Rock Springs Capital Management’s Vertex Pharmaceuticals VRTX Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2020 Q4	–	Sell	-9,000	Closed	-$2.45M	–	162
2020 Q3	$2.45M	Sell	9,000 -116,000	-93%	-$32M	0.06%	139
2020 Q2	$36.3M	Hold	125,000	–	–	1%	39
2020 Q1	$29.7M	Sell	125,000 -78,000	-38%	-$17.9M	1.23%	32
2019 Q4	$44.4M	Hold	203,000	–	–	1.4%	16
2019 Q3	$34.4M	Hold	203,000	–	–	1.37%	21
2019 Q2	$37.2M	Hold	203,000	–	–	1.36%	19
2019 Q1	$37.3M	Hold	203,000	–	–	1.45%	15
2018 Q4	$33.6M	Buy	203,000 +7,000	+4%	+$1.21M	1.59%	14
2018 Q3	$37.8M	Buy	196,000 +5,500	+3%	+$979K	1.37%	15
2018 Q2	$32.4M	Buy	190,500 +9,500	+5%	+$1.47M	1.25%	21
2018 Q1	$29.5M	Buy	181,000 +9,750	+6%	+$1.59M	1.26%	22
2017 Q4	$25.7M	Buy	171,250 +19,750	+13%	+$2.92M	1.17%	26
2017 Q3	$23M	Buy	151,500 +22,500	+17%	+$3.39M	1.06%	26
2017 Q2	$16.6M	Buy	129,000 +38,500	+43%	+$4.63M	0.85%	44
2017 Q1	$9.9M	Buy	90,500 +750	+0.8%	+$66K	0.57%	58
2016 Q4	$6.61M	Hold	89,750	–	–	0.44%	65
2016 Q3	$7.83M	Buy	89,750 +4,250	+5%	+$402K	0.49%	58
2016 Q2	$7.36M	Buy	85,500 +1,600	+2%	+$138K	0.55%	57
2016 Q1	$6.67M	Buy	83,900 +11,150	+15%	+$1.01M	0.56%	57
2015 Q4	$9.15M	Buy	72,750 +500	+0.7%	+$60.4K	0.69%	51
2015 Q3	$7.52M	Buy	72,250 +4,250	+6%	+$546K	0.61%	60
2015 Q2	$8.4M	Hold	68,000	–	–	0.61%	60
2015 Q1	$8.02M	Buy	68,000 +5,000	+8%	+$599K	0.75%	46
2014 Q4	$7.48M	Buy	63,000 +5,500	+10%	+$619K	0.88%	41
2014 Q3	$6.46M	Buy	57,500 +11,250	+24%	+$1.07M	1%	33
2014 Q2	$4.38M	Buy	46,250 +30,250	+189%	+$2.12M	0.79%	47
2014 Q1	$1.13M	Sell	16,000 -4,000	-20%	-$317K	0.26%	70
2013 Q4	$1.49M	Buy	+20,000	New	+$1.39M	0.53%	52