Natixis Advisors’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 | $9.09M | Buy |
42,052
+780
| +2% | +$149K | 0.01% | 758 |
|
|
2026
Q1 | $7.57M | Buy |
41,272
+7,936
| +24% | +$1.46M | 0.01% | 737 |
|
|
2025
Q4 | $5.87M | Sell |
33,336
-6,180
| -16% | -$1.01M | 0.01% | 773 |
|
|
2025
Q3 | $5.54M | Buy |
39,516
+1,317
| +3% | +$178K | 0.01% | 816 |
|
|
2025
Q2 | $4.8M | Buy |
38,199
+11,292
| +42% | +$1.41M | 0.01% | 827 |
|
|
2025
Q1 | $3.68M | Buy |
26,907
+9,946
| +59% | +$1.42M | 0.01% | 888 |
|
|
2024
Q4 | $2.59M | Sell |
16,961
-7,796
| -31% | -$1.31M | ﹤0.01% | 1016 |
|
|
2024
Q3 | $4.8M | Sell |
24,757
-10,054
| -29% | -$2.1M | 0.01% | 840 |
|
|
2024
Q2 | $8.07M | Buy |
34,811
+9,714
| +39% | +$2.11M | 0.02% | 673 |
|
|
2024
Q1 | $5.41M | Buy |
25,097
+931
| +4% | +$218K | 0.01% | 777 |
|
|
2023
Q4 | $6.25M | Buy |
24,166
+565
| +2% | +$139K | 0.02% | 688 |
|
|
2023
Q3 | $6.07M | Sell |
23,601
-4,720
| -17% | -$1.26M | 0.02% | 653 |
|
|
2023
Q2 | $8.07M | Buy |
28,321
+1,791
| +7% | +$533K | 0.02% | 590 |
|
|
2023
Q1 | $7.38M | Buy |
26,530
+4,429
| +20% | +$1.23M | 0.03% | 593 |
|
|
2022
Q4 | $6.12M | Buy |
22,101
+874
| +4% | +$247K | 0.02% | 635 |
|
|
2022
Q3 | $5.67M | Buy |
21,227
+3,376
| +19% | +$717K | 0.02% | 592 |
|
|
2022
Q2 | $3.64M | Buy |
17,851
+1,973
| +12% | +$403K | 0.02% | 743 |
|
|
2022
Q1 | $3.34M | Sell |
15,878
-521
| -3% | -$113K | 0.01% | 808 |
|
|
2021
Q4 | $3.94M | Sell |
16,399
-5,526
| -25% | -$1.42M | 0.02% | 748 |
|
|
2021
Q3 | $6.2M | Buy |
21,925
+1,920
| +10% | +$629K | 0.03% | 573 |
|
|
2021
Q2 | $6.93M | Buy |
20,005
+681
| +4% | +$206K | 0.03% | 528 |
|
|
2021
Q1 | $5.41M | Buy |
19,324
+68
| +0.4% | +$18.3K | 0.03% | 568 |
|
|
2020
Q4 | $4.71M | Sell |
19,256
-67,917
| -78% | -$17.5M | 0.03% | 583 |
|
|
2020
Q3 | $24.7M | Buy |
87,173
+1,757
| +2% | +$490K | 0.16% | 154 |
|
|
2020
Q2 | $22.9M | Sell |
85,416
-15,202
| -15% | -$4.57M | 0.15% | 165 |
|
|
2020
Q1 | $31.8M | Buy |
100,618
+11,432
| +13% | +$3.47M | 0.26% | 80 |
|
|
2019
Q4 | $26.5M | Sell |
89,186
-1,199
| -1% | -$333K | 0.19% | 121 |
|
|
2019
Q3 | $21M | Buy |
90,385
+6,129
| +7% | +$1.43M | 0.17% | 148 |
|
|
2019
Q2 | $19.7M | Buy |
84,256
+24,999
| +42% | +$5.77M | 0.16% | 146 |
|
|
2019
Q1 | $14M | Sell |
59,257
-13,524
| -19% | -$4.26M | 0.12% | 187 |
|
|
2018
Q4 | $21.9M | Sell |
72,781
-8,853
| -11% | -$2.83M | 0.22% | 97 |
|
|
2018
Q3 | $28.8M | Buy |
81,634
+609
| +0.8% | +$210K | 0.25% | 82 |
|
|
2018
Q2 | $23.5M | Buy |
81,025
+1,213
| +2% | +$341K | 0.22% | 93 |
