BlackRock shares owned by William Blair $ Company
Quarter-by-quarter ownership of BlackRock (BLK) shares owned by William Blair $ Company
from 13F filings
Historical chart of William Blair $ Company investment in BlackRock
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Quarterly reported holdings in BlackRock by William Blair $ Company
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2013-03-31 | $20M | 79k | 256.88 |
| 2012-12-31 | $15M | 73k | 206.70 |
| 2012-09-30 | $490k | 2.7k | 178.31 |
| 2012-06-30 | $414k | 2.4k | 169.60 |
| 2011-12-31 | $695k | 3.9k | 178.21 |
| 2011-09-30 | $529k | 3.6k | 147.89 |