Rock Springs Capital Management’s Medicines Co MDCO Stock Holding History

Quarter	Market Value	Status	Shares	Shares Change %	Trade Value	Portfolio Weight	Portfolio Position
2020 Q1	–	Sell	-307,699	Closed	-$26.1M	–	144
2019 Q4	$26.1M	Sell	307,699 -492,301	-62%	-$41.8M	0.83%	50
2019 Q3	$40M	Hold	800,000	–	–	1.59%	15
2019 Q2	$29.2M	Buy	800,000 +70,600	+10%	+$2.57M	1.06%	29
2019 Q1	$20.4M	Buy	729,400 +2,500	+0.3%	+$69.9K	0.79%	46
2018 Q4	$13.9M	Buy	726,900 +36,900	+5%	+$706K	0.66%	50
2018 Q3	$20.6M	Hold	690,000	–	–	0.75%	44
2018 Q2	$25.3M	Hold	690,000	–	–	0.97%	32
2018 Q1	$22.7M	Hold	690,000	–	–	0.97%	35
2017 Q4	$18.9M	Hold	690,000	–	–	0.86%	38
2017 Q3	$25.6M	Sell	690,000 -4,446	-0.6%	-$165K	1.18%	24
2017 Q2	$26.4M	Sell	694,446 -5,554	-0.8%	-$211K	1.33%	21
2017 Q1	$34.2M	Buy	700,000 +500	+0.1%	+$24.5K	1.98%	11
2016 Q4	$23.7M	Buy	699,500 +18,500	+3%	+$628K	1.59%	21
2016 Q3	$25.7M	Buy	681,000 +500	+0.1%	+$18.9K	1.61%	20
2016 Q2	$22.9M	Buy	680,500 +48,500	+8%	+$1.63M	1.69%	17
2016 Q1	$20.1M	Buy	632,000 +7,000	+1%	+$222K	1.68%	16
2015 Q4	$23.3M	Buy	625,000 +30,000	+5%	+$1.12M	1.77%	16
2015 Q3	$22.6M	Buy	595,000 +249,500	+72%	+$9.47M	1.83%	11
2015 Q2	$9.89M	Buy	345,500 +45,500	+15%	+$1.3M	0.72%	45
2015 Q1	$8.41M	Buy	300,000 +53,700	+22%	+$1.5M	0.79%	43
2014 Q4	$6.82M	Buy	246,300 +98,050	+66%	+$2.71M	0.8%	47
2014 Q3	$3.31M	Buy	148,250 +13,150	+10%	+$294K	0.51%	62
2014 Q2	$3.93M	Buy	135,100 +15,100	+13%	+$439K	0.7%	53
2014 Q1	$3.41M	Buy	120,000 +87,500	+269%	+$2.49M	0.79%	40
2013 Q4	$1.26M	Buy	+32,500	New	+$1.26M	0.45%	55