Fmr Llc ownership in IDP / Biogen Inc.

Biogen Inc.

DE ˙ DB ˙ US09062X1037

170,90 € ↑8,70 (5,36%)

2026-06-04
AKTIENPREIS

Security	DE:IDP / Biogen Inc.
Institution	Fmr Llc
Latest Disclosed Ownership	16,652,974 shares
Ownership	11.30%

2026-06-05 - Fmr Llc has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 16,652,974 shares of Biogen Inc. (DE:IDP). This represents 11.3 percent ownership of the company. In their previous filing dated 2026-02-05 , Fmr Llc had reported owning 9,413,062 shares, indicating an increase of 76.91 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File Date	Effective Date	Form	Prev Shares	Latest Shares	ΔShares (Percent)	Ownership (Percent)	ΔOwnership (Percent)
2026-06-05	2026-06-05	13G/A	9,413,062	16,652,974	76.91	11.30	76.56
2026-02-05	2026-02-05	13G	8,411,363	9,413,062	11.91	6.40	65.59
2017-02-14	2017-02-14	13G/A	12,925,994	8,411,363	-34.93	3.87	-33.34
2016-02-12	2016-02-12	13G/A		12,925,994		5.80
2015-02-13	2015-02-13	13G/A		19,788,112		8.38
2014-02-14	2014-02-14	13G/A		24,115,544		10.21
2013-02-14	2013-02-14	13G/A		23,263,262		9.83
2012-08-10	2012-08-10	13G/A		23,975,666		10.14
2012-02-14	2012-02-14	13G		21,092,132		8.68

