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Avidity Partners Management’s Biogen BIIB Stock Holding History

Avidity Partners Management’s Portfolio BIIB Stock Details BIIB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2023
Q4 		– Sell
-115,400
Closed -$29.7M – 77
2023
Q3 		$29.7M Sell
115,400
-58,600
-34% -$15.7M 1.19% 39
2023
Q2 		$49.6M Buy
174,000
+45,200
+35% +$13.5M 1.73% 20
2023
Q1 		$35.8M Buy
+128,800
New +$35.6M 1.19% 34
2022
Q4 		– Sell
-600,000
Closed -$160M – 90
2022
Q3 		$160M Buy
600,000
+159,434
+36% +$33.9M 3.48% 7
2022
Q2 		$89.8M Buy
440,566
+75,566
+21% +$15.4M 2.06% 22
2022
Q1 		$76.9M Buy
+365,000
New +$79.4M 1.71% 23
2021
Q3 		– Sell
-183,900
Closed -$63.7M – 108
2021
Q2 		$63.7M Buy
+183,900
New +$55.7M 1.72% 19
2020
Q4 		– Sell
-315,100
Closed -$81.3M – 103
2020
Q3 		$89.4M Buy
+315,100
New +$87.9M 4.81% 6
2020
Q2 		– Sell
-62,000
Closed -$19.6M – 61
2020
Q1 		$19.6M Buy
+62,000
New +$18.8M 2.81% 11

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