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
Q1 | $2.05M | Buy |
+11,200
| New | +$2.06M | 0.04% | 474 |
|
|
2025
Q4 | – | Sell |
-1,200
| Closed | -$168K | – | 1399 |
|
|
2025
Q3 | $168K | Sell |
1,200
-5,400
| -82% | -$730K | ﹤0.01% | 1350 |
|
|
2025
Q2 | $829K | Sell |
6,600
-7,400
| -53% | -$922K | ﹤0.01% | 1385 |
|
|
2025
Q1 | $1.92M | Buy |
+14,000
| New | +$2M | ﹤0.01% | 1151 |
|
|
2024
Q1 | – | Sell |
-11,000
| Closed | -$2.85M | – | 1276 |
|
|
2023
Q4 | $2.85M | Buy |
+11,000
| New | +$2.7M | 0.01% | 988 |
|
|
2023
Q3 | – | Sell |
-25,500
| Closed | -$7.26M | – | 1232 |
|
|
2023
Q2 | $7.26M | Sell |
25,500
-50,000
| -66% | -$14.9M | 0.01% | 676 |
|
|
2023
Q1 | $21M | Buy |
+75,500
| New | +$20.9M | 0.04% | 387 |
|
|
2022
Q3 | – | Sell |
-11,300
| Closed | -$2.31M | – | 1320 |
|
|
2022
Q2 | $2.31M | Buy |
+11,300
| New | +$2.31M | ﹤0.01% | 1054 |
|
|
2022
Q1 | – | Sell |
-26,600
| Closed | -$6.38M | – | 1625 |
|
|
2021
Q4 | $6.38M | Buy |
26,600
+11,600
| +77% | +$2.98M | 0.01% | 767 |
|
|
2021
Q3 | $4.25M | Buy |
+15,000
| New | +$4.92M | 0.01% | 826 |
|
|
2021
Q2 | – | Sell |
-2,900
| Closed | -$811K | – | 1338 |
|
|
2021
Q1 | $811K | Sell |
2,900
-1,900
| -40% | -$512K | ﹤0.01% | 1003 |
|
|
2020
Q4 | $1.18M | Sell |
4,800
-400
| -8% | -$103K | ﹤0.01% | 947 |
|
|
2020
Q3 | $1.48M | Buy |
+5,200
| New | +$1.45M | 0.01% | 822 |
|
|
2020
Q2 | – | Sell |
-14,000
| Closed | -$4.43M | – | 1460 |
|
|
2020
Q1 | $4.43M | Sell |
14,000
-60,400
| -81% | -$18.3M | 0.02% | 521 |
|
|
2019
Q4 | $22.1M | Sell |
74,400
-1,100
| -1% | -$305K | 0.08% | 205 |
|
|
2019
Q3 | $17.6M | Buy |
75,500
+38,700
| +105% | +$9.01M | 0.07% | 205 |
|
|
2019
Q2 | $8.61M | Buy |
36,800
+1,100
| +3% | +$254K | 0.04% | 333 |
|
|
2019
Q1 | $8.44M | Buy |
35,700
+25,400
| +247% | +$8M | 0.04% | 333 |
|
|
2018
Q4 | $3.1M | Hold |
10,300
| – | – | 0.02% | 616 |
|
|
2018
Q3 | $3.64M | Buy |
+10,300
| New | +$3.55M | 0.02% | 464 |
|
|
2018
Q1 | – | Sell |
-21,600
| Closed | -$6.88M | – | 1109 |
|
|
2017
Q4 | $6.88M | Hold |
21,600
| – | – | 0.05% | 325 |
|
|
2017
Q3 | $6.76M | Buy |
+21,600
| New | +$6.4M | 0.05% | 306 |
|
|
2017
Q1 | – | Sell |
-90,100
| Closed | -$25.6M | – | 1016 |
|
|
2016
Q4 | $25.6M | Buy |
90,100
+29,200
| +48% | +$8.66M | 0.25% | 88 |
|
|
2016
Q3 | $19.1M | Buy |
60,900
+55,000
| +932% | +$16.3M | 0.24% | 80 |
|
|
2016
Q2 | $1.43M | Buy |
5,900
+3,900
| +195% | +$1.03M | 0.02% | 560 |
|
|
2016
Q1 | $521K | Sell |
2,000
-15,700
| -89% | -$4.15M | 0.01% | 799 |
|
|
2015
Q4 | $5.42M | Buy |
17,700
+6,800
| +62% | +$1.95M | 0.11% | 188 |
|
|
2015
Q3 | $3.18M | Sell |
10,900
-6,300
| -37% | -$2.08M | 0.08% | 228 |
|
|
2015
Q2 | $6.95M | Buy |
17,200
+12,700
| +282% | +$5.1M | 0.17% | 115 |
|
|
2015
Q1 | $1.9M | Sell |
4,500
-22,600
| -83% | -$8.91M | 0.05% | 397 |
|
|
2014
Q4 | $9.2M | Buy |
27,100
+3,400
| +14% | +$1.1M | 0.26% | 64 |
|
|
2014
Q3 | $7.84M | Buy |
23,700
+4,600
| +24% | +$1.52M | 0.21% | 87 |
|
|
2014
Q2 | $6.02M | Sell |
19,100
-4,700
| -20% | -$1.41M | 0.14% | 155 |
|
|
2014
Q1 | $7.28M | Buy |
23,800
+12,900
| +118% | +$4.09M | 0.15% | 156 |
|
|
2013
Q4 | $3.05M | Sell |
10,900
-13,400
| -55% | -$3.47M | 0.07% | 296 |
|
|
2013
Q3 | $5.85M | Sell |
24,300
-10,800
| -31% | -$2.42M | 0.2% | 87 |
|
|
2013
Q2 | $7.55M | Buy |
+35,100
| New | +$7.5M | 0.29% | 39 |
|
Other funds holding BIIB
VCM
VPM
Twin Tree Management's BIIB Position: Q1 2026 in Review
Twin Tree Management reduced its Biogen (BIIB) stake by 94% in Q1 2026, selling an estimated $2.12M and leaving 759 shares worth $139K. The position accounts for ﹤0.01% of the portfolio, ranked #1132.
Twin Tree Management first reported a position in BIIB in Q2 2013 and has held it in 36 quarters since. The position peaked at $30.4M in Q3 2022. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.
- Twin Tree Management held 759 shares of Biogen worth $139K as of Q1 2026.
- Twin Tree Management sold 11,511 Biogen shares in Q1 2026, an estimated $2.12M.
- Biogen made up ﹤0.01% of Twin Tree Management's portfolio in Q1 2026, its #1132 holding.
- Twin Tree Management first reported a position in Biogen in Q2 2013 and has held it in 36 quarters since.
- Twin Tree Management's Biogen position peaked at $30.4M in Q3 2022.
- 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.
Based on Twin Tree Management's 13F filing for Q1 2026, filed 14 May 2026.