百健公司
MX ˙ BMV ˙ US09062X1037
SecurityMX:BIIB / Biogen Inc.
InstitutionMacquarie Group Ltd
Latest Disclosed Ownership8,512 shares
Latest Disclosed Value $ 1,560,505
Macquarie Group Ltd reports 67.77% decrease in ownership of BIIB / Biogen Inc.

On May 15, 2026 - Macquarie Group Ltd filed a 13F-HR form disclosing ownership of 8,512 shares of Biogen Inc. (MX:BIIB) valued at $1,560,505 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 26,409 shares of Biogen Inc.. This represents a change in shares of -67.77% 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 8,512 -17,897 -67.77 1,561 -66.43 0.0073
2026-02-13 2025-12-31 13F BIOGEN COM 09062X103 26,409 -27,352 -50.88 4,648 -38.29 0.0203
2025-11-13 2025-09-30 13F BIOGEN COM 09062X103 53,761 -1,563 -2.83 7,531 8.38 0.0088
2025-08-14 2025-06-30 13F BIOGEN COM 09062X103 55,324 -3,780 -6.40 6,949 -14.09 0.0085
2025-08-14 2025-03-31 13F/A-1 BIOGEN COM 09062X103 59,104 6,144 11.60 8,088 11.85 0.0100
2025-05-15 2025-03-31 13F BIOGEN COM 09062X103 67,359 14,399 6,961 0.0057
2025-02-14 2024-12-31 13F BIOGEN COM 09062X103 52,960 7,297 15.98 7,232 -18.30 0.0088
2024-11-14 2024-09-30 13F BIOGEN COM 09062X103 45,663 -10,166 -18.21 8,852 -31.61 0.0096
2024-08-09 2024-06-30 13F BIOGEN COM 09062X103 55,829 -64,892 -53.75 12,943 -50.28 0.0148
2024-05-14 2024-03-31 13F BIOGEN COM 09062X103 120,721 -134,394 -52.68 26,031 -60.57 0.0295
2024-02-14 2023-12-31 13F BIOGEN COM 09062X103 255,115 -17,992 -6.59 66,016 -5.95 0.0763
2023-11-14 2023-09-30 13F BIOGEN COM 09062X103 273,107 207,708 317.60 70,191 276.80 0.0882
2023-10-27 2023-06-30 13F/A-2 BIOGEN COM 09062X103 65,399 6,059 10.21 18,628 12.91 0.0213
2023-10-12 2023-06-30 13F/A-1 BIOGEN COM 09062X103 65,399 6,059 18,628 0.0187
2023-08-14 2023-06-30 13F BIOGEN COM 09062X103 65,399 6,059 18,628 0.0189
2023-06-01 2023-03-31 13F/A-1 BIOGEN COM 09062X103 59,340 6,358 12.00 16,498 12.45 0.0196
2023-05-15 2023-03-31 13F BIOGEN COM 09062X103 59,340 6,358 16,498 0.0151
2023-02-21 2022-12-31 13F BIOGEN COM 09062X103 52,982 874 1.68 14,672 5.45 0.0173
2022-11-14 2022-09-30 13F BIOGEN COM 09062X103 52,108 329 0.64 13,913 31.75 0.0171
2022-08-17 2022-06-30 13F/A-1 BIOGEN COM 09062X103 51,779 -3,384 -6.13 10,560 -9.10 0.0119
2022-08-15 2022-06-30 13F BIOGEN COM 09062X103 51,779 -3,384 10,560 0.0038
2022-05-16 2022-03-31 13F BIOGEN COM 09062X103 55,163 -1,453 -2.57 11,617 -14.47 0.0088
2022-02-11 2021-12-31 13F Biogen COM 09062X103 56,616 -15,769 -21.78 13,583 -33.69 0.0113
2021-11-12 2021-09-30 13F BIOGEN COM 09062X103 72,385 1,610 2.27 20,485 -16.42 0.0175
2021-08-13 2021-06-30 13F BIOGEN COM 09062X103 70,775 944 1.35 24,508 25.46 0.0201
2021-05-14 2021-03-31 13F BIOGEN COM 09062X103 69,831 44 0.06 19,535 14.32 0.0276
2021-02-16 2020-12-31 13F BIOGEN COM 09062X103 69,787 -706 -1.00 17,088 -14.55 0.0250
2020-11-13 2020-09-30 13F BIOGEN COM 09062X103 70,493 3,025 4.48 19,998 10.79 0.0339
2020-08-11 2020-06-30 13F BIOGEN COM 09062X103 67,468 -66,904 -49.79 18,051 -57.54 0.0311
2020-05-15 2020-03-31 13F BIOGEN COM 09062X103 134,372 3,213 2.45 42,513 9.23 0.0873
2020-03-18 2019-12-31 13F/A-2 BIOGEN COM 09062X103 131,159 -265,824 -66.96 38,920 -57.89 0.0556
