Canada Pension Plan Investment Board’s Biogen BIIB Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$21.1M Sell
114,938
-23,140
-17% -$4.26M 0.01% 489
2025
Q4
$24.3M Sell
138,078
-101,302
-42% -$16.6M 0.02% 473
2025
Q3
$33.5M Sell
239,380
-15,803
-6% -$2.14M 0.02% 415
2025
Q2
$32M Buy
255,183
+24,379
+11% +$3.04M 0.03% 388
2025
Q1
$31.6M Sell
230,804
-30,358
-12% -$4.34M 0.03% 384
2024
Q4
$39.9M Buy
261,162
+56,132
+27% +$9.47M 0.04% 332
2024
Q3
$39.7M Buy
205,030
+31,366
+18% +$6.56M 0.04% 331
2024
Q2
$40.3M Buy
173,664
+64,505
+59% +$14M 0.04% 312
2024
Q1
$23.5M Buy
109,159
+3,233
+3% +$757K 0.02% 426
2023
Q4
$27.4M Sell
105,926
-139,284
-57% -$34.2M 0.03% 349
2023
Q3
$63M Buy
245,210
+92,400
+60% +$24.7M 0.09% 221
2023
Q2
$43.5M Sell
152,810
-16,000
-9% -$4.76M 0.07% 253
2023
Q1
$46.9M Buy
168,810
+11,415
+7% +$3.16M 0.07% 234
2022
Q4
$43.6M Sell
157,395
-62,860
-29% -$17.8M 0.08% 226
2022
Q3
$58.8M Buy
220,255
+123,400
+127% +$26.2M 0.1% 198
2022
Q2
$19.8M Sell
96,855
-23,600
-20% -$4.82M 0.03% 343
2022
Q1
$25.4M Sell
120,455
-121,674
-50% -$26.5M 0.03% 359
2021
Q4
$58.1M Sell
242,129
-26,686
-10% -$6.86M 0.06% 297
2021
Q3
$76.1M Buy
268,815
+27,525
+11% +$9.02M 0.09% 235
2021
Q2
$83.6M Sell
241,290
-3,484
-1% -$1.06M 0.1% 212
2021
Q1
$68.5M Buy
244,774
+229,464
+1,499% +$61.9M 0.09% 217
2020
Q4
$3.75M Sell
15,310
-26,923
-64% -$6.95M 0.01% 676
2020
Q3
$12M Sell
42,233
-23,924
-36% -$6.67M 0.02% 356
2020
Q2
$17.7M Sell
66,157
-11,875
-15% -$3.57M 0.04% 273
2020
Q1
$24.7M Sell
78,032
-67,848
-47% -$20.6M 0.06% 205
2019
Q4
$43.3M Sell
145,880
-311,580
-68% -$86.5M 0.09% 183
2019
Q3
$107M Buy
457,460
+57,570
+14% +$13.4M 0.22% 93
2019
Q2
$93.5M Sell
399,890
-3,560
-0.9% -$822K 0.19% 100
2019
Q1
$95.4M Buy
403,450
+58,314
+17% +$18.4M 0.18% 105
2018
Q4
$104M Sell
345,136
-159,782
-32% -$51M 0.23% 87
2018
Q3
$178M Buy
504,918
+335,481
+198% +$116M 0.33% 70
2018
Q2
$49.2M Sell
169,437
-341,694
-67% -$96.1M 0.09% 179
2018
Q1
$140M Buy
511,131
+258,600
+102% +$80.3M 0.24% 93
2017
Q4
$80.4M Sell
252,531
-111,700
-31% -$35.8M 0.15% 121
2017
Q3
$114M Buy
364,231
+7,500
+2% +$2.22M 0.23% 87
2017
Q2
$96.8M Buy
356,731
+119,000
+50% +$31.5M 0.22% 86
2017
Q1
$65M Buy
237,731
+53,500
+29% +$15.1M 0.17% 104
2016
Q4
$52.2M Buy
184,231
+113,131
+159% +$33.5M 0.19% 88
2016
Q3
$22.3M Sell
71,100
-8,587
-11% -$2.54M 0.08% 190
2016
Q2
$19.3M Buy
79,687
+47,800
+150% +$12.6M 0.08% 209
2016
Q1
$8.3M Sell
31,887
-9,400
-23% -$2.48M 0.03% 432
2015
Q4
$12.6M Sell
41,287
-4,300
-9% -$1.24M 0.06% 290
2015
Q3
$13.3M Sell
45,587
-60,800
-57% -$20.1M 0.05% 317
2015
Q2
$43M Buy
106,387
+15,900
+18% +$6.38M 0.14% 124
2015
Q1
$38.2M Sell
90,487
-117,406
-56% -$46.3M 0.14% 147
2014
Q4
$70.6M Buy
207,893
+88,195
+74% +$28.5M 0.23% 84
2014
Q3
$39.6M Buy
119,698
+4,262
+4% +$1.41M 0.14% 137
2014
Q2
$36.4M Sell
115,436
-32,362
-22% -$9.74M 0.13% 162
2014
Q1
$45.2M Buy
147,798
+68,450
+86% +$21.7M 0.18% 115
2013
Q4
$22.2M Buy
79,348
+16,263
+26% +$4.21M 0.09% 236
2013
Q3
$15.2M Buy
63,085
+19,460
+45% +$4.36M 0.07% 319
2013
Q2
$9.39M Buy
+43,625
New +$9.32M 0.05% 382

Other funds holding BIIB