Fred Alger 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 | $134M | Sell |
733,194
-65,580
| -8% | -$12.1M | 0.59% | 27 |
|
|
2025
Q4 | $141M | Buy |
798,774
+796,735
| +39,075% | +$130M | 0.55% | 30 |
|
|
2025
Q3 | $286K | Buy |
+2,039
| New | +$276K | ﹤0.01% | 427 |
|
|
2025
Q2 | – | Sell |
-12,159
| Closed | -$1.66M | – | 444 |
|
|
2025
Q1 | $1.66M | Buy |
+12,159
| New | +$1.74M | 0.01% | 308 |
|
|
2024
Q1 | – | Sell |
-13,235
| Closed | -$3.42M | – | 451 |
|
|
2023
Q4 | $3.42M | Buy |
+13,235
| New | +$3.25M | 0.02% | 285 |
|
|
2023
Q3 | – | Sell |
-125,980
| Closed | -$35.9M | – | 471 |
|
|
2023
Q2 | $35.9M | Sell |
125,980
-143,458
| -53% | -$42.7M | 0.18% | 126 |
|
|
2023
Q1 | $74.9M | Sell |
269,438
-62,627
| -19% | -$17.3M | 0.4% | 78 |
|
|
2022
Q4 | $92M | Buy |
332,065
+188,033
| +131% | +$53.1M | 0.5% | 59 |
|
|
2022
Q3 | $38.5M | Buy |
+144,032
| New | +$30.6M | 0.19% | 130 |
|
|
2021
Q3 | – | Sell |
-85,613
| Closed | -$29.6M | – | 515 |
|
|
2021
Q2 | $29.6M | Buy |
85,613
+67,888
| +383% | +$20.6M | 0.07% | 187 |
|
|
2021
Q1 | $4.96M | Buy |
17,725
+13,766
| +348% | +$3.71M | 0.01% | 299 |
|
|
2020
Q4 | $969K | Buy |
3,959
+3,942
| +23,188% | +$1.02M | ﹤0.01% | 371 |
|
|
2020
Q3 | $5K | Sell |
17
-3,850
| -100% | -$1.07M | ﹤0.01% | 453 |
|
|
2020
Q2 | $1.03M | Sell |
3,867
-159,223
| -98% | -$47.9M | ﹤0.01% | 353 |
|
|
2020
Q1 | $51.6M | Buy |
163,090
+24,245
| +17% | +$7.36M | 0.23% | 102 |
|
|
2019
Q4 | $41.2M | Buy |
+138,845
| New | +$38.5M | 0.15% | 135 |
|
|
2019
Q3 | – | Sell |
-42
| Closed | -$10K | – | 486 |
|
|
2019
Q2 | $10K | Sell |
42
-1,979
| -98% | -$457K | ﹤0.01% | 489 |
|
|
2019
Q1 | $478K | Sell |
2,021
-215,110
| -99% | -$67.7M | ﹤0.01% | 369 |
|
|
2018
Q4 | $65.3M | Sell |
217,131
-80,405
| -27% | -$25.7M | 0.3% | 75 |
|
|
2018
Q3 | $105M | Buy |
297,536
+284,735
| +2,224% | +$98M | 0.39% | 55 |
|
|
2018
Q2 | $3.71M | Sell |
12,801
-1,620
| -11% | -$455K | 0.02% | 244 |
|
|
2018
Q1 | $3.95M | Buy |
14,421
+1,092
| +8% | +$339K | 0.02% | 244 |
|
|
2017
Q4 | $4.25M | Buy |
13,329
+5,537
| +71% | +$1.78M | 0.02% | 233 |
|
|
2017
Q3 | $2.44M | Buy |
7,792
+1,250
| +19% | +$370K | 0.01% | 273 |
|
|
2017
Q2 | $1.77M | Sell |
6,542
-6,861
| -51% | -$1.81M | 0.01% | 294 |
|
|
2017
Q1 | $3.67M | Sell |
13,403
-522,626
| -97% | -$148M | 0.02% | 250 |
|
|
2016
Q4 | $152M | Buy |
536,029
+86,307
| +19% | +$25.6M | 0.83% | 32 |
|
|
2016
Q3 | $141M | Sell |
449,722
-138,659
| -24% | -$41.1M | 0.72% | 35 |
|
|
2016
Q2 | $142M | Sell |
588,381
-119,522
| -17% | -$31.5M | 0.75% | 30 |
|
|
2016
Q1 | $184M | Buy |
707,903
+121,551
| +21% | +$32.1M | 0.93% | 24 |
|
|
2015
Q4 | $180M | Buy |
586,352
+117,434
| +25% | +$33.7M | 0.87% | 31 |
|
|
2015
Q3 | $137M | Sell |
468,918
-403,077
| -46% | -$133M | 0.75% | 44 |
|
|
2015
Q2 | $352M | Buy |
871,995
+19,093
| +2% | +$7.66M | 1.59% | 10 |
|
|
2015
Q1 | $360M | Buy |
852,902
+252,392
| +42% | +$99.5M | 1.62% | 9 |
|
|
2014
Q4 | $204M | Buy |
600,510
+170,810
| +40% | +$55.3M | 0.98% | 24 |
|
|
2014
Q3 | $142M | Sell |
429,700
-43,899
| -9% | -$14.5M | 0.69% | 38 |
|
|
2014
Q2 | $149M | Sell |
473,599
-34,220
| -7% | -$10.3M | 0.74% | 39 |
|
|
2014
Q1 | $155M | Sell |
507,819
-71,811
| -12% | -$22.8M | 0.77% | 28 |
|
|
2013
Q4 | $162M | Buy |
579,630
+253,735
| +78% | +$65.6M | 0.83% | 26 |
|
|
2013
Q3 | $78.5M | Buy |
325,895
+64,841
| +25% | +$14.5M | 0.44% | 69 |
|
|
2013
Q2 | $56.2M | Buy |
+261,054
| New | +$55.8M | 0.33% | 91 |
|
Other funds holding BIIB
VCM
VPM
Fred Alger Management's BIIB Position: Q1 2026 in Review
Fred Alger Management reduced its Biogen (BIIB) stake by 8.2% in Q1 2026, selling an estimated $12.1M and leaving 733,194 shares worth $134M. The position accounts for 0.59% of the portfolio, ranked #27.
Fred Alger Management first reported a position in BIIB in Q2 2013 and has held it in 41 quarters since. The position peaked at $360M in Q1 2015. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.
- Fred Alger Management held 733,194 shares of Biogen worth $134M as of Q1 2026.
- Fred Alger Management sold 65,580 Biogen shares in Q1 2026, an estimated $12.1M.
- Biogen made up 0.59% of Fred Alger Management's portfolio in Q1 2026, its #27 holding.
- Fred Alger Management first reported a position in Biogen in Q2 2013 and has held it in 41 quarters since.
- Fred Alger Management's Biogen position peaked at $360M in Q1 2015.
- 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.
Based on Fred Alger Management's 13F filing for Q1 2026, filed 15 May 2026.