2020-02-28 2019-12-31 13F/A-1 BIOGEN COM 09062X103 131,159 0 38,920 0.0562
2020-02-14 2019-12-31 13F BIOGEN COM 09062X103 131,159 -265,824 38,920 48,841.3016
2019-11-14 2019-09-30 13F BIOGEN COM 09062X103 396,983 -27,376 -6.45 92,425 -6.87 0.1549
2019-11-06 2019-06-30 13F/A-2 BIOGEN COM 09062X103 424,359 -66,357 -13.52 99,245 -14.44 0.1674
2019-09-24 2019-06-30 13F/A-1 BIOGEN COM 09062X103 424,359 0 99,245 0.1688
2019-08-14 2019-06-30 13F BIOGEN COM 09062X103 424,359 -66,357 99,245
2019-05-15 2019-03-31 13F BIOGEN COM 09062X103 490,716 -187,375 -27.63 115,997 -43.15 0.1979
2019-02-15 2018-12-31 13F BIOGEN COM 09062X103 678,091 -126,620 -15.73 204,051 -28.23 0.3943
2018-11-15 2018-09-30 13F BIOGEN COM 09062X103 804,711 69,498 9.45 284,312 33.24 0.4632
2019-03-21 2018-06-30 13F/A-1 BIOGEN COM 09062X103 735,213 39,251 5.64 213,388 11.97 0.3679
2018-08-14 2018-06-30 13F BLACK HILLS COM 09062X103 735,213 39,251 213,388
2018-05-11 2018-03-31 13F BIOGEN COM 09062X103 695,962 -32,032 -4.40 190,569 -17.70 0.3473
2018-02-14 2017-12-31 13F BIOGEN COM 09062X103 727,994 29,762 4.26 231,543 5.91 0.4094
2017-11-08 2017-09-30 13F BIOGEN COM 09062X103 698,232 81,495 13.21 218,630 30.64 0.3922
2017-08-14 2017-06-30 13F BIOGEN COM 09062X103 616,737 -41,371 -6.29 167,358 -6.99 0.3060
2017-05-15 2017-03-31 13F BIOGEN COM 09062X103 658,108 -84,461 -11.37 179,940 -14.55 0.3270
2017-03-30 2016-12-31 13F/A-1 Biogen COMMON 09062X103 742,569 -49,551 -6.26 210,578 -15.07 0.4031
2017-02-15 2016-12-31 13F BIOGEN Common Stock 09062X103 742,569 210,578
2016-11-15 2016-09-30 13F BIOGEN Common Stock 09062X103 792,120 -115,233 -12.70 247,957 13.01 0.4770
2016-09-14 2016-06-30 13F/A-1 BIOGEN Common Stock 09062X103 907,353 -90,405 -9.06 219,416 -15.52 0.4309
2016-08-15 2016-06-30 13F BIOGEN Common Stock 09062X103 907,353 219,416
2016-05-16 2016-03-31 13F BIOGEN Common Stock 09062X103 997,758 122,830 14.04 259,737 -3.10 0.5234
2016-02-16 2015-12-31 13F BIOGEN Common Stock 09062X103 874,928 107,311 13.98 268,035 19.66 0.5503
2015-11-16 2015-09-30 13F BIOGEN Common Stock 09062X103 767,617 102,047 15.33 223,998 -16.68 0.4803
2015-08-21 2015-06-30 13F/A-1 BIOGEN Common Stock 09062X103 665,570 242,333 57.26 268,850 50.44 0.5322
2015-08-14 2015-06-30 13F BIOGEN Common Stock 09062X103 665,570 268,850
2015-05-18 2015-03-31 13F BIOGEN Common Stock 09062X103 423,237 341,417 417.28 178,707 543.43 0.3507
2015-02-17 2014-12-31 13F Biogen Idec Common Stock 09062X103 81,820 2,940 3.73 27,774 6.44 0.0573
2014-11-14 2014-09-30 13F Biogen Idec COM 09062X103 78,880 -320 -0.40 26,094 4.49 0.0560
2014-08-14 2014-06-30 13F Biogen Idec COMMON 09062X103 79,200 1,040 1.33 24,973 4.46 0.0557
2014-05-15 2014-03-31 13F Biogen Idec Common Stock 09062X103 78,160 3,570 4.79 23,907 14.58 0.0413
2014-02-14 2013-12-31 13F Biogen Idec Common Stock 09062X103 74,590 11,280 17.82 20,864 36.88 0.0374
2013-11-14 2013-09-30 13F BIOGEN IDEC INC COM Common Stock 09062X103 63,310 1,500 2.43 15,242 14.59 0.0298
2013-08-16 2013-06-30 13F/A-1 BIOGEN IDEC INC COM Common 09062X103 61,810 61,810 13,301 0.0290
2013-08-14 2013-06-30 13F BIOGEN IDEC INC COM Common 09062X103 61,810 13,301 0.0290
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.