Biogen Inc.
US ˙ NasdaqGS ˙ US09062X1037

SecurityBIIB / Biogen Inc.
InstitutionPoint72 Hong Kong Ltd
ManagerSteven Cohen
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Point72 Hong Kong Ltd ownership in BIIB / Biogen Inc.

On November 14, 2025 - Point72 Hong Kong Ltd filed a 13F-HR form disclosing ownership of 0 shares of Biogen Inc. (US:BIIB) valued at $0 USD as of September 30, 2025. The entity filed a previous 13F-HR on August 14, 2025 disclosing 11,083 shares of Biogen Inc.. This represents a change in shares of -100.00% during the quarter. The current value of the position is $0 USD.

Point72 Hong Kong Ltd has a history of taking positions in derivatives of the underlying security (BIIB) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD and put options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

BIIB / Biogen Inc. Historical Put/Call Ratio
Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2025-11-14 2025-09-30 13F BIOGEN COM 09062X103 0 -11,083 -100.00 0 -100.00
2025-08-14 2025-06-30 13F BIOGEN COM 09062X103 11,083 7,203 185.64 1,392 162.45 0.0902
2025-05-15 2025-03-31 13F BIOGEN COM 09062X103 3,880 -22,299 -85.18 531 -86.76 0.0338
2025-02-14 2024-12-31 13F BIOGEN COM 09062X103 26,179 26,179 4,003 0.2443
2024-08-14 2024-06-30 13F BIOGEN COM 09062X103 0 -5,902 -100.00 0 -100.00
2024-05-15 2024-03-31 13F BIOGEN COM 09062X103 5,902 5,902 1,273 0.0635
2023-02-14 2022-12-31 13F BIOGEN COM 09062X103 0 -6,022 -100.00 0 -100.00
2022-11-14 2022-09-30 13F BIOGEN COM 09062X103 6,022 -9,074 -60.11 1,608 -47.78 0.0562
2022-08-15 2022-06-30 13F BIOGEN COM 09062X103 15,096 4,999 49.51 3,079 44.83 0.1134
2022-05-16 2022-03-31 13F BIOGEN COM 09062X103 10,097 9,758 2,878.47 2,126 2,524.69 0.0729
2022-02-14 2021-12-31 13F BIOGEN COM 09062X103 339 -22,020 -98.48 81 -98.72 0.0028
2021-11-15 2021-09-30 13F BIOGEN COM 09062X103 22,359 6,679 42.60 6,327 16.52 0.2057
2021-08-16 2021-06-30 13F BIOGEN COM 09062X103 15,680 15,680 5,430 0.1761
2021-05-17 2021-03-31 13F BIOGEN COM 09062X103 0 -1,840 -100.00 0 -100.00
2021-02-16 2020-12-31 13F BIOGEN COM 09062X103 1,840 1,840 451 0.0204
2020-11-16 2020-09-30 13F BIOGEN COM 09062X103 0 -7,699 -100.00 0 -100.00
2020-08-14 2020-06-30 13F BIOGEN COM 09062X103 7,699 7,079 1,141.77 2,060 951.02 0.2294
2020-05-15 2020-03-31 13F BIOGEN COM 09062X103 620 -724 -53.87 196 -50.88 0.0865
2020-02-14 2019-12-31 13F BIOGEN COM 09062X103 1,344 1,099 448.57 399 600.00 0.0943
2019-11-14 2019-09-30 13F BIOGEN COM 09062X103 245 245 -81.77 57 -85.71 0.0164
2019-08-14 2019-06-30 13F BIOGEN COM 09062X103 0 -127 -100.00 0 -100.00
2019-05-15 2019-03-31 13F BIOGEN COM 09062X103 127 127 30 0.0118
2018-11-14 2018-09-30 13F BIOGEN COM 09062X103 0 -90 -100.00 0 -100.00
2018-08-14 2018-06-30 13F BIOGEN COM 09062X103 90 -293 -76.50 26 -75.24 0.0088
2018-05-15 2018-03-31 13F BIOGEN COM 09062X103 383 383 325.56 105 303.85 0.0541
2018-02-14 2017-12-31 13F BIOGEN COM 09062X103 0 -97 -100.00 0 -100.00
2017-11-14 2017-09-30 13F BIOGEN COM 09062X103 97 -484 -83.30 30 -81.01 0.0213
2017-08-14 2017-06-30 13F BIOGEN COM 09062X103 581 581 498.97 158 426.67 0.1643
2017-05-15 2017-03-31 13F BIOGEN COM 09062X103 0 -7,730 -100.00 0 -100.00
2017-02-14 2016-12-31 13F BIOGEN COM 09062X103 7,730 7,730 0.00 2,192 2.1863
2016-11-14 2016-09-30 13F BIOGEN COM 09062X103 0 -7,346 -100.00 0 -100.00
2016-08-15 2016-06-30 13F BIOGEN COM 09062X103 7,346 7,346 0.00 1,776 2.0595
2016-05-16 2016-03-31 13F BIOGEN COM 09062X103 0 -100 -100.00 0 -100.00
2016-02-16 2015-12-31 13F BIOGEN COM 09062X103 100 100 0.00 31 0.1028
2015-08-14 2015-06-30 13F BIOGEN COM 09062X103 0 -820 -100.00 0 -100.00
2015-05-15 2015-03-31 13F BIOGEN COM 09062X103 820 654 393.98 346 517.86 0.3054
2015-02-17 2014-12-31 13F BIOGEN IDEC COM 09062X103 166 166 56 0.0553
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2023-02-14 2022-12-31 13F BIOGEN COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2022-11-14 2022-09-30 13F BIOGEN COM Call 4,000 37.93 1,068 80.71 n/a n/a n/a
2022-08-15 2022-06-30 13F BIOGEN COM Call 2,900 -40.82 591 -42.73 n/a n/a n/a
2022-05-16 2022-03-31 13F BIOGEN COM Call 4,900 81.48 1,032 59.26 n/a n/a n/a
2022-02-14 2021-12-31 13F BIOGEN COM Call 2,700 -74.04 648 -77.98 n/a n/a n/a
2021-11-15 2021-09-30 13F BIOGEN COM Call 10,400 -17.46 2,943 -32.55 n/a n/a n/a
2021-08-16 2021-06-30 13F BIOGEN COM Call 12,600 4,363 n/a n/a n/a
Disclosed Put Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2023-02-14 2022-12-31 13F BIOGEN COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2022-11-14 2022-09-30 13F BIOGEN COM Put 8,200 90.70 2,189 149.60 n/a n/a n/a
2022-08-15 2022-06-30 13F BIOGEN COM Put 4,300 -20.37 877 -22.87 n/a n/a n/a
2022-05-16 2022-03-31 13F BIOGEN COM Put 5,400 184.21 1,137 149.34 n/a n/a n/a
2022-02-14 2021-12-31 13F BIOGEN COM Put 1,900 -82.73 456 -85.35 n/a n/a n/a
2021-11-15 2021-09-30 13F BIOGEN COM Put 11,000 17.02 3,113 -4.36 n/a n/a n/a
2021-08-16 2021-06-30 13F BIOGEN COM Put 9,400 3,255 n/a n/a n/a
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.