Biogen Inc.
DE ˙ DB ˙ US09062X1037
€ 170,90 ↑8.70 (5.36%)
2026-06-04
PREÇO DA AÇÃO
SecurityDE:IDP / Biogen Inc.
InstitutionBokf, Na
Latest Disclosed Ownership9,719 shares
Latest Disclosed Value $ 1,781,785
Bokf, Na reports 34.63% decrease in ownership of IDP / Biogen Inc.

On May 8, 2026 - Bokf, Na filed a 13F-HR form disclosing ownership of 9,719 shares of Biogen Inc. (DE:IDP) valued at $1,508,875 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 14,868 shares of Biogen Inc.. This represents a change in shares of -34.63% during the quarter. The current value of the position is $1,660,977 USD.

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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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)
2026-05-08 2026-03-31 13F BIOGEN common 09062X103 9,719 -5,149 -34.63 1,782 -31.92 0.0210
2026-02-03 2025-12-31 13F BIOGEN common 09062X103 14,868 -5,412 -26.69 2,617 -7.89 0.0400
2025-11-13 2025-09-30 13F BIOGEN common 09062X103 20,280 -1,131 -5.28 2,841 5.62 0.0427
2025-08-12 2025-06-30 13F BIOGEN common 09062X103 21,411 -1,251 -5.52 2,689 -13.29 0.0435
2025-05-13 2025-03-31 13F BIOGEN common 09062X103 22,662 1,810 8.68 3,101 -0.06 0.0548
2025-02-14 2024-12-31 13F BIOGEN common 09062X103 20,852 -3,357 -13.87 3,103 -30.63 0.0524
2024-11-14 2024-09-30 13F BIOGEN common 09062X103 24,209 -619 -2.49 4,473 -22.28 0.0794
2024-08-08 2024-06-30 13F BIOGEN COM 09062X103 24,828 -970 -3.76 5,756 3.84 0.1033
2024-05-15 2024-03-31 13F BIOGEN COM 09062X103 25,798 -8,556 -24.91 5,542 -37.65 0.1009
2024-02-14 2023-12-31 13F BIOGEN COM 09062X103 34,354 -8,607 -20.03 8,890 -12.89 0.1741
2023-11-14 2023-09-30 13F BIOGEN COM 09062X103 42,961 15,583 56.92 10,205 30.85 0.2249
2023-08-21 2023-06-30 13F BIOGEN COM 09062X103 27,378 5,424 24.71 7,799 27.77 0.1588
2023-05-11 2023-03-31 13F BIOGEN COM 09062X103 21,954 -6,894 -23.90 6,104 -23.60 0.1277
2023-02-13 2022-12-31 13F BIOGEN COM 09062X103 28,848 147 0.51 7,989 4.24 0.1474
2022-11-14 2022-09-30 13F BIOGEN COM 09062X103 28,701 9,421 48.86 7,663 94.89 0.1551
2022-08-11 2022-06-30 13F BIOGEN COM 09062X103 19,280 -72 -0.37 3,932 -3.51 0.0754
2022-05-13 2022-03-31 13F BIOGEN COM 09062X103 19,352 -20 -0.10 4,075 -12.33 0.0672
2022-03-11 2021-12-31 13F BIOGEN COM 09062X103 19,372 -7,135 -26.92 4,648 -38.04 0.0719
2021-11-10 2021-09-30 13F BIOGEN COM 09062X103 26,507 7,419 38.87 7,502 40.49 0.1290
2021-04-21 2021-03-31 13F BIOGEN COM 09062X103 19,088 -1,509 -7.33 5,340 5.89 0.0971
2021-02-12 2020-12-31 13F BIOGEN COM 09062X103 20,597 4,546 28.32 5,043 10.74 0.0962
