SG Americas Securities’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 | $35.9M | Buy |
195,668
+11,839
| +6% | +$2.18M | 0.04% | 364 |
|
|
2025
Q4 | $32.4M | Buy |
183,829
+174,122
| +1,794% | +$28.4M | 0.04% | 341 |
|
|
2025
Q3 | $1.36M | Sell |
9,707
-12,763
| -57% | -$1.73M | ﹤0.01% | 1202 |
|
|
2025
Q2 | $2.82M | Sell |
22,470
-697,323
| -97% | -$86.9M | 0.01% | 644 |
|
|
2025
Q1 | $98.5M | Buy |
+719,793
| New | +$103M | 0.32% | 39 |
|
|
2024
Q4 | – | Sell |
-3,675
| Closed | -$620K | – | 3161 |
|
|
2024
Q3 | $712K | Sell |
3,675
-36,515
| -91% | -$7.64M | ﹤0.01% | 1370 |
|
|
2024
Q2 | $9.32M | Sell |
40,190
-136,072
| -77% | -$29.6M | 0.05% | 347 |
|
|
2024
Q1 | $38M | Buy |
176,262
+162,083
| +1,143% | +$38M | 0.18% | 116 |
|
|
2023
Q4 | $3.67M | Sell |
14,179
-2,387
| -14% | -$586K | 0.03% | 425 |
|
|
2023
Q3 | $4.26M | Sell |
16,566
-1,489
| -8% | -$398K | 0.05% | 354 |
|
|
2023
Q2 | $5.14M | Buy |
18,055
+4,570
| +34% | +$1.36M | 0.04% | 356 |
|
|
2023
Q1 | $3.75M | Sell |
13,485
-13,700
| -50% | -$3.79M | 0.04% | 374 |
|
|
2022
Q4 | $7.53M | Buy |
27,185
+20,213
| +290% | +$5.71M | 0.09% | 179 |
|
|
2022
Q3 | $1.86M | Sell |
6,972
-2,301
| -25% | -$489K | 0.02% | 626 |
|
|
2022
Q2 | $1.89M | Sell |
9,273
-56,121
| -86% | -$11.5M | 0.02% | 779 |
|
|
2022
Q1 | $13.8M | Buy |
65,394
+32,639
| +100% | +$7.1M | 0.1% | 163 |
|
|
2021
Q4 | $7.86M | Buy |
32,755
+11,456
| +54% | +$2.95M | 0.04% | 336 |
|
|
2021
Q3 | $6.03M | Buy |
21,299
+8,455
| +66% | +$2.77M | 0.03% | 457 |
|
|
2021
Q2 | $4.45M | Sell |
12,844
-17,157
| -57% | -$5.2M | 0.02% | 649 |
|
|
2021
Q1 | $8.39M | Sell |
30,001
-30,168
| -50% | -$8.14M | 0.04% | 336 |
|
|
2020
Q4 | $14.7M | Buy |
60,169
+28,332
| +89% | +$7.31M | 0.08% | 192 |
|
|
2020
Q3 | $9.03M | Sell |
31,837
-23,366
| -42% | -$6.52M | 0.06% | 212 |
|
|
2020
Q2 | $14.8M | Buy |
55,203
+46,308
| +521% | +$13.9M | 0.12% | 127 |
|
|
2020
Q1 | $2.81M | Sell |
8,895
-13,217
| -60% | -$4.01M | 0.03% | 630 |
|
|
2019
Q4 | $6.56M | Sell |
22,112
-33,640
| -60% | -$9.33M | 0.06% | 303 |
|
|
2019
Q3 | $13M | Sell |
55,752
-17,829
| -24% | -$4.15M | 0.11% | 174 |
|
|
2019
Q2 | $17.2M | Buy |
73,581
+29,500
| +67% | +$6.81M | 0.12% | 144 |
|
|
2019
Q1 | $10.4M | Buy |
44,081
+34,669
| +368% | +$10.9M | 0.1% | 212 |
|
|
2018
Q4 | $2.83M | Sell |
9,412
-44,414
| -83% | -$14.2M | 0.02% | 639 |
|
|
2018
Q3 | $19M | Buy |
53,826
+20,884
| +63% | +$7.19M | 0.14% | 137 |
|
|
2018
Q2 | $9.56M | Buy |
32,942
+5,997
| +22% | +$1.69M | 0.09% | 229 |
|
|
2018
Q1 | $7.38M | Sell |
26,945
-4,743
| -15% | -$1.47M | 0.06% | 273 |
