Steven Cohen's BIIB Position Overview
Steven Cohen (via Point72 Asset Management, L.P.) currently holds 2.81 M shares of Biogen Inc. (BIIB) worth $495.09 M, representing 0.55% of the portfolio. First purchased in 2014-Q2, this long-term strategic position has been held for 39 quarters.
Based on 13F filings, Steven Cohen has maintained a strategic position in BIIB, demonstrating sustained confidence in this investment. Largest addition occurred in Q2 2025, adding 3.42 M shares. Largest reduction occurred in Q4 2025, reducing 1.06 M shares.
Analysis based on 13F filings available since 2013 Q2
Steven Cohen's Biogen (BIIB) Holding Value Over Time
Track share changes against reported price movement
Quarterly Biogen (BIIB) Trades by Steven Cohen
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | -1.06 M | Reduce 27.36% | 2.81 M | $175.99 |
| Q3 2025 | +41,174 | Add 1.07% | 3.87 M | $140.08 |
| Q2 2025 | +3.42 M | Add 840.86% | 3.83 M | $125.59 |
| Q1 2025 | +407,257 | New Buy | 407,257 | $136.84 |
| Q4 2023 | -48,100 | Sold Out | 0 | $0.00 |
| Q3 2023 | -577,541 | Reduce 92.31% | 48,100 | $257.01 |
| Q2 2023 | -69,472 | Reduce 9.99% | 625,641 | $284.85 |
| Q1 2023 | -531,011 | Reduce 43.31% | 695,113 | $278.03 |
| Q4 2022 | -451,858 | Reduce 26.93% | 1.23 M | $276.92 |
| Q3 2022 | +1.22 M | Add 268.14% | 1.68 M | $267.00 |
| Q2 2022 | +360,000 | Add 375.78% | 455,800 | $203.94 |
| Q1 2022 | -515,700 | Reduce 84.33% | 95,800 | $210.59 |
| Q4 2021 | +580,648 | Add 1882.04% | 611,500 | $239.92 |
| Q3 2021 | -214,654 | Reduce 87.43% | 30,852 | $283.00 |
| Q2 2021 | +130,106 | Add 112.74% | 245,506 | $346.27 |
| Q1 2021 | -83,360 | Reduce 41.94% | 115,400 | $279.75 |
| Q4 2020 | +82,817 | Add 71.43% | 198,760 | $244.86 |
| Q3 2020 | +115,943 | New Buy | 115,943 | $283.68 |
| Q1 2020 | -54,081 | Sold Out | 0 | $0.00 |
| Q4 2019 | +54,081 | New Buy | 54,081 | $296.72 |
| Q1 2019 | -35,000 | Sold Out | 0 | $0.00 |
| Q4 2018 | -7,500 | Reduce 17.65% | 35,000 | $300.91 |
| Q3 2018 | -103,500 | Reduce 70.89% | 42,500 | $353.32 |
| Q2 2018 | -298,615 | Reduce 67.16% | 146,000 | $290.24 |
| Q1 2018 | +192,296 | Add 76.21% | 444,615 | $273.82 |
| Q4 2017 | -255,603 | Reduce 50.32% | 252,319 | $318.57 |
| Q3 2017 | -384,179 | Reduce 43.06% | 507,922 | $313.12 |
| Q2 2017 | +675,631 | Add 312.11% | 892,101 | $271.36 |
| Q1 2017 | +162,928 | Add 304.30% | 216,470 | $273.42 |
| Q4 2016 | -64,006 | Reduce 54.45% | 53,542 | $283.57 |
| Q3 2016 | +117,548 | New Buy | 117,548 | $313.03 |
| Q2 2016 | -102,200 | Sold Out | 0 | $0.00 |
| Q1 2016 | +15,500 | Add 17.88% | 102,200 | $260.32 |
| Q4 2015 | +79,900 | Add 1175.00% | 86,700 | $306.36 |
| Q3 2015 | +6,800 | New Buy | 6,800 | $291.76 |
| Q2 2015 | -8,800 | Sold Out | 0 | $0.00 |
| Q1 2015 | +8,800 | New Buy | 8,800 | $422.27 |
| Q3 2014 | -7,600 | Sold Out | 0 | $0.00 |
| Q2 2014 | +7,600 | Add 0.00% | 7,600 | $315.26 |
Steven Cohen's Biogen Investment FAQs
Steven Cohen first purchased Biogen Inc. (BIIB) in Q2 2014, acquiring 7,600 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Steven Cohen has held Biogen Inc. (BIIB) for 39 quarters since Q2 2014.
Steven Cohen's largest addition to Biogen Inc. (BIIB) was in Q2 2025, adding 3,831,727 shares worth $481.23 M.
According to the latest 13F filing for Q4 2025, Steven Cohen's firm, Point72 Asset Management, L.P., owns 2,813,192 shares of Biogen Inc. (BIIB), valued at approximately $495.09 M.
As of the Q4 2025 filing, Biogen Inc. (BIIB) represents approximately 0.55% of Steven Cohen's publicly disclosed stock portfolio, making it one of their key holdings.
Steven Cohen's peak holding in Biogen Inc. (BIIB) was 3,872,901 shares, as reported at the end of Q3 2025.