Castleark Management’s Biogen BIIB Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2020
Q2
Sell
2020
Q1
$693K Buy
2019
Q1
Sell
2018
Q4
$6.25M Sell
2018
Q3
$13.4M Buy
2018
Q2
$4.77M Sell
2018
Q1
$4.54M Sell
2017
Q4
$5.52M Sell
2017
Q3
$13.1M Sell
2017
Q2
$22.3M Sell
2017
Q1
$33M Buy
2016
Q4
$29.6M Sell
2016
Q3
$36.4M Buy
2016
Q2
$16.1M Buy
2015
Q4
Sell
2015
Q3
$6.71M Sell
2015
Q2
$28.7M Buy
2014
Q4
Sell
2014
Q3
$41.2M Buy
2014
Q2
Sell
2014
Q1
$41.2M Sell
2013
Q4
$60.6M Buy