|
|
2017
Q4 | $10.1M | Buy |
31,688
+1,281
| +4% | +$411K | 0.09% | 177 |
|
|
2017
Q3 | $9.52M | Buy |
30,407
+25,156
| +479% | +$7.45M | 0.08% | 172 |
|
|
2017
Q2 | $1.43M | Sell |
5,251
-38,972
| -88% | -$10.3M | 0.01% | 1135 |
|
|
2017
Q1 | $12.1M | Sell |
44,223
-79,584
| -64% | -$22.5M | 0.11% | 180 |
|
|
2016
Q4 | $35.1M | Buy |
123,807
+120,669
| +3,845% | +$35.8M | 0.29% | 64 |
|
|
2016
Q3 | $982K | Sell |
3,138
-29,088
| -90% | -$8.62M | 0.01% | 1185 |
|
|
2016
Q2 | $7.79M | Sell |
32,226
-51,665
| -62% | -$13.6M | 0.06% | 266 |
|
|
2016
Q1 | $21.8M | Sell |
83,891
-16,497
| -16% | -$4.36M | 0.16% | 104 |
|
|
2015
Q4 | $30.8M | Sell |
100,388
-61,160
| -38% | -$17.6M | 0.22% | 73 |
|
|
2015
Q3 | $19.3M | Buy |
161,548
+66,072
| +69% | +$21.8M | 0.12% | 153 |
|
|
2015
Q2 | $38.6M | Sell |
95,476
-19,263
| -17% | -$7.73M | 0.25% | 57 |
|
|
2015
Q1 | $48.4M | Sell |
114,739
-61,806
| -35% | -$24.4M | 0.29% | 70 |
|
|
2014
Q4 | $59.9M | Sell |
176,545
-74,760
| -30% | -$24.2M | 0.29% | 72 |
|
|
2014
Q3 | $83.1M | Buy |
251,305
+27,317
| +12% | +$9.01M | 0.49% | 36 |
|
|
2014
Q2 | $70.6M | Sell |
223,988
-44,472
| -17% | -$13.4M | 0.41% | 44 |
|
|
2014
Q1 | $82.1M | Buy |
268,460
+6,766
| +3% | +$2.15M | 0.36% | 56 |
|
|
2013
Q4 | $73.2M | Sell |
261,694
-27,976
| -10% | -$7.24M | 0.3% | 68 |
|
|
2013
Q3 | $69.7M | Buy |
289,670
+13,952
| +5% | +$3.12M | 0.29% | 73 |
|
|
2013
Q2 | $59.3M | Buy |
+275,718
| New | +$58.9M | 0.29% | 71 |
|
Other funds holding BIIB
VCM
VPM
SG Americas Securities's BIIB Position: Q1 2026 in Review
SG Americas Securities increased its Biogen (BIIB) stake by 6.4% in Q1 2026, buying an estimated $2.18M and bringing the position to 195,668 shares worth $35.9M. The position accounts for 0.04% of the portfolio, ranked #364.
SG Americas Securities first reported a position in BIIB in Q2 2013 and has held it in 51 quarters since. The position peaked at $98.5M in Q1 2025. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.
- SG Americas Securities held 195,668 shares of Biogen worth $35.9M as of Q1 2026.
- SG Americas Securities bought 11,839 Biogen shares in Q1 2026, an estimated $2.18M.
- Biogen made up 0.04% of SG Americas Securities's portfolio in Q1 2026, its #364 holding.
- SG Americas Securities first reported a position in Biogen in Q2 2013 and has held it in 51 quarters since.
- SG Americas Securities's Biogen position peaked at $98.5M in Q1 2025.
- 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.
Based on SG Americas Securities's 13F filing for Q1 2026, filed 16 Apr 2026.