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

SecurityIWB / iShares Trust - iShares Russell 1000 ETF
InstitutionCitigroup Inc
Latest Disclosed Ownership50,880 shares
Latest Disclosed Value $ 18,141,922
Citigroup Inc ownership in IWB / iShares Trust - iShares Russell 1000 ETF

On May 11, 2026 - Citigroup Inc filed a 13F-HR form disclosing ownership of 50,880 shares of iShares Trust - iShares Russell 1000 ETF (US:IWB) valued at $18,141,773 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 49,029 shares of iShares Trust - iShares Russell 1000 ETF. This represents a change in shares of 3.78% during the quarter. The current value of the position is $20,953,910 USD.

Citigroup Inc has a history of taking positions in derivatives of the underlying security (IWB) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

IWB / iShares Trust - iShares Russell 1000 ETF Historical Put/Call Ratio
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)
2026-05-11 2026-03-31 13F ISHARES TR RUS 1000 ETF 464287622 50,880 1,851 3.78 18,142 -0.92 0.0039
2026-02-13 2025-12-31 13F ISHARES TR RUS 1000 ETF 464287622 49,029 -159,240 -76.46 18,310 -75.95 0.0081
2025-11-10 2025-09-30 13F ISHARES TR RUS 1000 ETF 464287622 208,269 151,168 264.74 76,118 292.58 0.0339
2025-08-11 2025-06-30 13F ISHARES TR RUS 1000 ETF 464287622 57,101 36,786 181.08 19,390 211.17 0.0095
2025-05-12 2025-03-31 13F ISHARES TR RUS 1000 ETF 464287622 20,315 2,635 14.90 6,231 9.41 0.0032
2025-02-12 2024-12-31 13F ISHARES TR RUS 1000 ETF 464287622 17,680 -230 -1.28 5,696 1.15 0.0034
2024-11-12 2024-09-30 13F ISHARES TR RUS 1000 ETF 464287622 17,910 366 2.09 5,631 7.85 0.0033
2024-08-12 2024-06-30 13F ISHARES TR RUS 1000 ETF 464287622 17,544 -240 -1.35 5,220 1.91 0.0033
2024-05-10 2024-03-31 13F ISHARES TR RUS 1000 ETF 464287622 17,784 122 0.69 5,122 10.58 0.0034
2024-02-09 2023-12-31 13F ISHARES TR RUS 1000 ETF 464287622 17,662 -1,850 -9.48 4,632 1.07 0.0033
2023-12-06 2023-09-30 13F/A-1 ISHARES TR RUS 1000 ETF 464287622 19,512 -235 -1.19 4,584 -4.78 0.0034
2023-11-09 2023-09-30 13F ISHARES TR RUS 1000 ETF 464287622 19,512 -235 4,584 0.0014
2023-08-10 2023-06-30 13F ISHARES TR RUS 1000 ETF 464287622 19,747 -506 -2.50 4,813 5.53 0.0032
2023-05-11 2023-03-31 13F ISHARES TR RUS 1000 ETF 464287622 20,253 2,055 11.29 4,562 19.06 0.0032
2023-02-09 2022-12-31 13F ISHARES TR RUS 1000 ETF 464287622 18,198 -1,845 -9.21 3,831 -3.16 0.0031
2022-11-10 2022-09-30 13F ISHARES TR RUS 1000 ETF 464287622 20,043 -6,599 -24.77 3,956 -28.53 0.0028
2022-08-10 2022-06-30 13F ISHARES TR RUS 1000 ETF 464287622 26,642 1,067 4.17 5,535 -13.45 0.0041
2022-05-12 2022-03-31 13F ISHARES TR RUS 1000 ETF 464287622 25,575 2,289 9.83 6,395 3.85 0.0039
2022-02-10 2021-12-31 13F ISHARES TR RUS 1000 ETF 464287622 23,286 517 2.27 6,158 11.88 0.0033
2021-11-10 2021-09-30 13F ISHARES TR RUS 1000 ETF 464287622 22,769 -120,149 -84.07 5,504 -84.09 0.0033
2021-08-10 2021-06-30 13F ISHARES TR RUS 1000 ETF 464287622 142,918 2,604 1.86 34,597 10.16 0.0208
2021-05-13 2021-03-31 13F ISHARES TR RUS 1000 ETF 464287622 140,314 50,383 56.02 31,406 64.84 0.0203
2021-02-11 2020-12-31 13F ISHARES TR RUS 1000 ETF 464287622 89,931 -112,483 -55.57 19,052 -49.71 0.0112
2020-11-12 2020-09-30 13F ISHARES TR RUS 1000 ETF 464287622 202,414 -9,522 -4.49 37,882 4.11 0.0247
2020-08-12 2020-06-30 13F ISHARES TR RUS 1000 ETF 464287622 211,936 147,541 229.12 36,385 299.22 0.0284
