Rock Springs Capital Management LP Q4 2019 Filing

Filed February 14, 2020

Portfolio Value

$3.2B

Holdings

130

Report Date

Q4 2019

Filing Type

13F-HR

All Holdings (130 positions)

#	Stock	Shares	Value	% Portfolio
101	NGMUSDNGM BIOPHARMACEUTICALS INC	351,100	$6.5M	0.21%
102	AGLEUSDAEGLEA BIOTHERAPEUTICS INC	800,000	$6.1M	0.19%
103	INSM 1.75 01/15/25INSMED INC	6,000,000	$5.8M	0.18%
104	—CHIASMA INC	1,160,000	$5.8M	0.18%
105	HCATHEALTH CATALYST INC	160,000	$5.6M	0.18%
106	TXG10X GENOMICS INC	72,500	$5.5M	0.17%
107	—RTI SURGICAL HOLDINGS INC	1,950,000	$5.3M	0.17%
108	SPROSPERO THERAPEUTICS INC	525,000	$5.0M	0.16%
109	AKROAKERO THERAPEUTICS INC	225,000	$5.0M	0.16%
110	—GLOBAL CORD BLOOD CORPORATIO	925,000	$4.6M	0.15%
111	—GAMIDA CELL LTD	1,000,000	$4.3M	0.14%
112	—BLUEBIRD BIO INC	35,000	$3.1M	0.10%
113	ACRSACLARIS THERAPEUTICS INC	1,600,000	$3.0M	0.10%
114	—OBSEVA SA	789,480	$3.0M	0.10%
115	—NABRIVA THERAPEUTICS PLC	2,100,000	$2.8M	0.09%
116	MGNXMACROGENICS INC	230,000	$2.5M	0.08%
117	ANABANAPTYSBIO INC	135,000	$2.2M	0.07%
118	—FIVE PRIME THERAPEUTICS INC	400,000	$1.8M	0.06%
119	—THERAVANCE BIOPHARMA INC	1,500,000	$1.6M	0.05%
120	NBIX 2.25 05/15/24NEUROCRINE BIOSCIENCES INC	1,000,000	$1.5M	0.05%
121	—PARATEK PHARMACEUTICALS INC	375,000	$1.5M	0.05%
122	—RADIUS HEALTH INC	1,500,000	$1.3M	0.04%
123	—PACIRA BIOSCIENCES	1,000,000	$1.0M	0.03%
124	ADAPYADAPTIMMUNE THERAPEUTICS PLC	800,000	$960K	0.03%
125	—DERMIRA INC	1,000,000	$925K	0.03%
126	CRVSCORVUS PHARMACEUTICALS INC	150,000	$816K	0.03%
127	BMY-RBRISTOL MYERS SQUIBB CO	185,150	$557K	0.02%
128	APLTAPPLIED THERAPEUTICS INC	20,315	$554K	0.02%
129	PFEPFIZER INC	10,400	$407K	0.01%
130	CVETUSDCOVETRUS INC	20,683	$273K	0.01%

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