Parallel 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
Q1
$801K Buy
4,367
+65
+2% +$12K 0.01% 557
2025
Q4
$757K Buy
4,302
+79
+2% +$12.9K 0.01% 540
2025
Q3
$592K Sell
4,223
-131
-3% -$17.7K 0.01% 600
2025
Q2
$547K Buy
4,354
+2,744
+170% +$342K 0.01% 594
2025
Q1
$220K Buy
1,610
+290
+22% +$41.5K 0.01% 917
2024
Q4
$202K Sell
1,320
-225
-15% -$38K ﹤0.01% 929
2024
Q3
$299K Sell
1,545
-437
-22% -$91.4K 0.01% 758
2024
Q2
$459K Buy
1,982
+156
+9% +$33.9K 0.01% 564
2024
Q1
$394K Sell
1,826
-75
-4% -$17.6K 0.01% 603
2023
Q4
$492K Sell
1,901
-33
-2% -$8.11K 0.01% 491
2023
Q3
$497K Sell
1,934
-99
-5% -$26.5K 0.02% 463
2023
Q2
$579K Buy
2,033
+42
+2% +$12.5K 0.02% 432
2023
Q1
$554K Sell
1,991
-57
-3% -$15.8K 0.02% 441
2022
Q4
$567K Buy
2,048
+291
+17% +$82.2K 0.02% 375
2022
Q3
$469K Sell
1,757
-16
-0.9% -$3.4K 0.02% 402
2022
Q2
$362K Sell
1,773
-79
-4% -$16.1K 0.02% 489
2022
Q1
$391K Sell
1,852
-148
-7% -$32.2K 0.02% 495
2021
Q4
$480K Sell
2,000
-192
-9% -$49.4K 0.02% 450
2021
Q3
$620K Buy
2,192
+22
+1% +$7.21K 0.03% 352
2021
Q2
$751K Buy
2,170
+197
+10% +$59.7K 0.03% 302
2021
Q1
$552K Sell
1,973
-18
-0.9% -$4.85K 0.03% 328
2020
Q4
$488K Buy
1,991
+148
+8% +$38.2K 0.03% 336
2020
Q3
$523K Buy
1,843
+57
+3% +$15.9K 0.03% 296
2020
Q2
$477K Sell
1,786
-725
-29% -$218K 0.03% 306
2020
Q1
$794K Buy
2,511
+830
+49% +$252K 0.06% 178
2019
Q4
$499K Sell
1,681
-235
-12% -$65.2K 0.04% 290
2019
Q3
$446K Buy
1,916
+750
+64% +$175K 0.04% 288
2019
Q2
$273K Sell
1,166
-209
-15% -$48.3K 0.03% 366
2019
Q1
$325K Sell
1,375
-101
-7% -$31.8K 0.04% 297
2018
Q4
$443K Buy
1,476
+80
+6% +$25.5K 0.06% 210
2018
Q3
$492K Buy
1,396
+47
+3% +$16.2K 0.06% 208
2018
Q2
$391K Buy
1,349
+220
+19% +$61.9K 0.06% 217
2018
Q1
$309K Buy
1,129
+76
+7% +$23.6K 0.05% 246
2017
Q4
$335K Buy
1,053
+44
+4% +$14.1K 0.05% 234
2017
Q3
$319K Buy
1,009
+1
+0.1% +$296 0.05% 236
2017
Q2
$292K Sell
1,008
-110
-10% -$29.1K 0.06% 251
2017
Q1
$303K Sell
1,118
-79
-7% -$22.3K 0.06% 225
2016
Q4
$339K Buy
+1,197
New +$355K 0.08% 177

Other funds holding BIIB

Parallel Advisors's BIIB Position: Q1 2026 in Review

Parallel Advisors increased its Biogen (BIIB) stake by 1.5% in Q1 2026, buying an estimated $12K and bringing the position to 4,367 shares worth $801K. The position accounts for 0.01% of the portfolio, ranked #557.

Parallel Advisors first reported a position in BIIB in Q4 2016 and has held it in 38 quarters since. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Parallel Advisors held 4,367 shares of Biogen worth $801K as of Q1 2026.
  • Parallel Advisors bought 65 Biogen shares in Q1 2026, an estimated $12K.
  • Biogen made up 0.01% of Parallel Advisors's portfolio in Q1 2026, its #557 holding.
  • Parallel Advisors first reported a position in Biogen in Q4 2016 and has held it in 38 quarters since.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Parallel Advisors's 13F filing for Q1 2026, filed 7 May 2026.