Twin Tree Management’s Alexion Pharmaceuticals ALXN Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2021 Q1	–	Sell	-36,182	Closed	-$5.65M	–	1906
2020 Q4	$5.65M	Buy	36,182 +16,274	+82%	+$2.09M	0.23%	587
2020 Q3	$2.28M	Sell	19,908 -38,750	-66%	-$4.18M	0.13%	742
2020 Q2	$6.58M	Sell	58,658 -111,039	-65%	-$11.8M	0.33%	577
2020 Q1	$15.2M	Buy	169,697 +154,085	+987%	+$15.1M	0.73%	233
2019 Q4	$1.69M	Buy	+15,612	New	+$1.67M	0.11%	761
2019 Q3	–	Hold	0	–	–	–	1774
2019 Q2	–	Sell	-3,605	Closed	-$465K	–	1808
2019 Q1	$487K	Sell	3,605 -58,625	-94%	-$7.29M	0.04%	953
2018 Q4	$6.06M	Buy	62,230 +53,905	+648%	+$6.37M	0.36%	450
2018 Q3	$1.16M	Sell	8,325 -4,395	-35%	-$551K	0.1%	693
2018 Q2	$1.58M	Buy	+12,720	New	+$1.49M	0.1%	689
2018 Q1	–	Sell	-78,195	Closed	-$9.35M	–	1503
2017 Q4	$9.35M	Buy	78,195 +55,573	+246%	+$6.77M	0.8%	252
2017 Q3	$3.17M	Buy	+22,622	New	+$3.07M	0.39%	481
2017 Q2	–	Sell	-2,129	Closed	-$248K	–	1332
2017 Q1	$258K	Buy	+2,129	New	+$274K	0.03%	824
2016 Q4	–	Hold	0	–	–	–	1501
2016 Q3	–	Sell	-24,119	Closed	-$3.1M	–	1463
2016 Q2	$2.82M	Buy	+24,119	New	+$3.42M	0.58%	392
2016 Q1	–	Sell	-6,951	Closed	-$1.33M	–	1657
2015 Q4	$1.33M	Buy	6,951 +3,450	+99%	+$603K	0.32%	550
2015 Q3	$548K	Buy	+3,501	New	+$639K	0.18%	751
2015 Q2	–	Sell	-6,281	Closed	-$1.08M	–	1560
2015 Q1	$1.09M	Buy	6,281 +906	+17%	+$164K	0.4%	567
2014 Q4	$995K	Buy	5,375 +2,641	+97%	+$489K	0.31%	590
2014 Q3	$453K	Sell	2,734 -4,911	-64%	-$806K	0.15%	727
2014 Q2	$1.2M	Buy	+7,645	New	+$1.21M	0.41%	543
2014 Q1	–	Sell	-2,123	Closed	-$338K	–	1212
2013 Q4	$282K	Buy	+2,123	New	+$255K	0.13%	800