TCM
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Tekla Capital Management’s Biogen BIIB Stock Holding History

Quarter Market Value Status Shares Shares
Change %
Trade Value Portfolio Weight Portfolio Position
2023
Q2
$70.6M Buy
247,943
+7,017
+3% +$2M 2.76% 10
2023
Q1
$67M Buy
240,926
+45,496
+23% +$12.6M 2.55% 12
2022
Q4
$54.1M Buy
195,430
+49,991
+34% +$13.8M 2.04% 15
2022
Q3
$38.8M Buy
145,439
+9,800
+7% +$2.62M 1.59% 21
2022
Q2
$27.7M Hold
135,639
1.09% 27
2022
Q1
$28.6M Hold
135,639
1% 28
2021
Q4
$32.5M Sell
135,639
-98,214
-42% -$23.6M 1.05% 27
2021
Q3
$66.2M Buy
233,853
+24,729
+12% +$7M 2.13% 12
2021
Q2
$72.4M Sell
209,124
-37,720
-15% -$13.1M 2.35% 11
2021
Q1
$69.1M Hold
246,844
2.38% 10
2020
Q4
$60.4M Buy
246,844
+33,091
+15% +$8.1M 2.12% 12
2020
Q3
$60.6M Sell
213,753
-19,846
-8% -$5.63M 2.27% 11
2020
Q2
$62.5M Sell
233,599
-99,136
-30% -$26.5M 2.38% 9
2020
Q1
$105M Buy
332,735
+47,609
+17% +$15.1M 4.76% 5
2019
Q4
$84.6M Buy
285,126
+27,187
+11% +$8.07M 3.2% 7
2019
Q3
$60.1M Buy
257,939
+33,249
+15% +$7.74M 2.62% 10
2019
Q2
$52.5M Sell
224,690
-89,588
-29% -$21M 2.14% 10
2019
Q1
$74.3M Sell
314,278
-80,624
-20% -$19.1M 3.02% 9
2018
Q4
$119M Buy
394,902
+3,500
+0.9% +$1.05M 5.09% 3
2018
Q3
$138M Sell
391,402
-12,553
-3% -$4.44M 5.02% 3
2018
Q2
$117M Buy
403,955
+25,252
+7% +$7.33M 4.45% 3
2018
Q1
$104M Sell
378,703
-66,904
-15% -$18.3M 4.03% 5
2017
Q4
$142M Sell
445,607
-43,997
-9% -$14M 5.48% 4
2017
Q3
$153M Sell
489,604
-40,170
-8% -$12.6M 5.48% 3
2017
Q2
$144M Buy
529,774
+44,800
+9% +$12.2M 5.33% 3
2017
Q1
$133M Sell
484,974
-52,376
-10% -$14.3M 5.14% 3
2016
Q4
$152M Buy
537,350
+55,317
+11% +$15.7M 6.49% 3
2016
Q3
$151M Buy
482,033
+31,500
+7% +$9.86M 5.8% 3
2016
Q2
$109M Hold
450,533
4.45% 3
2016
Q1
$117M Hold
450,533
4.99% 3
2015
Q4
$138M Sell
450,533
-16,650
-4% -$5.1M 5.01% 3
2015
Q3
$136M Buy
467,183
+113,950
+32% +$33.3M 4.9% 3
2015
Q2
$143M Buy
353,233
+13,750
+4% +$5.55M 5.16% 3
2015
Q1
$143M Buy
339,483
+12,200
+4% +$5.15M 5.68% 3
2014
Q4
$111M Buy
327,283
+140,500
+75% +$47.7M 5.2% 3
2014
Q3
$61.8M Buy
186,783
+12,800
+7% +$4.23M 2.9% 8
2014
Q2
$54.9M Hold
173,983
5.04% 3
2014
Q1
$53.2M Sell
173,983
-18,000
-9% -$5.51M 5.32% 5
2013
Q4
$53.7M Hold
191,983
5.64% 4
2013
Q3
$46.2M Hold
191,983
5.14% 4
2013
Q2
$41.3M Buy
+191,983
New +$41.3M 5.62% 4