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Tekla Capital Management LLC > BIIB

DateNameTickerSharesChangeValueChangePrice
06/30/2023BIOGEN INC.BIIB247,9437,01770,626,564,0003,641,908,000$284,850.00
03/31/2023BIOGEN INC.BIIB240,92695,48766,984,656,00066,945,824,000$278,030.00
09/30/2022BIOGEN INC.BIIB145,4399,80038,832,00011,170,000$267.00
06/30/2022BIOGEN INC.BIIB135,639027,662,000-904,000$203.94
03/31/2022BIOGEN INC.BIIB135,639028,566,000-3,977,000$210.60
12/31/2021BIOGEN INC.BIIB135,639-98,21432,543,000-33,635,000$239.92
09/30/2021BIOGEN INC.BIIB233,85324,72966,178,000-6,235,000$282.99
06/30/2021BIOGEN INC.BIIB209,124-37,72072,413,0003,358,000$346.27
03/31/2021BIOGEN INC.BIIB246,844069,055,0008,613,000$279.75
12/31/2020BIOGEN INC.BIIB246,84433,09160,442,000-195,000$244.86
09/30/2020BIOGEN INC.BIIB213,753-19,84660,637,000-1,862,000$283.68
06/30/2020BIOGEN INC.BIIB233,599-99,13662,499,000-42,772,000$267.55
03/31/2020BIOGEN INC.BIIB332,73547,609105,271,00020,666,000$316.38
12/31/2019BIOGEN INC.BIIB285,12627,18784,605,00024,552,000$296.73
09/30/2019BIOGEN INC.BIIB257,93933,24960,053,0007,505,000$232.82
06/30/2019BIOGEN INC.BIIB224,690-89,58852,548,000-21,741,000$233.87
03/31/2019BIOGEN INC.BIIB314,278-80,62474,289,000-44,545,000$236.38
12/31/2018BIOGEN INC.BIIB394,9023,500118,834,000-19,452,000$300.92
09/30/2018BIOGEN INC.BIIB391,402-12,553138,286,00021,042,000$353.31
06/30/2018BIOGEN INC.BIIB403,95525,252117,244,00013,548,000$290.24
03/31/2018BIOGEN INC.BIIB378,703-66,904103,696,000-38,261,000$273.82
12/31/2017BIOGEN INC.BIIB445,607-43,997141,957,000-11,348,000$318.57
09/30/2017BIOGEN INC.BIIB489,604-40,170153,305,0009,546,000$313.12
06/30/2017BIOGEN INC.BIIB529,77444,800143,759,00011,157,000$271.36
03/31/2017BIOGEN INC.BIIB484,974-52,376132,602,000-19,780,000$273.42
12/31/2016BIOGEN INC.BIIB537,35055,317152,382,0001,491,000$283.58
09/30/2016BIOGEN INC.BIIB482,03331,500150,891,00012,870,000$313.03
06/30/2016BIOGEN INC.BIIB450,5330108,948,000-8,335,000$241.82
03/31/2016BIOGEN INC.BIIB450,5330117,283,000-20,738,000$260.32
12/31/2015BIOGEN INC.BIIB450,533263,750138,021,00076,231,000$306.35
09/30/2015BIOGEN INC.BIIB467,183280,400136,329,00074,539,000$291.81
06/30/2015BIOGEN INC.BIIB353,233166,450142,685,00080,895,000$403.94
03/31/2015BIOGEN INC.BIIB339,483152,700143,343,00081,553,000$422.24
12/31/2014BIOGEN INC.BIIB327,283140,500111,096,00049,306,000$339.45
09/30/2014BIOGEN INC.BIIB186,783186,78361,790,00061,790,000$330.81
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