Millennium 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 | $19M | Buy |
103,900
+57,200
| +122% | +$10.5M | 0.01% | 1597 |
|
|
2025
Q4 | $8.22M | Sell |
46,700
-214,300
| -82% | -$35M | ﹤0.01% | 2475 |
|
|
2025
Q3 | $36.6M | Buy |
261,000
+206,800
| +382% | +$28M | 0.02% | 1101 |
|
|
2025
Q2 | $6.81M | Sell |
54,200
-21,200
| -28% | -$2.64M | ﹤0.01% | 2657 |
|
|
2025
Q1 | $10.3M | Buy |
75,400
+48,100
| +176% | +$6.88M | 0.01% | 2158 |
|
|
2024
Q4 | $4.17M | Sell |
27,300
-18,200
| -40% | -$3.07M | ﹤0.01% | 2983 |
|
|
2024
Q3 | $8.82M | Buy |
45,500
+31,200
| +218% | +$6.53M | ﹤0.01% | 2298 |
|
|
2024
Q2 | $3.32M | Sell |
14,300
-25,200
| -64% | -$5.48M | ﹤0.01% | 3106 |
|
|
2024
Q1 | $8.52M | Hold |
39,500
| – | – | ﹤0.01% | 2343 |
|
|
2023
Q4 | $10.2M | Sell |
39,500
-34,200
| -46% | -$8.4M | ﹤0.01% | 2168 |
|
|
2023
Q3 | $18.9M | Sell |
73,700
-7,300
| -9% | -$1.95M | 0.01% | 1480 |
|
|
2023
Q2 | $23.1M | Buy |
81,000
+28,100
| +53% | +$8.36M | 0.01% | 1275 |
|
|
2023
Q1 | $14.7M | Sell |
52,900
-120,900
| -70% | -$33.5M | 0.01% | 1600 |
|
|
2022
Q4 | $48.1M | Buy |
173,800
+9,600
| +6% | +$2.71M | 0.03% | 773 |
|
|
2022
Q3 | $43.8M | Buy |
164,200
+5,500
| +3% | +$1.17M | 0.03% | 753 |
|
|
2022
Q2 | $32.4M | Sell |
158,700
-20,000
| -11% | -$4.09M | 0.02% | 904 |
|
|
2022
Q1 | $37.6M | Sell |
178,700
-105,000
| -37% | -$22.8M | 0.02% | 871 |
|
|
2021
Q4 | $68.1M | Sell |
283,700
-1,100
| -0.4% | -$283K | 0.03% | 554 |
|
|
2021
Q3 | $80.6M | Buy |
284,800
+22,000
| +8% | +$7.21M | 0.05% | 398 |
|
|
2021
Q2 | $91M | Buy |
262,800
+131,700
| +100% | +$39.9M | 0.06% | 346 |
|
|
2021
Q1 | $36.7M | Buy |
131,100
+44,200
| +51% | +$11.9M | 0.03% | 665 |
|
|
2020
Q4 | $21.3M | Buy |
86,900
+65,400
| +304% | +$16.9M | 0.02% | 1020 |
|
|
2020
Q3 | $6.1K | Sell |
21,500
-9,500
| -31% | -$2.65M | 0.01% | 1657 |
|
|
2020
Q2 | $8.29M | Buy |
31,000
+12,900
| +71% | +$3.88M | 0.01% | 1351 |
|
|
2020
Q1 | $5.73M | Buy |
18,100
+13,500
| +293% | +$4.1M | 0.01% | 1233 |
|
|
2019
Q4 | $1.36M | Hold |
4,600
| – | – | ﹤0.01% | 2841 |
|
|
2019
Q3 | $1.07M | Hold |
4,600
| – | – | ﹤0.01% | 2810 |
|
|
2019
Q2 | $1.08M | Hold |
4,600
| – | – | ﹤0.01% | 2764 |
|
|
2019
Q1 | $1.09M | Hold |
4,600
| – | – | ﹤0.01% | 2812 |
|
|
2018
Q4 | $1.38M | Hold |
4,600
| – | – | ﹤0.01% | 2420 |
|
|
2018
Q3 | $1.63M | Buy |
4,600
+3,800
| +475% | +$1.31M | ﹤0.01% | 2579 |
|
|
2018
Q2 | $232K | Buy |
+800
| New | +$225K | ﹤0.01% | 3510 |
|
|
2014
Q1 | – | Sell |
-5,500
| Closed | -$1.54M | – | 3450 |
|
|
2013
Q4 | $1.54M | Sell |
5,500
-23,000
| -81% | -$5.95M | ﹤0.01% | 2010 |
|
|
2013
Q3 | $6.86M | Sell |
28,500
-104,600
| -79% | -$23.4M | 0.02% | 928 |
|
|
2013
Q2 | $28.6M | Buy |
+133,100
| New | +$28.4M | 0.09% | 191 |
|
Other funds holding BIIB
VCM
VPM
Millennium Management's BIIB Position: Q1 2026 in Review
Millennium Management reduced its Biogen (BIIB) stake by 92% in Q1 2026, selling an estimated $190M and leaving 93,964 shares worth $17.2M. The position accounts for 0.01% of the portfolio, ranked #1672.
Millennium Management first reported a position in BIIB in Q2 2013 and has held it in 52 quarters since. The position peaked at $372M in Q2 2015. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.
- Millennium Management held 93,964 shares of Biogen worth $17.2M as of Q1 2026.
- Millennium Management sold 1,031,622 Biogen shares in Q1 2026, an estimated $190M.
- Biogen made up 0.01% of Millennium Management's portfolio in Q1 2026, its #1672 holding.
- Millennium Management first reported a position in Biogen in Q2 2013 and has held it in 52 quarters since.
- Millennium Management's Biogen position peaked at $372M in Q2 2015.
- 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.
Based on Millennium Management's 13F filing for Q1 2026, filed 15 May 2026.