|
|
2018
Q1 | $21.9M | Buy |
79,812
+10,561
| +15% | +$3.28M | 0.22% | 96 |
|
|
2017
Q4 | $22.1M | Buy |
69,251
+4,519
| +7% | +$1.45M | 0.22% | 94 |
|
|
2017
Q3 | $20.3M | Buy |
64,732
+4,155
| +7% | +$1.23M | 0.21% | 98 |
|
|
2017
Q2 | $16.4M | Buy |
60,577
+1,765
| +3% | +$467K | 0.18% | 128 |
|
|
2017
Q1 | $16.1M | Buy |
58,812
+4,078
| +7% | +$1.15M | 0.18% | 125 |
|
|
2016
Q4 | $15.5M | Buy |
54,734
+8,386
| +18% | +$2.49M | 0.19% | 128 |
|
|
2016
Q3 | $14.5M | Sell |
46,348
-1,805
| -4% | -$535K | 0.19% | 130 |
|
|
2016
Q2 | $11.6M | Buy |
48,153
+3,302
| +7% | +$870K | 0.16% | 156 |
|
|
2016
Q1 | $11.7M | Buy |
44,851
+7,420
| +20% | +$1.96M | 0.17% | 141 |
|
|
2015
Q4 | $11.5M | Sell |
37,431
-12,213
| -25% | -$3.51M | 0.19% | 128 |
|
|
2015
Q3 | $14.5M | Buy |
49,644
+1,558
| +3% | +$515K | 0.25% | 77 |
|
|
2015
Q2 | $19.4M | Buy |
48,086
+4,339
| +10% | +$1.74M | 0.33% | 55 |
|
|
2015
Q1 | $18.5M | Buy |
43,747
+1,356
| +3% | +$534K | 0.32% | 51 |
|
|
2014
Q4 | $14.4M | Buy |
42,391
+4,752
| +13% | +$1.54M | 0.27% | 68 |
|
|
2014
Q3 | $12.5M | Buy |
37,639
+13,428
| +55% | +$4.43M | 0.25% | 79 |
|
|
2014
Q2 | $7.63M | Buy |
24,211
+450
| +2% | +$135K | 0.11% | 303 |
|
|
2014
Q1 | $7.27M | Buy |
23,761
+1,753
| +8% | +$556K | 0.11% | 307 |
|
|
2013
Q4 | $6.15M | Buy |
22,008
+1,012
| +5% | +$262K | 0.1% | 339 |
|
|
2013
Q3 | $5.05M | Buy |
20,996
+562
| +3% | +$126K | 0.09% | 375 |
|
|
2013
Q2 | $4.4M | Buy |
+20,434
| New | +$4.37M | 0.09% | 384 |
|
Other funds holding BIIB
Natixis Advisors's BIIB Position: Q2 2026 in Review
Natixis Advisors increased its Biogen (BIIB) stake by 1.9% in Q2 2026, buying an estimated $149K and bringing the position to 42,052 shares worth $9.09M. The position accounts for 0.01% of the portfolio, ranked #758.
Natixis Advisors first reported a position in BIIB in Q2 2013 and has held it in 53 quarters since. The position peaked at $31.8M in Q1 2020. 1,036 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.
- Natixis Advisors held 42,052 shares of Biogen worth $9.09M as of Q2 2026.
- Natixis Advisors bought 780 Biogen shares in Q2 2026, an estimated $149K.
- Biogen made up 0.01% of Natixis Advisors's portfolio in Q2 2026, its #758 holding.
- Natixis Advisors first reported a position in Biogen in Q2 2013 and has held it in 53 quarters since.
- Natixis Advisors's Biogen position peaked at $31.8M in Q1 2020.
- 1,036 funds tracked by Wall St. Rank held Biogen as of Q2 2026.
Based on Natixis Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.