iShares Russell 1000 Growth Index shares owned by William Blair Investment Management
Quarter-by-quarter ownership of iShares Russell 1000 Growth Index (IWF) shares owned by William Blair Investment Management
from 13F filings
Historical chart of William Blair Investment Management investment in iShares Russell 1000 Growth Index
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Quarterly reported holdings in iShares Russell 1000 Growth Index by William Blair Investment Management
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $79M | 169k | 468.41 |
| 2025-03-31 | $15M | 41k | 361.09 |
| 2024-06-30 | $27M | 75k | 364.51 |
| 2023-12-31 | $42k | 139 | 303.17 |
| 2022-12-31 | $164k | 765 | 214.24 |
| 2022-09-30 | $35k | 165 | 212.12 |
| 2022-06-30 | $0 | 196 | 0.00 |
| 2022-03-31 | $0 | 617 | 0.00 |
| 2021-09-30 | $4.0M | 15k | 274.07 |
| 2020-12-31 | $20k | 83 | 240.96 |
| 2019-12-31 | $0 | 215 | 0.00 |
| 2019-06-30 | $115k | 730 | 157.53 |
| 2018-12-31 | $183k | 1.4k | 131.18 |
| 2018-03-31 | $77M | 562k | 136.09 |
| 2017-12-31 | $78M | 580k | 134.68 |
| 2017-09-30 | $77M | 616k | 125.06 |
| 2017-06-30 | $79M | 660k | 119.02 |
| 2017-03-31 | $79M | 694k | 113.80 |
| 2016-12-31 | $81M | 769k | 104.90 |
| 2016-09-30 | $44M | 419k | 104.17 |
| 2016-06-30 | $45M | 445k | 100.36 |
| 2016-03-31 | $46M | 458k | 99.78 |
| 2015-12-31 | $44M | 438k | 99.48 |
| 2015-09-30 | $39M | 418k | 93.00 |
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