Rock Springs Capital Management LP Q1 2021 Filing

Filed May 17, 2021

Portfolio Value

$4.6B

Holdings

151

Report Date

Q1 2021

Filing Type

13F-HR

All Holdings (151 positions)

#	Stock	Shares	Value	% Portfolio
101	BAXBAXTER INTL INC	140,000	$11.8M	0.26%
102	ANABANAPTYSBIO INC	535,232	$11.5M	0.25%
103	STTKSHATTUCK LABS INC	388,499	$11.4M	0.25%
104	CNMDCONMED CORP	85,085	$11.1M	0.24%
105	TARAPROTARA THERAPEUTICS INC	689,942	$10.9M	0.24%
106	FGENEURFIBROGEN INC	312,687	$10.9M	0.24%
107	—TRANSLATE BIO INC	649,900	$10.7M	0.23%
108	NGMUSDNGM BIOPHARMACEUTICALS INC	364,800	$10.6M	0.23%
109	—PROMETHEUS BIOSCIENCES INC	574,858	$10.5M	0.23%
110	CGENCOMPUGEN LTD	1,219,488	$10.5M	0.23%
111	290ACHINOOK THERAPEUTICS INC	673,049	$10.5M	0.23%
112	XENEXENON PHARMACEUTICALS INC	572,500	$10.2M	0.22%
113	—KINNATE BIOPHARMA INC	326,386	$10.2M	0.22%
114	—FUSION PHARMACEUTICALS INC	948,327	$10.2M	0.22%
115	AUPHAURINIA PHARMACEUTICALS INC	781,569	$10.1M	0.22%
116	AM6AMICUS THERAPEUTICS INC	1,012,506	$10.0M	0.22%
117	—ORION ACQUISITION CORP	1,000,000	$10.0M	0.22%
118	DSGNDESIGN THERAPEUTICS INC	327,250	$9.8M	0.21%
119	NRIXNURIX THERAPEUTICS INC	310,950	$9.7M	0.21%
120	LEGNLEGEND BIOTECH CORP	312,618	$9.1M	0.20%
121	RLAYRELAY THERAPEUTICS INC	252,127	$8.7M	0.19%
122	ADAPYADAPTIMMUNE THERAPEUTICS PLC	1,545,000	$8.2M	0.18%
123	WSTWEST PHARMACEUTICAL SVSC INC	28,500	$8.0M	0.18%
124	BCELATRECA INC	453,930	$7.0M	0.15%
125	—CHIASMA INC	2,174,583	$6.8M	0.15%
126	TREURTRILLIUM THERAPEUTICS INC	620,800	$6.7M	0.15%
127	—ACELRX PHARMACEUTICALS INC	3,785,457	$6.4M	0.14%
128	FATEFATE THERAPEUTICS INC	70,000	$5.8M	0.13%
129	—CONSTELLATION PHARMCETICLS I	232,000	$5.4M	0.12%
130	DC4DEXCOM INC	15,000	$5.4M	0.12%
131	—PHASEBIO PHARMACEUTICALS INC	1,553,974	$5.4M	0.12%
132	GRTXGALERA THERAPEUTICS INC	568,252	$5.0M	0.11%
133	NUVBNUVATION BIO INC	402,088	$4.2M	0.09%
134	RPRXROYALTY PHARMA PLC	80,000	$3.5M	0.08%
135	TVTX 2.5 09/15/25RETROPHIN INC	3,250,000	$3.4M	0.07%
136	—BCLS ACQUISITION CORP	309,000	$3.3M	0.07%
137	PSTXUSDPOSEIDA THERAPEUTICS INC	289,754	$2.8M	0.06%
138	CNTBCONNECT BIOPHARMA HLDGS LTD	119,114	$2.2M	0.05%
139	—LIFESCI ACQUISITION II CORP	206,200	$2.1M	0.05%
140	—FS DEVELOPMENT CORP II	209,332	$2.1M	0.05%
141	—EUCRATES BIOMEDICAL ACQU COR	206,000	$2.1M	0.05%
142	—TURMERIC ACQUISITION CORP	206,000	$2.1M	0.04%
143	—JIYA ACQUISITION CORP	206,200	$2.0M	0.04%
144	—POPULATION HEALTH INVS CO IN	201,044	$2.0M	0.04%
145	MLTXHELIX ACQUISITION CORP	154,500	$1.6M	0.03%
146	—THERAVANCE BIOPHARMA INC	1,500,000	$1.5M	0.03%
147	—RADIUS HEALTH INC	1,500,000	$1.4M	0.03%
148	NBIX 2.25 05/15/24NEUROCRINE BIOSCIENCES INC	1,000,000	$1.4M	0.03%
149	—PACIRA BIOSCIENCES INC	1,000,000	$1.2M	0.03%
150	NVRO 2.75 04/01/25NEVRO CORP	500,000	$771K	0.02%
151	NUVB/WSNUVATION BIO INC	134,028	$358K	0.01%

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