百健公司
MX ˙ BMV ˙ US09062X1037
SecurityMX:BIIB / Biogen Inc.
InstitutionBogart Wealth, LLC
Latest Disclosed Ownership215 shares
Latest Disclosed Value $ 39,416
Bogart Wealth, LLC reports 57.76% decrease in ownership of BIIB / Biogen Inc.

On April 28, 2026 - Bogart Wealth, LLC filed a 13F-HR form disclosing ownership of 215 shares of Biogen Inc. (MX:BIIB) valued at $39,416 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 509 shares of Biogen Inc.. This represents a change in shares of -57.76% during the quarter.

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)
2026-04-28 2026-03-31 13F BIOGEN INC COM Stock 09062X103 215 -294 -57.76 39 -56.18 0.0015
2026-01-30 2025-12-31 13F BIOGEN INC COM Stock 09062X103 509 196 62.62 90 106.98 0.0036
2025-10-27 2025-09-30 13F BIOGEN INC COM Stock 09062X103 313 104 49.76 44 65.38 0.0018
2025-07-30 2025-06-30 13F BIOGEN INC COM Stock 09062X103 209 0 0.00 26 -7.14 0.0011
2025-05-02 2025-03-31 13F BIOGEN INC COM Stock 09062X103 209 0 0.00 29 -9.68 0.0013
2025-01-30 2024-12-31 13F BIOGEN INC COM Stock 09062X103 209 0 0.00 32 -22.50 0.0015
2024-10-23 2024-09-30 13F BIOGEN INC COM Stock 09062X103 209 0 0.00 41 -16.67 0.0019
2024-07-31 2024-06-30 13F BIOGEN INC COM Stock 09062X103 209 -8 -3.69 48 4.35 0.0025
2024-04-25 2024-03-31 13F BIOGEN INC COM Stock 09062X103 217 -11 -4.82 47 -22.03 0.0024
2024-02-07 2023-12-31 13F BIOGEN INC COM Stock 09062X103 228 0 0.00 59 1.72 0.0033
2023-10-30 2023-09-30 13F BIOGEN INC COM Stock 09062X103 228 8 3.64 59 -6.45 0.0036
2023-07-31 2023-06-30 13F BIOGEN INC COM Stock 09062X103 220 20 10.00 63 12.73 0.0040
2023-04-21 2023-03-31 13F BIOGEN INC COM Stock 09062X103 200 0 0.00 56 0.00 0.0037
2023-02-06 2022-12-31 13F BIOGEN INC COM Stock 09062X103 200 0 0.00 55 3.77 0.0039
2022-11-03 2022-09-30 13F BIOGEN INC COM Stock 09062X103 200 0 0.00 53 29.27 0.0044
2022-07-22 2022-06-30 13F BIOGEN INC COM Stock 09062X103 200 184 1,150.00 41 1,266.67 0.0036
2022-04-22 2022-03-31 13F BIOGEN INC COM Stock 09062X103 16 -7 -30.43 3 -50.00 0.0003
2022-01-19 2021-12-31 13F BIOGEN INC COM Stock 09062X103 23 18 360.00 6 500.00 0.0005
2021-10-15 2021-09-30 13F BIOGEN INC COM Stock 09062X103 5 -10 -66.67 1 -80.00 0.0001
2021-08-06 2021-06-30 13F BIOGEN INC COM Stock 09062X103 15 -1 -6.25 5 25.00 0.0005
2021-04-16 2021-03-31 13F BIOGEN INC COM Stock 09062X103 16 4 33.33 4 100.00 0.0006
2021-01-14 2020-12-31 13F BIOGEN INC COM Stock 09062X103 12 -2,270 -99.47 2 -99.69 0.0004
2020-10-06 2020-09-30 13F BIOGEN INC COM Stock 09062X103 2,282 440 23.89 647 31.24 0.1436
2020-07-08 2020-06-30 13F BIOGEN INC COM Stock 09062X103 1,842 330 21.83 493 3.14 0.1159
2020-04-20 2020-03-31 13F BIOGEN INC COM Stock 09062X103 1,512 289 23.63 478 31.68 0.1304
2020-02-10 2019-12-31 13F BIOGEN INC COM Stock 09062X103 1,223 66 5.70 363 34.94 0.1160
2019-11-06 2019-09-30 13F/A-1 BIOGEN INC COM Stock 09062X103 1,157 88 8.23 269 7.60 0.1324
2019-10-10 2019-09-30 13F BIOGEN INC COM Stock 09062X103 1,157 88 269 0.1238
2019-07-11 2019-06-30 13F BIOGEN INC COM Stock 09062X103 1,069 266 33.13 250 32.28 0.1511
2019-04-08 2019-03-31 13F BIOGEN INC COM Stock 09062X103 803 803 189 0.0912
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.