Cambridge Investment Research Advisors’s Biogen BIIB Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q2
$1.75M Buy
8,104
+4,991
+160% +$955K ﹤0.01% 1793
2026
Q1
$571K Sell
3,113
-4,706
-60% -$867K ﹤0.01% 2669
2025
Q4
$1.38M Buy
7,819
+3,478
+80% +$568K ﹤0.01% 1848
2025
Q3
$608K Buy
4,341
+909
+26% +$123K ﹤0.01% 2486
2025
Q2
$431K Sell
3,432
-396
-10% -$49.3K ﹤0.01% 2674
2025
Q1
$524K Buy
3,828
+389
+11% +$55.6K ﹤0.01% 2396
2024
Q4
$526K Buy
3,439
+232
+7% +$39.1K ﹤0.01% 2386
2024
Q3
$622K Sell
3,207
-172
-5% -$36K ﹤0.01% 2234
2024
Q2
$783K Sell
3,379
-390
-10% -$84.8K ﹤0.01% 1943
2024
Q1
$813K Sell
3,769
-1,708
-31% -$400K ﹤0.01% 1871
2023
Q4
$1.42M Sell
5,477
-282
-5% -$69.3K 0.01% 1425
2023
Q3
$1.48M Sell
5,759
-9,417
-62% -$2.52M 0.01% 1328
2023
Q2
$4.32M Buy
15,176
+4,612
+44% +$1.37M 0.02% 734
2023
Q1
$2.94M Buy
10,564
+5,078
+93% +$1.41M 0.01% 911
2022
Q4
$1.52M Sell
5,486
-356
-6% -$101K 0.01% 1249
2022
Q3
$1.56M Sell
5,842
-231
-4% -$49.1K 0.01% 1184
2022
Q2
$1.24M Buy
6,073
+282
+5% +$57.6K 0.01% 1324
2022
Q1
$1.22M Sell
5,791
-711
-11% -$155K 0.01% 1433
2021
Q4
$1.56M Sell
6,502
-650
-9% -$167K 0.01% 1291
2021
Q3
$2.02M Buy
7,152
+656
+10% +$215K 0.01% 1089
2021
Q2
$2.25M Sell
6,496
-402
-6% -$122K 0.01% 1044
2021
Q1
$1.93M Buy
6,898
+710
+11% +$191K 0.01% 1031
2020
Q4
$1.51M Sell
6,188
-1,085
-15% -$280K 0.01% 1074
2020
Q3
$2.06M Sell
7,273
-1,030
-12% -$287K 0.01% 791
2020
Q2
$2.22M Buy
8,303
+1,629
+24% +$490K 0.02% 724
2020
Q1
$2.11M Buy
6,674
+302
+5% +$91.6K 0.02% 644
2019
Q4
$1.89M Buy
6,372
+1,454
+30% +$403K 0.01% 821
2019
Q3
$1.15M Sell
4,918
-765
-13% -$178K 0.01% 997
2019
Q2
$1.33M Sell
5,683
-450
-7% -$104K 0.01% 898
2019
Q1
$1.45M Buy
6,133
+87
+1% +$27.4K 0.01% 853
2018
Q4
$1.82M Buy
6,046
+204
+3% +$65.1K 0.02% 671
2018
Q3
$2.06M Buy
5,842
+510
+10% +$176K 0.02% 676
2018
Q2
$1.55M Buy
5,332
+147
+3% +$41.3K 0.02% 755
2018
Q1
$1.42M Sell
5,185
-600
-10% -$186K 0.02% 766
2017
Q4
$1.84M Sell
5,785
-163
-3% -$52.3K 0.02% 619
2017
Q3
$1.86M Buy
5,948
+520
+10% +$154K 0.03% 561
2017
Q2
$1.47M Sell
5,428
-32
-0.6% -$8.46K 0.02% 633
2017
Q1
$1.49M Buy
5,460
+125
+2% +$35.3K 0.03% 560
2016
Q4
$1.51M Sell
5,335
-26
-0.5% -$7.71K 0.03% 519
2016
Q3
$1.68M Buy
5,361
+5
+0.1% +$1.48K 0.03% 480
2016
Q2
$1.29M Buy
5,356
+404
+8% +$106K 0.03% 496
2016
Q1
$1.29M Buy
4,952
+495
+11% +$131K 0.03% 476
2015
Q4
$1.36M Buy
4,457
+586
+15% +$168K 0.03% 456
2015
Q3
$1.13M Buy
3,871
+179
+5% +$59.1K 0.03% 445
2015
Q2
$1.49M Buy
3,692
+198
+6% +$79.5K 0.04% 383
2015
Q1
$1.48M Sell
3,494
-1,265
-27% -$499K 0.04% 375
2014
Q4
$1.61M Buy
4,759
+1,759
+59% +$569K 0.05% 340
2014
Q3
$992K Buy
3,000
+42
+1% +$13.8K 0.03% 527
2014
Q2
$933K Buy
2,958
+232
+9% +$69.8K 0.03% 479
2014
Q1
$834K Buy
2,726
+699
+34% +$222K 0.03% 486
2013
Q4
$567K Sell
2,027
-102
-5% -$26.4K 0.02% 602
2013
Q3
$513K Sell
2,129
-167
-7% -$37.4K 0.02% 617
2013
Q2
$494K Buy
+2,296
New +$491K 0.03% 554

Other funds holding BIIB

Cambridge Investment Research Advisors's BIIB Position: Q2 2026 in Review

Cambridge Investment Research Advisors increased its Biogen (BIIB) stake by 160% in Q2 2026, buying an estimated $955K and bringing the position to 8,104 shares worth $1.75M. The position accounts for ﹤0.01% of the portfolio, ranked #1793.

Cambridge Investment Research Advisors first reported a position in BIIB in Q2 2013 and has held it in 53 quarters since. The position peaked at $4.32M in Q2 2023. 1,036 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Cambridge Investment Research Advisors held 8,104 shares of Biogen worth $1.75M as of Q2 2026.
  • Cambridge Investment Research Advisors bought 4,991 Biogen shares in Q2 2026, an estimated $955K.
  • Biogen made up ﹤0.01% of Cambridge Investment Research Advisors's portfolio in Q2 2026, its #1793 holding.
  • Cambridge Investment Research Advisors first reported a position in Biogen in Q2 2013 and has held it in 53 quarters since.
  • Cambridge Investment Research Advisors's Biogen position peaked at $4.32M in Q2 2023.
  • 1,036 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Cambridge Investment Research Advisors's 13F filing for Q2 2026, filed 27 Jul 2026.