2020-05-12 2020-03-31 13F ISHARES TR RUS 1000 ETF 464287622 64,395 -588,098 -90.13 9,114 -92.17 0.0082
2020-02-12 2019-12-31 13F ISHARES TR RUS 1000 ETF 464287622 652,493 -14,098 -2.11 116,418 6.14 0.0843
2019-11-08 2019-09-30 13F ISHARES TR RUS 1000 ETF 464287622 666,591 148,261 28.60 109,681 29.99 0.0870
2019-08-12 2019-06-30 13F ISHARES TR RUS 1000 ETF 464287622 518,330 25,545 5.18 84,379 8.85 0.0682
2019-05-13 2019-03-31 13F ISHARES TR RUS 1000 ETF 464287622 492,785 61,182 14.18 77,520 29.50 0.0747
2019-02-12 2018-12-31 13F ISHARES TR RUS 1000 ETF 464287622 431,603 -161,703 -27.25 59,859 -37.61 0.0606
2018-11-13 2018-09-30 13F ISHARES TR RUS 1000 ETF 464287622 593,306 248,560 72.10 95,944 83.12 0.0856
2018-08-10 2018-06-30 13F ISHARES TR RUS 1000 ETF 464287622 344,746 -386,625 -52.86 52,394 -51.20 0.0481
2018-05-11 2018-03-31 13F ISHARES TR RUS 1000 ETF 464287622 731,371 -156,012 -17.58 107,356 -18.59 0.0884
2018-02-12 2017-12-31 13F ISHARES TR RUS 1000 ETF 464287622 887,383 389,941 78.39 131,874 89.52 0.1057
2017-11-13 2017-09-30 13F ISHARES TR RUS 1000 ETF 464287622 497,442 -292,833 -37.05 69,582 -34.91 0.0570
2017-08-11 2017-06-30 13F ISHARES TR RUS 1000 ETF 464287622 790,275 -22,854 -2.81 106,901 0.17 0.0964
2017-05-12 2017-03-31 13F ISHARES TR RUS 1000 ETF 464287622 813,129 133,016 19.56 106,723 26.08 0.0951
2017-02-10 2016-12-31 13F ISHARES TR RUS 1000 ETF 464287622 680,113 -1,036 -0.15 84,647 3.16 0.0763
2016-11-10 2016-09-30 13F ISHARES TR RUS 1000 ETF 464287622 681,149 297,920 77.74 82,051 83.15 0.0767
2016-08-12 2016-06-30 13F ISHARES TR RUS 1000 ETF 464287622 383,229 -54,115 -12.37 44,800 -10.20 0.0457
2016-05-13 2016-03-31 13F ISHARES TR RUS 1000 ETF 464287622 437,344 144,219 49.20 49,887 50.19 0.0560
2016-02-12 2015-12-31 13F ISHARES TR RUS 1000 ETF 464287622 293,125 248,364 554.87 33,216 593.30 0.0331
2015-11-13 2015-09-30 13F ISHARES TR RUS 1000 ETF 464287622 44,761 -14,601 -24.60 4,791 -30.44 0.0045
2015-08-13 2015-06-30 13F ISHARES TR RUS 1000 ETF 464287622 59,362 -6,210 -9.47 6,888 -9.33 0.0061
2015-05-14 2015-03-31 13F ISHARES TR RUS 1000 ETF 464287622 65,572 10,738 19.58 7,597 20.86 0.0073
2015-02-17 2014-12-31 13F ISHARES TR RUS 1000 ETF 464287622 54,834 -199,844 -78.47 6,286 -77.54 0.0056
2014-11-14 2014-09-30 13F ISHARES TR RUS 1000 ETF 464287622 254,678 4,111 1.64 27,982 1.42 0.0245
2014-08-14 2014-06-30 13F ISHARES RUS 1000 ETF 464287622 250,567 -295,496 -54.11 27,589 -51.78 0.0265
2014-05-15 2014-03-31 13F ISHARES RUS 1000 ETF 464287622 546,063 105,082 23.83 57,211 25.75 0.0585
2014-02-14 2013-12-31 13F ISHARES RUS 1000 ETF 464287622 440,981 400,945 1,001.46 45,496 1,106.79 0.0412
2013-11-14 2013-09-30 13F ISHARES RUS 1000 ETF 464287622 40,036 -190,572 -82.64 3,770 -81.69 0.0035
2013-08-14 2013-06-30 13F ISHARES TR RUSSELL 1000 464287622 230,608 230,608 20,586 0.0203
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2017-08-11 2017-06-30 13F ISHARES TR RUS 1000 ETF Call 0 -100.00 0 -100.00 n/a n/a n/a
2017-05-12 2017-03-31 13F ISHARES TR RUS 1000 ETF Call 350,000 45,938 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2016-02-12 2015-12-31 13F ISHARES TR RUS 1000 ETF Put 0 -100.00 0 -100.00 n/a n/a n/a
2015-11-13 2015-09-30 13F ISHARES TR RUS 1000 ETF Put 4,100 439 n/a n/a n/a
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.