Biogen Inc.
MX ˙ BMV ˙ US09062X1037
SecurityMX:BIIB / Biogen Inc.
InstitutionHancock Whitney Corp
Latest Disclosed Ownership1,735 shares
Latest Disclosed Value $ 327,830
Hancock Whitney Corp reports 0.29% decrease in ownership of BIIB / Biogen Inc.

On May 15, 2026 - Hancock Whitney Corp filed a 13F-HR form disclosing ownership of 1,735 shares of Biogen Inc. (MX:BIIB) valued at $327,830 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,740 shares of Biogen Inc.. This represents a change in shares of -0.29% 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)
2026-05-15 2026-03-31 13F BIOGEN COM 09062X103 1,735 -5 -0.29 328 6.86 0.0057
2026-02-17 2025-12-31 13F BIOGEN COM 09062X103 1,740 0 0.00 306 25.93 0.0055
2025-11-17 2025-09-30 13F BIOGEN COM 09062X103 1,740 -21 -1.19 244 9.95 0.0044
2025-08-14 2025-06-30 13F BIOGEN COM 09062X103 1,761 81 4.82 221 -3.49 0.0042
2025-05-15 2025-03-31 13F BIOGEN COM 09062X103 1,680 -130 -7.18 230 -17.03 0.0075
2025-02-14 2024-12-31 13F BIOGEN COM 09062X103 1,810 -283 -13.52 277 -31.85 0.0088
2024-11-13 2024-09-30 13F BIOGEN COM 09062X103 2,093 -15 -0.71 406 -17.01 0.0131
2024-08-13 2024-06-30 13F BIOGEN COMMON STOCK 09062X103 2,108 -39 -1.82 489 5.63 0.0166
2024-05-16 2024-03-31 13F BIOGEN COMMON STOCK 09062X103 2,147 120 5.92 463 -11.83 0.0160
2024-02-14 2023-12-31 13F BIOGEN COM 09062X103 2,027 -141 -6.50 525 -5.92 0.0195
2023-11-13 2023-09-30 13F BIOGEN COM 09062X103 2,168 -51 -2.30 557 -11.87 0.0230
2023-11-13 2023-06-30 13F/A-1 BIOGEN COM 09062X103 2,219 -540 -19.57 632 -17.60 0.0248
2023-08-10 2023-06-30 13F BIOGEN COM 09062X103 2,219 -540 1 0.0248
2023-11-13 2023-03-31 13F/A-2 BIOGEN COM 09062X103 2,759 76 2.83 767 3.23 0.0308
2023-05-16 2023-03-31 13F/A-1 BIOGEN COM 09062X103 2,759 76 1 0.0164
2023-05-15 2023-03-31 13F BIOGEN COM 09062X103 2,683 0 1 0.0154
2023-11-13 2022-12-31 13F/A-1 BIOGEN COM 09062X103 2,683 -221 -7.61 743 -4.13 0.0287
2023-02-03 2022-12-31 13F BIOGEN COM 09062X103 2,683 -221 1 0.0287
2022-10-26 2022-09-30 13F BIOGEN COM 09062X103 2,904 641 28.33 775 67.75 0.0331
2022-08-08 2022-06-30 13F BIOGEN COM 09062X103 2,263 10 0.44 462 -2.53 0.0185
2022-05-12 2022-03-31 13F BIOGEN COM 09062X103 2,253 -286 -11.26 474 -22.17 0.0161
2022-01-25 2021-12-31 13F BIOGEN COM 09062X103 2,539 -386 -13.20 609 -26.45 0.0191
2021-11-04 2021-09-30 13F BIOGEN COM 09062X103 2,925 -567 -16.24 828 -31.51 0.0289
2021-08-09 2021-06-30 13F BIOGEN COM 09062X103 3,492 -25,237 -87.85 1,209 -84.96 0.0386
2021-05-14 2021-03-31 13F BIOGEN COM 09062X103 28,729 3,774 15.12 8,037 31.54 0.2728
2021-02-09 2020-12-31 13F BIOGEN COM 09062X103 24,955 -6,768 -21.33 6,110 -32.10 0.2040
2020-11-05 2020-09-30 13F BIOGEN COM 09062X103 31,723 -1,285 -3.89 8,999 1.89 0.3323
2020-07-30 2020-06-30 13F BIOGEN COM 09062X103 33,008 5,600 20.43 8,832 1.86 0.3385
2020-05-08 2020-03-31 13F BIOGEN COM 09062X103 27,408 11,975 77.59 8,671 89.32 0.3400
2020-02-06 2019-12-31 13F BIOGEN COM 09062X103 15,433 61 0.40 4,580 27.97 0.1476
2019-10-29 2019-09-30 13F BIOGEN COM 09062X103 15,372 -1,264 -7.60 3,579 -8.02 0.1173
2019-08-29 2019-06-30 13F BIOGEN COM 09062X103 16,636 -986 -5.60 3,891 -6.60 0.1245
2019-05-13 2019-03-31 13F BIOGEN COM 09062X103 17,622 -131 -0.74 4,166 -22.01 0.1336
2019-02-14 2018-12-31 13F BIOGEN COM 09062X103 17,753 -477 -2.62 5,342 -17.08 0.1805
2018-11-14 2018-09-30 13F BIOGEN COM 09062X103 18,230 18,230 6,442 0.1823
2015-11-16 2015-09-30 13F BIOGEN COM 09062X103 0 -7,690 -100.00 0 -100.00
2015-08-13 2015-06-30 13F BIOGEN COM 09062X103 7,690 0 0.00 3,247 0.00 0.1239
2015-05-14 2015-03-31 13F BIOGEN COM 09062X103 7,690 7,690 3,247 0.1239
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.