Latest Period
Q1 2026
Security Snapshot
ISHARES TR - RUS 1000 ETF (IWB) Institutional Ownership
CUSIP: 464287622
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
1,457
Shares (Excl. Options)
97,764,955
Price
$356.56
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- Security type / class
- Equity / RUS 1000 ETF
- Symbol
- IWB
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 97,764,955
- Total 13F value
- $34,767,956,215
- Portfolio coverage rank
- 0.09%
- Share change
- -2,501,694
- Value change
- -$889,540,812
- Number of holders
- 1,457
- SEC-reported price per share
- $404.33
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
1 identity field
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- IWB - ISHARES TR - RUS 1000 ETF is tracked under CUSIP 464287622.
- 1457 institutions reported positions in Q1 2026.
- Schedule 13D/13G significant owner rows are not currently available.
Change
- Holder count moved from 1,490 to 1,457 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $37,737,373,804 to $34,767,956,215.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 1457 institutions filings for Q1 2026.
Security key
464287622
Latest holder period
Q1 2026
13F holders
1,457
13D/G owners
0
CIK / CUSIP context first
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 464287622:
As of 31 Mar 2026, 1,457 institutional investors reported holding 97,764,955 shares of ISHARES TR - RUS 1000 ETF (IWB).
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
49
Latest
Q1 2026
Rows shown
1-25 of 49
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 97,764,955 | $34,767,956,215 | -$889,540,812 | $356.56 | 1,457 |
| 2025 Q4 | 101,046,599 | $37,737,373,804 | +$594,086,253 | $373.44 | 1,490 |
| 2025 Q3 | 98,317,238 | $35,909,921,229 | +$827,570,173 | $365.48 | 1,411 |
| 2025 Q2 | 97,200,391 | $32,985,952,068 | -$67,176,732 | $339.57 | 1,380 |
| 2025 Q1 | 97,704,580 | $29,949,488,543 | -$636,687,873 | $306.74 | 1,333 |
| 2024 Q4 | 100,729,231 | $32,451,636,747 | +$1,445,624,249 | $322.16 | 1,352 |
| 2024 Q3 | 95,073,362 | $29,855,053,720 | -$377,953,717 | $314.39 | 1,261 |
| 2024 Q2 | 96,760,124 | $28,790,190,291 | -$498,571,001 | $297.54 | 1,249 |
| 2024 Q1 | 98,550,178 | $28,376,505,691 | +$35,855,672 | $288.03 | 1,214 |
| 2023 Q4 | 98,994,171 | $25,965,574,890 | +$59,924,280 | $262.26 | 1,211 |
| 2023 Q3 | 98,700,279 | $23,186,181,738 | -$317,018,750 | $234.91 | 1,091 |
| 2023 Q2 | 99,831,746 | $24,332,264,042 | -$101,441,714 | $243.74 | 1,096 |
| 2023 Q1 | 95,839,516 | $21,586,630,690 | -$1,001,098,264 | $225.23 | 1,057 |
| 2022 Q4 | 105,643,898 | $22,244,622,333 | +$1,295,878,376 | $210.52 | 1,066 |
| 2022 Q3 | 100,826,217 | $19,909,946,917 | +$363,948,975 | $197.33 | 997 |
| 2022 Q2 | 100,064,887 | $20,826,135,926 | +$1,002,904,233 | $207.76 | 1,007 |
| 2022 Q1 | 94,837,507 | $23,701,264,907 | -$586,609,691 | $250.07 | 1,040 |
| 2021 Q4 | 96,998,830 | $25,615,918,923 | +$756,422,328 | $264.43 | 1,053 |
| 2021 Q3 | 94,749,267 | $22,946,710,664 | +$880,923,255 | $241.71 | 931 |
| 2021 Q2 | 91,717,926 | $22,186,171,764 | +$290,716,534 | $242.08 | 917 |
| 2021 Q1 | 92,197,768 | $20,632,573,712 | -$114,871,201 | $223.83 | 914 |
| 2020 Q4 | 92,703,630 | $19,629,604,728 | -$254,271,952 | $211.84 | 902 |
| 2020 Q3 | 92,210,650 | $17,227,863,932 | -$416,022,358 | $187.15 | 815 |
| 2020 Q2 | 95,855,201 | $16,423,108,610 | -$23,348,465 | $171.68 | 795 |
| 2020 Q1 | 96,079,517 | $13,588,671,657 | +$79,209,371 | $141.53 | 768 |