHARES TR RUS 1000 ETF 464287622 19,814 -563 -2.76 7,242 4.65 0.0731
2025-07-15 2025-06-30 13F ISHARES TR RUS 1000 ETF 464287622 20,377 -215 -1.04 6,919 9.55 0.0739
2025-04-25 2025-03-31 13F ISHARES TR RUS 1000 ETF 464287622 20,592 -61 -0.30 6,316 -5.07 0.0730
2025-01-27 2024-12-31 13F ISHARES TR RUS 1000 ETF 464287622 20,653 -6 -0.03 6,653 2.45 0.0863
2024-10-07 2024-09-30 13F ISHARES TR RUS 1000 ETF 464287622 20,659 -913 -4.23 6,495 4.52 0.0834
2024-07-09 2024-06-30 13F ISHARES TR RUS 1000 ETF 464287622 21,572 13,329 161.70 6,213 187.51 0.0765
2024-04-09 2024-03-31 13F ISHARES TR RUS 1000 ETF 464287622 8,243 -506 -5.78 2,162 -5.80 0.0341
2024-02-05 2023-12-31 13F ISHARES TR RUS 1000 ETF 464287622 8,749 -86 -0.97 2,295 10.55 0.0360
2023-11-13 2023-09-30 13F ISHARES TR RUS 1000 ETF 464287622 8,835 -11,428 -56.40 2,076 -57.98 0.0368
2023-08-08 2023-06-30 13F ISHARES TR RUS 1000 ETF 464287622 20,263 12,816 172.10 4,939 194.45 0.0787
2023-05-09 2023-03-31 13F ISHARES TR RUS 1000 ETF 464287622 7,447 340 4.78 1,677 12.10 0.0298
2023-03-10 2022-12-31 13F ISHARES TR RUS 1000 ETF 464287622 7,107 265 3.87 1,496 10.81 0.0288
2022-11-15 2022-09-30 13F ISHARES TR RUS 1000 ETF 464287622 6,842 642 10.35 1,350 4.81 0.0291
2022-08-16 2022-06-30 13F ISHARES TR RUS 1000 ETF 464287622 6,200 34 0.55 1,288 -16.47 0.0294
2022-05-13 2022-03-31 13F ISHARES TR RUS 1000 ETF 464287622 6,166 1,025 19.94 1,542 13.47 0.0304
2022-02-15 2021-12-31 13F ISHARES TR RUS 1000 ETF 464287622 5,141 -61 -1.17 1,359 8.11 0.0266
2021-11-04 2021-09-30 13F ISHARES TR RUS 1000 ETF 464287622 5,202 388 8.06 1,257 7.90 0.0302
2021-08-13 2021-06-30 13F ISHARES TR RUS 1000 ETF 464287622 4,814 -203 -4.05 1,165 3.74 0.0294
2021-05-14 2021-03-31 13F ISHARES TR RUS 1000 ETF 464287622 5,017 420 9.14 1,123 15.30 0.0318
2021-02-12 2020-12-31 13F ISHARES TR RUS 1000 ETF 464287622 4,597 1,158 33.67 974 51.24 0.0318
2020-11-13 2020-09-30 13F ISHARES TR RUS 1000 ETF 464287622 3,439 762 28.46 644 40.00 0.0253
2020-08-14 2020-06-30 13F ISHARES TR RUS 1000 ETF 464287622 2,677 -3,432 -56.18 460 -46.82 0.0211
2020-05-14 2020-03-31 13F ISHARES TR RUS 1000 ETF 464287622 6,109 4,737 345.26 865 253.06 0.0605
2020-02-14 2019-12-31 13F ISHARES TR RUS 1000 ETF 464287622 1,372 1,372 245 0.0154
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.