Two Sigma Investments — BIIB Trade History
Quarter-by-quarter changes in the BIOGEN INC position · CUSIP 09062X103
Currently held · 3.3 YearsFirst seen: 2016 Q3
| Quarter | Filed | Activity | Shares | Δ Shares | Δ % | Value | % Port. |
|---|---|---|---|---|---|---|---|
| 2026 Q2 | 2026-08-14 | Reduce | 7,105 | -2,339 | -24.8% | $1.5M | 0.00% |
| 2026 Q1 | 2026-05-15 | Reduce | 9,444 | -242,319 | -96.2% | $1.7M | 0.00% |
| 2025 Q4 | 2026-02-17 | Add | 251,763 | 46,530 | +22.7% | $44.3M | 0.06% |
| 2025 Q3 | 2025-11-14 | Reduce | 205,233 | -302,306 | -59.6% | $28.7M | 0.04% |
| 2025 Q2 | 2025-08-14 | Reduce | 507,539 | -371,791 | -42.3% | $63.7M | 0.11% |
| 2025 Q1 | 2025-05-15 | Add | 879,330 | 26,994 | +3.2% | $120.3M | 0.26% |
| 2024 Q4 | 2025-02-14 | Add | 852,336 | 203,634 | +31.4% | $130.3M | 0.28% |
| 2024 Q3 | 2024-11-14 | Add | 648,702 | 435,803 | +204.7% | $125.7M | 0.28% |
| 2024 Q2 | 2024-08-14 | Reduce | 212,899 | -113,526 | -34.8% | $49.4M | 0.11% |
| 2024 Q1 | 2024-05-15 | Add | 326,425 | 272,400 | +504.2% | $70.4M | 0.17% |
| 2023 Q4 | 2024-02-14 | Add | 54,025 | 34,511 | +176.9% | $14.0M | 0.03% |
| 2023 Q3 | 2023-11-14 | Reduce | 19,514 | -5,652 | -22.5% | $5.0M | 0.01% |
| 2023 Q2 | 2023-08-14 | New | 25,166 | 25,166 | — | $7.2M | 0.02% |
| 2023 Q1 | 2023-05-15 | Sold out | — | -213,939 | -100.0% | — | — |
| 2022 Q4 | 2023-02-14 | Add | 213,939 | 63,121 | +41.9% | $59.2M | 0.19% |
| 2022 Q3 | 2022-11-14 | Reduce | 150,818 | -93,962 | -38.4% | $40.3M | 0.14% |
| 2022 Q2 | 2022-08-15 | Reduce | 244,780 | -418,752 | -63.1% | $49.9M | 0.17% |
| 2022 Q1 | 2022-05-16 | Add | 663,532 | 185,871 | +38.9% | $139.7M | 0.41% |
| 2021 Q4 | 2022-02-14 | Add | 477,661 | 338,031 | +242.1% | $114.6M | 0.24% |
| 2021 Q3 | 2021-11-15 | Add | 139,630 | 116,441 | +502.1% | $39.5M | 0.09% |
| 2021 Q2 | 2021-08-16 | Add | 23,189 | 17,000 | +274.7% | $8.0M | 0.02% |
| 2021 Q1 | 2021-05-17 | New | 6,189 | 6,189 | — | $1.7M | 0.01% |
| 2020 Q4 | 2021-02-16 | — | — | — | — | — | — |
| 2020 Q3 | 2020-11-16 | — | — | — | — | — | — |
| 2020 Q2 | 2020-08-14 | Sold out | — | -27,300 | -100.0% | — | — |
| 2020 Q1 | 2020-05-15 | New | 27,300 | 27,300 | — | $8.6M | 0.07% |
| 2019 Q4 | 2020-02-14 | Sold out | — | -49,281 | -100.0% | — | — |
| 2019 Q3 | 2019-11-14 | Reduce | 49,281 | -164,359 | -76.9% | $11.5M | 0.04% |
| 2019 Q2 | 2019-08-14 | Add | 213,640 | 167,063 | +358.7% | $50.0M | 0.17% |
| 2019 Q1 | 2019-05-15 | Reduce | 46,577 | -44,989 | -49.1% | $11.0M | 0.04% |
| 2018 Q4 | 2019-02-14 | Add | 91,566 | 50,386 | +122.4% | $27.6M | 0.11% |
| 2018 Q3 | 2018-11-14 | New | 41,180 | 41,180 | — | $14.5M | 0.04% |
| 2018 Q2 | 2018-08-14 | Sold out | — | -948 | -100.0% | — | — |
| 2018 Q1 | 2018-05-15 | Reduce | 948 | -1,325 | -58.3% | $260.0K | 0.00% |
| 2017 Q4 | 2018-02-14 | Reduce | 2,273 | -567 | -20.0% | $724.0K | 0.00% |
| 2017 Q3 | 2017-11-14 | New | 2,840 | 2,840 | — | $889.0K | 0.00% |
| 2017 Q2 | 2017-08-14 | Sold out | — | -5,314 | -100.0% | — | — |
| 2017 Q1 | 2017-05-15 | Reduce | 5,314 | -558,076 | -99.1% | $1.5M | 0.01% |
| 2016 Q4 | 2017-02-14 | Add | 563,390 | 535,631 | +1929.6% | $159.8M | 0.61% |
| 2016 Q3 | 2016-11-14 | New | 27,759 | 27,759 | — | $8.7M | 0.03% |
Share counts are split-adjusted. Time held counts consecutive quarters ending with the latest filing; more than ten years shows as ">10 Years".
13F data shows quarter-end positions, is delayed by up to 45 days and covers only long positions in US-listed securities; short positions, most derivatives and non-US assets are not reported.