Twin Tree Management’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 | $1.19M | Buy |
5,507
+4,748
| +626% | +$908K | 0.02% | 771 |
|
|
2026
Q1 | $139K | Sell |
759
-11,511
| -94% | -$2.12M | ﹤0.01% | 1132 |
|
|
2025
Q4 | $2.16M | Buy |
+12,270
| New | +$2M | 0.02% | 802 |
|
|
2024
Q4 | – | Sell |
-4,296
| Closed | -$725K | – | 1575 |
|
|
2024
Q3 | $833K | Buy |
4,296
+2,559
| +147% | +$535K | ﹤0.01% | 1249 |
|
|
2024
Q2 | $403K | Buy |
+1,737
| New | +$377K | ﹤0.01% | 1130 |
|
|
2023
Q3 | – | Sell |
-29,552
| Closed | -$8.42M | – | 1233 |
|
|
2023
Q2 | $8.42M | Buy |
29,552
+9,913
| +50% | +$2.95M | 0.01% | 646 |
|
|
2023
Q1 | $5.46M | Sell |
19,639
-28,557
| -59% | -$7.9M | 0.01% | 720 |
|
|
2022
Q4 | $13.3M | Sell |
48,196
-65,616
| -58% | -$18.5M | 0.03% | 494 |
|
|
2022
Q3 | $30.4M | Buy |
113,812
+17,208
| +18% | +$3.65M | 0.06% | 282 |
|
|
2022
Q2 | $19.7M | Buy |
96,604
+37,607
| +64% | +$7.69M | 0.03% | 422 |
|
|
2022
Q1 | $12.4M | Buy |
+58,997
| New | +$12.8M | 0.02% | 638 |
|
|
2021
Q3 | – | Sell |
-12,777
| Closed | -$4.19M | – | 1562 |
|
|
2021
Q2 | $4.42M | Sell |
12,777
-86,648
| -87% | -$26.2M | 0.01% | 717 |
|
|
2021
Q1 | $27.8M | Buy |
99,425
+47,309
| +91% | +$12.8M | 0.1% | 210 |
|
|
2020
Q4 | $12.8M | Sell |
52,116
-18,162
| -26% | -$4.69M | 0.05% | 390 |
|
|
2020
Q3 | $19.9M | Buy |
70,278
+19,261
| +38% | +$5.37M | 0.08% | 268 |
|
|
2020
Q2 | $13.7M | Buy |
51,017
+27,831
| +120% | +$8.37M | 0.06% | 379 |
|
|
2020
Q1 | $7.34M | Sell |
23,186
-29,137
| -56% | -$8.84M | 0.04% | 398 |
|
|
2019
Q4 | $15.5M | Buy |
52,323
+29,416
| +128% | +$8.16M | 0.05% | 266 |
|
|
2019
Q3 | $5.33M | Sell |
22,907
-2,381
| -9% | -$554K | 0.02% | 464 |
|
|
2019
Q2 | $5.91M | Sell |
25,288
-8,214
| -25% | -$1.9M | 0.03% | 415 |
|
|
2019
Q1 | $7.92M | Sell |
33,502
-664
| -2% | -$209K | 0.04% | 352 |
|
|
2018
Q4 | $10.3M | Buy |
34,166
+33,464
| +4,767% | +$10.7M | 0.06% | 309 |
|
|
2018
Q3 | $248K | Sell |
702
-24,944
| -97% | -$8.59M | ﹤0.01% | 906 |
|
|
2018
Q2 | $7.44M | Sell |
25,646
-16,563
| -39% | -$4.66M | 0.05% | 329 |
|
|
2018
Q1 | $11.6M | Buy |
42,209
+35,057
| +490% | +$10.9M | 0.09% | 184 |
|
|
2017
Q4 | $2.28M | Buy |
+7,152
| New | +$2.29M | 0.02% | 572 |
|
|
2017
Q3 | – | Sell |
-40,056
| Closed | -$11.9M | – | 976 |
|
|
2017
Q2 | $10.9M | Buy |
+40,056
| New | +$10.6M | 0.09% | 225 |
|
|
2016
Q4 | – | Sell |
-4,456
| Closed | -$1.32M | – | 1166 |
|
|
2016
Q3 | $1.4M | Sell |
4,456
-4,852
| -52% | -$1.44M | 0.02% | 584 |
|
|
2016
Q2 | $2.25M | Buy |
9,308
+1,058
| +13% | +$279K | 0.04% | 457 |
|
|
2016
Q1 | $2.15M | Buy |
8,250
+4,660
| +130% | +$1.23M | 0.04% | 404 |
|
|
2015
Q4 | $1.1M | Sell |
3,590
-6,417
| -64% | -$1.84M | 0.02% | 622 |
|
|
2015
Q3 | $2.92M | Buy |
+10,007
| New | +$3.3M | 0.07% | 253 |
|
|
2015
Q2 | – | Sell |
-4,077
| Closed | -$1.64M | – | 1319 |
|
|
2015
Q1 | $1.72M | Buy |
+4,077
| New | +$1.61M | 0.04% | 433 |
|
|
2014
Q4 | – | Sell |
-1,862
| Closed | -$602K | – | 1081 |
|
|
2014
Q3 | $616K | Buy |
+1,862
| New | +$614K | 0.02% | 663 |
|
|
2014
Q2 | – | Sell |
-2,195
| Closed | -$661K | – | 900 |
|
|
2014
Q1 | $671K | Sell |
2,195
-3,218
| -59% | -$1.02M | 0.01% | 700 |
|
|
2013
Q4 | $1.51M | Buy |
+5,413
| New | +$1.4M | 0.04% | 489 |
|
|
2013
Q3 | – | Sell |
-2,534
| Closed | -$567K | – | 816 |
|
|
2013
Q2 | $545K | Buy |
+2,534
| New | +$541K | 0.02% | 583 |
|
Other funds holding BIIB
Twin Tree Management's BIIB Position: Q2 2026 in Review
Twin Tree Management increased its Biogen (BIIB) stake by 626% in Q2 2026, buying an estimated $908K and bringing the position to 5,507 shares worth $1.19M. The position accounts for 0.02% of the portfolio, ranked #771.
Twin Tree Management first reported a position in BIIB in Q2 2013 and has held it in 37 quarters since. The position peaked at $30.4M in Q3 2022. 1,038 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.
- Twin Tree Management held 5,507 shares of Biogen worth $1.19M as of Q2 2026.
- Twin Tree Management bought 4,748 Biogen shares in Q2 2026, an estimated $908K.
- Biogen made up 0.02% of Twin Tree Management's portfolio in Q2 2026, its #771 holding.
- Twin Tree Management first reported a position in Biogen in Q2 2013 and has held it in 37 quarters since.
- Twin Tree Management's Biogen position peaked at $30.4M in Q3 2022.
- 1,038 funds tracked by Wall St. Rank held Biogen as of Q2 2026.
Based on Twin Tree Management's 13F filing for Q2 2026, filed 12 Aug 2026.