Biogen Inc.
DE ˙ DB ˙ US09062X1037
170,90 € ↑8,70 (5,36%)
2026-06-04
DEL PRIS
SecurityDE:IDP / Biogen Inc.
InstitutionPersonal Cfo Solutions, Llc
Latest Disclosed Ownership2,362 shares
Latest Disclosed Value $ 433,025
Personal Cfo Solutions, Llc reports 1.71% decrease in ownership of IDP / Biogen Inc.

On April 30, 2026 - Personal Cfo Solutions, Llc filed a 13F-HR form disclosing ownership of 2,362 shares of Biogen Inc. (DE:IDP) valued at $366,700 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 22, 2026 disclosing 2,403 shares of Biogen Inc.. This represents a change in shares of -1.71% during the quarter. The current value of the position is $403,666 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)
2026-04-30 2026-03-31 13F BIOGEN COM 09062X103 2,362 -41 -1.71 433 2.61 0.0608
2026-01-22 2025-12-31 13F BIOGEN COM 09062X103 2,403 -35 -1.44 423 23.75 0.0671
2025-11-10 2025-09-30 13F BIOGEN COM 09062X103 2,438 421 20.87 342 34.78 0.0599
2025-08-12 2025-06-30 13F BIOGEN COM 09062X103 2,017 -10 -0.49 253 -8.66 0.0469
2025-04-30 2025-03-31 13F BIOGEN COM 09062X103 2,027 482 31.20 277 17.37 0.0563
2025-02-07 2024-12-31 13F BIOGEN COM 09062X103 1,545 -37 -2.34 236 -22.88 0.0465
2024-11-14 2024-09-30 13F BIOGEN COM 09062X103 1,582 243 18.15 307 -1.29 0.0428
2024-08-09 2024-06-30 13F BIOGEN COM 09062X103 1,339 160 13.57 310 22.05 0.0477
2024-05-13 2024-03-31 13F BIOGEN COM 09062X103 1,179 155 15.14 254 -3.79 0.0397
2024-02-13 2023-12-31 13F BIOGEN COM 09062X103 1,024 16 1.59 265 1.93 0.0459
2023-11-13 2023-09-30 13F BIOGEN COM 09062X103 1,008 29 2.96 259 -6.83 0.0512
2023-08-10 2023-06-30 13F BIOGEN COM 09062X103 979 -39 -3.83 279 -1.77 0.0566
2023-05-09 2023-03-31 13F BIOGEN COM 09062X103 1,018 67 7.05 283 7.60 0.0584
2023-02-14 2022-12-31 13F BIOGEN COM 09062X103 951 92 10.71 263 14.85 0.0557
2022-11-01 2022-09-30 13F BIOGEN COM 09062X103 859 859 229 0.0575
2022-02-11 2021-12-31 13F BIOGEN COM 09062X103 0 -2,829 -100.00 0 -100.00
2021-11-18 2021-09-30 13F BIOGEN COM 09062X103 2,829 -22 -0.77 801 -18.84 0.1641
2021-07-22 2021-06-30 13F BIOGEN COM 09062X103 2,851 187 7.02 987 32.48 0.2021
2021-04-21 2021-03-31 13F BIOGEN COM 09062X103 2,664 392 17.25 745 33.99 0.1610
2021-02-09 2020-12-31 13F BIOGEN COM 09062X103 2,272 6 0.26 556 55,500.00 0.1376
2020-11-02 2020-09-30 13F BIOGEN COM 09062X103 2,266 -75 -3.20 1 -99.84 0.3333
2020-08-03 2020-06-30 13F BIOGEN COM 09062X103 2,341 149 6.80 626 -9.80 0.1853
2020-04-30 2020-03-31 13F BIOGEN COM 09062X103 2,192 28 1.29 694 8.10 0.2492
2020-02-13 2019-12-31 13F BIOGEN COM 09062X103 2,164 2,164 642 0.1839
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.