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-15	2026-03-31	13F	BIOGEN	COM	09062X103	12,807,541	3,381,678	35.88	2,348,007	41.54	0.0246
2026-02-17	2025-12-31	13F	BIOGEN	COM	09062X103	9,425,863	8,138,103	631.96	1,658,857	819.60	0.0846
2025-11-13	2025-09-30	13F	BIOGEN	COM	09062X103	1,287,760	-386,460	-23.08	180,389	-14.21	0.0094
2025-08-14	2025-06-30	13F	BIOGEN	COM	09062X103	1,674,220	365,392	27.92	210,265	17.40	0.0119
2025-05-12	2025-03-31	13F	BIOGEN	COM	09062X103	1,308,828	551,258	72.77	179,100	54.60	0.0114
2025-02-13	2024-12-31	13F	BIOGEN	COM	09062X103	757,570	376,356	98.73	115,848	56.77	0.0069
2024-11-13	2024-09-30	13F	BIOGEN	COM	09062X103	381,214	-229,202	-37.55	73,895	-47.78	0.0045
2024-08-13	2024-06-30	13F	BIOGEN	COM	09062X103	610,416	-10,434	-1.68	141,507	5.70	0.0091
2024-05-13	2024-03-31	13F	BIOGEN	COM	09062X103	620,850	-380,294	-37.99	133,874	-48.32	0.0090
2024-02-13	2023-12-31	13F	BIOGEN	COM	09062X103	1,001,144	-359,907	-26.44	259,066	-25.94	0.0199
2023-11-13	2023-09-30	13F	BIOGEN	COM	09062X103	1,361,051	-1,279,470	-48.46	349,804	-53.49	0.0302
2023-08-11	2023-06-30	13F	BIOGEN	COM	09062X103	2,640,521	887,907	50.66	752,152	54.36	0.0631
2023-08-11	2023-03-31	13F/A-1	BIOGEN	COM	09062X103	1,752,614	541,421	44.70	487,279	45.28	0.0446
2023-05-11	2023-03-31	13F	BIOGEN	COM	09062X103	1,752,614	541,421		487,279		0.0089
2023-02-13	2022-12-31	13F	BIOGEN	COM	09062X103	1,211,193	-265,039	-17.95	335,404	-14.91	0.0333
2022-11-10	2022-09-30	13F	BIOGEN	COM	09062X103	1,476,232	450,066	43.86	394,154	88.34	0.0411
2022-08-12	2022-06-30	13F	BIOGEN	COM	09062X103	1,026,166	638,196	164.50	209,277	156.13	0.0209
2022-05-13	2022-03-31	13F	BIOGEN	COM	09062X103	387,970	200,669	107.14	81,707	81.83	0.0065
2022-02-14	2021-12-31	13F	BIOGEN	COM	09062X103	187,301	-990,252	-84.09	44,937	-86.51	0.0033
2022-02-14	2021-09-30	13F/A-1	BIOGEN	COM	09062X103	1,177,553	-174,665	-12.92	333,235	-28.83	0.0264
2021-11-15	2021-09-30	13F	BIOGEN	COM	09062X103	1,177,553	-174,665		333,235		0.0051
2021-08-13	2021-06-30	13F	BIOGEN	COM	09062X103	1,352,218	-562,998	-29.40	468,233	-12.61	0.0367
2021-05-14	2021-03-31	13F	BIOGEN	COM	09062X103	1,915,216	-66,652	-3.36	535,782	10.41	0.0458
2021-02-08	2020-12-31	13F	BIOGEN	COM	09062X103	1,981,868	897,042	82.69	485,280	57.69	0.0432
2020-11-13	2020-09-30	13F	BIOGEN	COM	09062X103	1,084,826	-57,568	-5.04	307,743	0.69	0.0311
2020-08-24	2020-06-30	13F/A-1	BIOGEN	COM	09062X103	1,142,394	-1,045,442	-47.78	305,648	-55.84	0.0336
2020-08-13	2020-06-30	13F	BIOGEN	COM	09062X103	1,142,394	-1,045,442		305,648		7,508.8769
2020-05-14	2020-03-31	13F	BIOGEN	COM	09062X103	2,187,836	729,227	49.99	692,187	59.93	0.0959
2020-02-07	2019-12-31	13F	BIOGEN	COM	09062X103	1,458,609	-261,063	-15.18	432,813	8.10	0.0478
2019-11-13	2019-09-30	13F	BIOGEN	COM	09062X103	1,719,672	-322,604	-15.80	400,374	-16.17	0.0480
2019-08-13	2019-06-30	13F	BIOGEN	COM	09062X103	2,042,276	-509,390	-19.96	477,627	-20.81	0.0558
2019-05-13	2019-03-31	13F	BIOGEN	COM	09062X103	2,551,666	-1,119,400	-30.49	603,162	-45.40	0.0723
2019-02-13	2018-12-31	13F	BIOGEN	COM	09062X103	3,671,066	-651,121	-15.06	1,104,697	-27.66	0.1513
2018-11-09	2018-09-30	13F	BIOGEN	COM	09062X103	4,322,187	-1,025,928	-19.18	1,527,072	-1.62	0.1718
2018-08-10	2018-06-30	13F	BIOGEN	COM	09062X103	5,348,115	-1,422,922	-21.01	1,552,237	-16.28	0.1833
2018-05-14	2018-03-31	13F	BIOGEN	COM	09062X103	6,771,037	-2,321,382	-25.53	1,854,045	-35.99	0.2201
2018-02-12	2017-12-31	13F	BIOGEN	COM	09062X103	9,092,419	1,940,450	27.13	2,896,571	29.34	0.3395
2017-11-13	2017-09-30	13F	BIOGEN	COM	09062X103	7,151,969	1,047,943	17.17	2,239,425	35.20	0.2708
2017-08-29	2017-06-30	13F/A-1	BIOGEN	COM	09062X103	6,104,026	561,436	10.13	1,656,390	9.30	0.2059
2017-08-11	2017-06-30	13F	BIOGEN	COM	09062X103	6,104,026	561,436		1,656,390
2017-05-11	2017-03-31	13F	BIOGEN	COM	09062X103	5,542,590	-2,657,944	-32.41	1,515,455	-34.83	0.1925
2017-02-10	2016-12-31	13F	BIOGEN	COM	09062X103	8,200,534	-1,518,017	-15.62	2,325,508	-23.56	0.3108
2016-11-14	2016-09-30	13F	BIOGEN	COM	09062X103	9,718,551	-1,723,597	-15.06	3,042,197	9.95	0.4052
2016-08-11	2016-06-30	13F	BIOGEN	COM	09062X103	11,442,148	-2,050,916	-15.20	2,766,940	-21.23	0.3777
2016-05-16	2016-03-31	13F	BIOGEN	COM	09062X103	13,493,064	567,069	4.39	3,512,514	-11.30	0.4860
2016-02-12	2015-12-31	13F	BIOGEN	COM	09062X103	12,925,995	-3,637,805	-21.96	3,959,878	-18.07	0.5327
2015-11-10	2015-09-30	13F	BIOGEN	COM	09062X103	16,563,800	-5,174,594	-23.80	4,833,482	-44.96	0.6881
2015-08-25	2015-06-30	13F/A-1	BIOGEN	COM	09062X103	21,738,394	-302,757	-1.37	8,781,007	-5.65	1.1254
2015-08-13	2015-06-30	13F	BIOGEN	COM	09062X103	21,738,394			8,781,007
2015-05-14	2015-03-31	13F	BIOGEN	COM	09062X103	22,041,151	2,253,038	11.39	9,306,655	38.55	1.1854
2015-02-17	2014-12-31	13F	BIOGEN IDEC	COM	09062X103	19,788,113	785,319	4.13	6,717,074	6.85	0.8740
2014-11-14	2014-09-30	13F	BIOGEN IDEC	COM	09062X103	19,002,794	-2,141,978	-10.13	6,286,313	-5.71	0.8514
2014-08-14	2014-06-30	13F	BIOGEN IDEC	COM	09062X103	21,144,772	-780,556	-3.56	6,667,159	-0.58	0.8936
2014-05-15	2014-03-31	13F	BIOGEN IDEC	COM	09062X103	21,925,328	-2,116,187	-8.80	6,706,300	-0.29	0.9312
2014-02-13	2013-12-31	13F	BIOGEN IDEC	COM	09062X103	24,041,515	-1,598,992	-6.24	6,725,614	8.95	0.9504
2013-11-14	2013-09-30	13F	BIOGEN IDEC	COM	09062X103	25,640,507	2,111,978	8.98	6,173,208	21.92	0.9460
2013-09-24	2013-06-30	13F/A-1	BIOGEN IDEC	COM	09062X103	23,528,529	23,528,529		5,063,340		0.8288
2013-08-14	2013-06-30	13F	BIOGEN IDEC	COM	09062X103	23,528,529			5,063,340		0.8288

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.