iShares Russell 1000 Index shares owned by William Blair $ Company
Quarter-by-quarter ownership of iShares Russell 1000 Index (IWB) shares owned by William Blair $ Company
from 13F filings
Historical chart of William Blair $ Company investment in iShares Russell 1000 Index
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Quarterly reported holdings in iShares Russell 1000 Index by William Blair $ Company
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $28M | 77k | 365.48 |
| 2025-06-30 | $26M | 76k | 339.57 |
| 2025-03-31 | $24M | 77k | 306.74 |
| 2024-12-31 | $26M | 81k | 322.16 |
| 2024-09-30 | $26M | 82k | 314.39 |
| 2024-06-30 | $24M | 82k | 297.54 |
| 2024-03-31 | $23M | 81k | 288.03 |
| 2023-12-31 | $26M | 97k | 262.26 |
| 2023-09-30 | $24M | 101k | 234.91 |
| 2023-06-30 | $25M | 102k | 243.74 |
| 2023-03-31 | $23M | 103k | 225.23 |
| 2022-12-31 | $21M | 102k | 210.52 |
| 2022-09-30 | $19M | 99k | 197.33 |
| 2022-06-30 | $22M | 108k | 207.76 |
| 2022-03-31 | $27M | 107k | 250.07 |
| 2021-12-31 | $28M | 105k | 264.43 |
| 2021-09-30 | $26M | 109k | 241.71 |
| 2021-06-30 | $27M | 111k | 242.08 |
| 2021-03-31 | $23M | 105k | 223.83 |
| 2020-12-31 | $23M | 110k | 211.84 |
| 2020-09-30 | $21M | 110k | 187.15 |
| 2020-06-30 | $19M | 109k | 171.68 |
| 2020-03-31 | $14M | 102k | 141.53 |
| 2019-12-31 | $16M | 89k | 178.42 |
| 2019-09-30 | $10M | 62k | 164.54 |
| 2019-06-30 | $7.1M | 43k | 162.80 |
| 2019-03-31 | $7.1M | 46k | 157.31 |
| 2018-12-31 | $6.3M | 46k | 138.69 |
| 2018-09-30 | $7.5M | 46k | 161.71 |
| 2018-06-30 | $5.0M | 33k | 151.97 |
| 2018-03-31 | $4.9M | 34k | 146.86 |
| 2017-12-31 | $4.9M | 33k | 148.61 |
| 2017-09-30 | $4.4M | 32k | 139.87 |
| 2017-06-30 | $4.1M | 31k | 135.27 |
| 2017-03-31 | $4.1M | 31k | 131.48 |
| 2016-12-31 | $1.9M | 16k | 124.46 |
| 2016-09-30 | $1.8M | 15k | 120.45 |
| 2016-06-30 | $1.6M | 14k | 116.88 |
| 2016-03-31 | $430k | 3.8k | 113.94 |
| 2015-12-31 | $265k | 2.3k | 113.05 |
| 2015-09-30 | $250k | 2.3k | 106.66 |
| 2015-06-30 | $290k | 2.5k | 116.00 |
| 2015-03-31 | $319k | 2.8k | 115.79 |
| 2014-12-31 | $547k | 4.8k | 114.68 |
| 2014-09-30 | $563k | 5.1k | 109.85 |
| 2014-06-30 | $686k | 6.2k | 110.06 |
| 2014-03-31 | $648k | 6.2k | 104.72 |
| 2013-12-31 | $681k | 6.6k | 103.12 |
| 2013-09-30 | $684k | 7.3k | 94.16 |
| 2013-06-30 | $584k | 6.5k | 89.93 |
| 2013-03-31 | $570k | 6.5k | 87.16 |
| 2012-12-31 | $482k | 6.1k | 78.95 |
| 2012-09-30 | $534k | 6.7k | 79.35 |
| 2012-06-30 | $500k | 6.7k | 75.13 |
| 2011-12-31 | $457k | 6.6k | 69.24 |
| 2011-09-30 | $419k | 6.7k | 62.54 |
| 2011-03-31 | $509k | 6.9k | 73.77 |
| 2010-12-31 | $447k | 6.4k | 69.84 |