2020-10-30 2020-09-30 13F BIOGEN COM 09062X103 16,051 4,806 42.74 4,554 51.35 0.1000
2020-08-12 2020-06-30 13F BIOGEN COM 09062X103 11,245 7,629 210.98 3,009 163.02 0.0708
2020-05-13 2020-03-31 13F BIOGEN COM 09062X103 3,616 644 21.67 1,144 29.71 0.0330
2020-02-12 2019-12-31 13F BIOGEN COM 09062X103 2,972 -378 -11.28 882 13.08 0.0199
2019-11-13 2019-09-30 13F BIOGEN COM 09062X103 3,350 -2,309 -40.80 780 -41.04 0.0188
2019-08-14 2019-06-30 13F BIOGEN COM 09062X103 5,659 -504 -8.18 1,323 -9.20 0.0318
2019-05-15 2019-03-31 13F BIOGEN COM 09062X103 6,163 -8,282 -57.33 1,457 -66.48 0.0349
2019-02-13 2018-12-31 13F BIOGEN COM 09062X103 14,445 -1,497 -9.39 4,347 -22.82 0.1244
2018-11-13 2018-09-30 13F BIOGEN COM 09062X103 15,942 -3,708 -18.87 5,632 -1.24 0.1414
2018-08-13 2018-06-30 13F BIOGEN COM 09062X103 19,650 2,996 17.99 5,703 25.07 0.1535
2018-05-14 2018-03-31 13F BIOGEN COM 09062X103 16,654 1,141 7.36 4,560 -7.73 0.1295
2018-02-14 2017-12-31 13F BIOGEN COM 09062X103 15,513 -10 -0.06 4,942 1.69 0.1361
2017-11-14 2017-09-30 13F BIOGEN COM 09062X103 15,523 217 1.42 4,860 17.02 0.1411
2017-08-14 2017-06-30 13F BIOGEN COM 09062X103 15,306 -784 -4.87 4,153 -5.61 0.1306
2017-05-15 2017-03-31 13F BIOGEN COM 09062X103 16,090 -387 -2.35 4,400 -5.82 0.1373
2017-02-14 2016-12-31 13F BIOGEN COM 09062X103 16,477 2,505 17.93 4,672 6.81 0.1537
2016-11-10 2016-09-30 13F BIOGEN COM 09062X103 13,972 5,923 73.59 4,374 124.77 0.1448
2016-08-12 2016-06-30 13F BIOGEN COM 09062X103 8,049 -1,517 -15.86 1,946 -21.85 0.0686
2016-05-13 2016-03-31 13F BIOGEN COM 09062X103 9,566 -8,417 -46.81 2,490 -54.80 0.0900
2016-02-09 2015-12-31 13F BIOGEN COM 09062X103 17,983 -4,858 -21.27 5,509 -17.34 0.1992
2015-11-13 2015-09-30 13F BIOGEN COM 09062X103 22,841 -12,389 -35.17 6,665 -53.17 0.2508
2015-08-13 2015-06-30 13F BIOGEN COM 09062X103 35,230 13,967 65.69 14,231 58.51 0.4831
2015-05-14 2015-03-31 13F BIOGEN COM 09062X103 21,263 1,117 5.54 8,978 31.28 0.3022
2015-02-12 2014-12-31 13F BIOGEN IDEC COM 09062X103 20,146 1,757 9.55 6,839 12.43 0.2360
2014-11-13 2014-09-30 13F BIOGEN IDEC COM 09062X103 18,389 5,140 38.80 6,083 45.63 0.2033
2014-08-14 2014-06-30 13F BIOGEN IDEC COM 09062X103 13,249 525 4.13 4,177 7.32 0.1340
2014-05-14 2014-03-31 13F BIOGEN IDEC COM 09062X103 12,724 -711 -5.29 3,892 3.62 0.1290
2014-02-14 2013-12-31 13F BIOGEN IDEC COM 09062X103 13,435 900 7.18 3,756 24.45 0.1258
2013-11-12 2013-09-30 13F BIOGEN IDEC COM 09062X103 12,535 -3,762 -23.08 3,018 -13.94 0.1096
2013-08-14 2013-06-30 13F BIOGEN IDEC COM 09062X103 16,297 16,297 3,507 0.1325
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.