Biogen Idec shares owned by Mackenzie Financial
Quarter-by-quarter ownership of Biogen Idec (BIIB) shares owned by Mackenzie Financial
from 13F filings
Historical chart of Mackenzie Financial investment in Biogen Idec
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Quarterly reported holdings in Biogen Idec by Mackenzie Financial
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2025-09-30 | $8.9M | 64k | 140.08 |
| 2025-06-30 | $10M | 82k | 125.59 |
| 2025-03-31 | $6.4M | 47k | 136.84 |
| 2024-12-31 | $5.0M | 34k | 147.01 |
| 2024-09-30 | $2.7M | 14k | 193.84 |
| 2024-06-30 | $5.9M | 26k | 231.82 |
| 2024-03-31 | $10M | 47k | 215.63 |
| 2023-12-31 | $16M | 61k | 258.77 |
| 2023-09-30 | $12M | 47k | 251.31 |
| 2023-06-30 | $12M | 43k | 285.44 |
| 2023-03-31 | $13M | 46k | 278.03 |
| 2022-12-31 | $13M | 46k | 276.92 |
| 2022-09-30 | $14M | 54k | 267.00 |
| 2022-06-30 | $13M | 65k | 203.94 |
| 2022-03-31 | $9.4M | 45k | 210.59 |
| 2021-12-31 | $11M | 45k | 239.93 |
| 2021-09-30 | $11M | 40k | 282.99 |
| 2021-06-30 | $16M | 46k | 346.27 |
| 2021-03-31 | $13M | 48k | 279.74 |
| 2020-12-31 | $19M | 78k | 244.86 |
| 2020-09-30 | $22M | 76k | 283.68 |
| 2020-06-30 | $22M | 80k | 267.55 |
| 2020-03-31 | $6.3M | 20k | 316.40 |
| 2019-12-31 | $7.7M | 26k | 296.73 |
| 2019-09-30 | $7.1M | 30k | 232.84 |
| 2019-06-30 | $7.0M | 30k | 233.87 |
| 2019-03-31 | $8.9M | 38k | 236.38 |
| 2018-12-31 | $120M | 399k | 300.92 |
| 2018-09-30 | $117M | 330k | 353.31 |
| 2018-06-30 | $10M | 35k | 290.25 |
| 2018-03-31 | $9.3M | 34k | 273.83 |
| 2017-12-31 | $21M | 65k | 318.57 |
| 2016-06-30 | $2.1M | 8.6k | 241.78 |
| 2016-03-31 | $2.4M | 9.2k | 260.31 |
| 2015-12-31 | $2.3M | 7.4k | 306.37 |
| 2015-09-30 | $2.8M | 9.6k | 291.76 |
| 2015-06-30 | $13M | 32k | 403.94 |
| 2015-03-31 | $19M | 46k | 422.24 |
| 2014-12-31 | $18M | 53k | 339.45 |
| 2014-09-30 | $26M | 78k | 330.81 |
| 2014-06-30 | $33M | 104k | 315.31 |
| 2014-03-31 | $34M | 111k | 305.87 |
| 2013-12-31 | $28M | 101k | 279.57 |
| 2013-09-30 | $23M | 93k | 240.76 |
| 2013-06-30 | $19M | 89k | 215.20 |