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Ghost Tree Capital’s Biogen BIIB Stock Holding History

Ghost Tree Capital’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
2022
Q4 		– Sell
-3,750
Closed -$1M – 39
2022
Q3 		$1M Buy
+3,750
New +$796K 0.41% 43
2021
Q3 		– Sell
-32,500
Closed -$11.3M – 61
2021
Q2 		$11.3M Buy
32,500
+12,500
+63% +$3.79M 3.52% 12
2021
Q1 		$5.59M Buy
20,000
+17,800
+809% +$4.8M 1.57% 24
2020
Q4 		$539K Sell
2,200
-2,000
-48% -$516K 0.13% 43
2020
Q3 		$1.19M Buy
+4,200
New +$1.17M 0.4% 39
2020
Q2 		– Sell
-3,250
Closed -$1.03M – 46
2020
Q1 		$1.03M Buy
+3,250
New +$986K 0.45% 45
2017
Q1 		– Sell
-15,000
Closed -$4.25M – 71
2016
Q4 		$4.25M Hold
15,000
– – 1.29% 38
2016
Q3 		$4.7M Sell
15,000
-15,000
-50% -$4.44M 1.35% 46
2016
Q2 		$7.25M Buy
+30,000
New +$7.91M 3.43% 17
2016
Q1 		– Sell
-25,000
Closed -$7.66M – 56
2015
Q4 		$7.66M Buy
+25,000
New +$7.18M 3.17% 14
2015
Q3 		– Sell
-30,000
Closed -$12.1M – 80
2015
Q2 		$12.1M Buy
+30,000
New +$12M 4.04% 3
2014
Q2 		– Sell
-6,471
Closed -$1.98M – 58
2014
Q1 		$1.98M Sell
6,471
-9,529
-60% -$3.02M 2.04% 30
2013
Q4 		$4.47M Buy
+16,000
New +$4.14M 4.12% 9

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