Rock Springs Capital Management’s bluebird bio BLUE Stock Holding History

Quarter	Market Value	Status	Shares	Shares Change %	Trade Value	Portfolio Weight	Portfolio Position
2020 Q1	–	Sell	-35,000	Closed	-$3.07M	–	132
2019 Q4	$3.07M	Sell	35,000 -12,000	-26%	-$1.05M	0.1%	112
2019 Q3	$4.32M	Hold	47,000	–	–	0.17%	113
2019 Q2	$5.98M	Buy	47,000 +2,000	+4%	+$254K	0.22%	93
2019 Q1	$7.08M	Hold	45,000	–	–	0.27%	94
2018 Q4	$4.46M	Sell	45,000 -7,500	-14%	-$744K	0.21%	101
2018 Q3	$7.67M	Buy	52,500 +7,500	+17%	+$1.1M	0.28%	97
2018 Q2	$7.06M	Hold	45,000	–	–	0.27%	102
2018 Q1	$7.68M	Hold	45,000	–	–	0.33%	93
2017 Q4	$8.02M	Buy	45,000 +10,000	+29%	+$1.78M	0.36%	85
2017 Q3	$4.81M	Buy	35,000 +3,000	+9%	+$412K	0.22%	104
2017 Q2	$3.36M	Buy	32,000 +1,500	+5%	+$158K	0.17%	110
2017 Q1	$2.77M	Buy	30,500 +2,000	+7%	+$182K	0.16%	112
2016 Q4	$1.76M	Buy	28,500 +8,500	+43%	+$524K	0.12%	115
2016 Q3	$1.36M	Hold	20,000	–	–	0.09%	129
2016 Q2	$866K	Hold	20,000	–	–	0.06%	133
2016 Q1	$850K	Hold	20,000	–	–	0.07%	126
2015 Q4	$1.28M	Sell	20,000 -25,000	-56%	-$1.61M	0.1%	113
2015 Q3	$3.85M	Hold	45,000	–	–	0.31%	96
2015 Q2	$7.58M	Buy	45,000 +20,000	+80%	+$3.37M	0.55%	67
2015 Q1	$3.02M	Hold	25,000	–	–	0.28%	88
2014 Q4	$2.29M	Buy	+25,000	New	+$2.29M	0.27%	83