Private Advisor Group’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
$852K Sell
4,649
-1,464
-24% -$270K ﹤0.01% 1527
2025
Q4
$1.08M Buy
6,113
+1,646
+37% +$269K 0.01% 1369
2025
Q3
$626K Buy
4,467
+229
+5% +$31K ﹤0.01% 1650
2025
Q2
$532K Sell
4,238
-318
-7% -$39.6K ﹤0.01% 1651
2025
Q1
$623K Sell
4,556
-1,341
-23% -$192K ﹤0.01% 1494
2024
Q4
$902K Sell
5,897
-3,748
-39% -$632K 0.01% 1276
2024
Q3
$1.87M Buy
9,645
+924
+11% +$193K 0.01% 924
2024
Q2
$2.02M Buy
8,721
+3,888
+80% +$845K 0.01% 834
2024
Q1
$1.04M Buy
4,833
+224
+5% +$52.5K 0.01% 1142
2023
Q4
$1.19M Sell
4,609
-20
-0.4% -$4.91K 0.01% 1029
2023
Q3
$1.19M Buy
4,629
+97
+2% +$25.9K 0.01% 950
2023
Q2
$1.26M Buy
4,532
+11
+0.2% +$3.27K 0.01% 932
2023
Q1
$1.26M Sell
4,521
-1,524
-25% -$422K 0.01% 888
2022
Q4
$751K Buy
6,045
+1,787
+42% +$505K 0.04% 442
2022
Q3
$1.14M Sell
4,258
-2,238
-34% -$475K 0.01% 862
2022
Q2
$1.32M Buy
6,496
+789
+14% +$161K 0.01% 939
2022
Q1
$1.2M Sell
5,707
-440
-7% -$95.7K 0.01% 1011
2021
Q4
$1.48M Sell
6,147
-36,314
-86% -$9.34M 0.01% 940
2021
Q3
$12M Buy
42,461
+34,676
+445% +$11.4M 0.08% 256
2021
Q2
$2.7M Buy
7,785
+104
+1% +$31.5K 0.02% 647
2021
Q1
$2.15M Buy
7,681
+1,364
+22% +$368K 0.02% 688
2020
Q4
$1.55M Sell
6,317
-291
-4% -$75.1K 0.02% 748
2020
Q3
$1.83M Sell
6,608
-717
-10% -$200K 0.02% 585
2020
Q2
$1.96M Buy
7,325
+1,020
+16% +$307K 0.03% 546
2020
Q1
$2M Buy
6,305
+372
+6% +$113K 0.04% 444
2019
Q4
$1.76M Sell
5,933
-4,234
-42% -$1.17M 0.03% 579
2019
Q3
$2.64M Buy
10,167
+4,908
+93% +$1.14M 0.04% 456
2019
Q2
$1.23M Buy
5,259
+153
+3% +$35.3K 0.02% 647
2019
Q1
$1.21M Buy
5,106
+103
+2% +$32.4K 0.02% 578
2018
Q4
$1.5M Sell
5,003
-2,233
-31% -$713K 0.04% 465
2018
Q3
$2.56M Sell
7,236
-15,190
-68% -$5.23M 0.05% 354
2018
Q2
$6.53M Buy
22,426
+20,093
+861% +$5.65M 0.11% 91
2018
Q1
$642K Sell
2,333
-2,783
-54% -$864K 0.03% 569
2017
Q4
$1.68M Sell
5,116
-1,711
-25% -$549K 0.07% 282
2017
Q3
$2.23M Buy
6,827
+1,368
+25% +$405K 0.06% 333
2017
Q2
$1.49M Sell
5,459
-570
-9% -$151K 0.04% 430
2017
Q1
$1.63M Buy
6,029
+220
+4% +$62.2K 0.05% 400
2016
Q4
$1.67M Buy
5,809
+539
+10% +$160K 0.05% 347
2016
Q3
$1.64M Sell
5,270
-132
-2% -$39.1K 0.07% 292
2016
Q2
$1.34M Buy
5,402
+1,562
+41% +$412K 0.05% 334
2016
Q1
$802K Buy
3,840
+569
+17% +$150K 0.04% 431
2015
Q4
$1M Buy
3,271
+603
+23% +$173K 0.05% 390
2015
Q3
$779K Buy
2,668
+173
+7% +$57.1K 0.04% 420
2015
Q2
$1.01M Buy
2,495
+143
+6% +$57.4K 0.05% 377
2015
Q1
$993K Buy
2,352
+85
+4% +$33.5K 0.06% 351
2014
Q4
$770K Buy
2,267
+552
+32% +$179K 0.05% 411
2014
Q3
$567K Buy
1,715
+396
+30% +$131K 0.04% 474
2014
Q2
$416K Buy
1,319
+69
+6% +$20.8K 0.04% 550
2014
Q1
$382K Buy
1,250
+326
+35% +$103K 0.04% 496
2013
Q4
$258K Buy
+924
New +$239K 0.03% 565

Other funds holding BIIB

Private Advisor Group's BIIB Position: Q1 2026 in Review

Private Advisor Group reduced its Biogen (BIIB) stake by 24% in Q1 2026, selling an estimated $270K and leaving 4,649 shares worth $852K. The position accounts for ﹤0.01% of the portfolio, ranked #1527.

Private Advisor Group first reported a position in BIIB in Q4 2013 and has held it in 50 quarters since. The position peaked at $12M in Q3 2021. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Private Advisor Group held 4,649 shares of Biogen worth $852K as of Q1 2026.
  • Private Advisor Group sold 1,464 Biogen shares in Q1 2026, an estimated $270K.
  • Biogen made up ﹤0.01% of Private Advisor Group's portfolio in Q1 2026, its #1527 holding.
  • Private Advisor Group first reported a position in Biogen in Q4 2013 and has held it in 50 quarters since.
  • Private Advisor Group's Biogen position peaked at $12M in Q3 2021.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Private Advisor Group's 13F filing for Q1 2026, filed 27 Apr 2026.