Rock Springs Capital Management LP Q1 2017 Filing

Filed May 15, 2017

Portfolio Value

$1.7T

Holdings

140

Report Date

Q1 2017

Filing Type

13F-HR

All Holdings (140 positions)

#StockSharesValue% PortfolioType
101
CARDIOME PHARMA CORP
1,200,000$3.6B0.21%
102
CGENCOMPUGEN LTD
825,000$3.5B0.20%
103
PROTEOSTASIS THERAPEUTICS IN
450,000$3.5B0.20%
104
PBYIPUMA BIOTECHNOLOGY INC
94,500$3.5B0.20%
105
MDGLMADRIGAL PHARMACEUTICALS INC
225,000$3.5B0.20%
106
RIGLUSDRIGEL PHARMACEUTICALS INC
1,000,000$3.3B0.19%
107
INVAINNOVIVA INC
235,000$3.3B0.19%
108
GKOSGLAUKOS CORP
62,500$3.2B0.18%
109
HRCHILL ROM HLDGS INC
45,000$3.2B0.18%
110
ITCIEURINTRA CELLULAR THERAPIES INC
190,000$3.1B0.18%
111
GENOCEA BIOSCIENCES INC
480,000$2.9B0.17%
112
BLUEBIRD BIO INC
30,500$2.8B0.16%
113
CARAEURCARA THERAPEUTICS INC
150,000$2.8B0.16%
114
ZBHZIMMER BIOMET HLDGS INC
21,100$2.6B0.15%
115
OTICEUROTONOMY INC
210,000$2.6B0.15%
116
DBV TECHNOLOGIES S A
73,000$2.6B0.15%
117
MCRB1EURSERES THERAPEUTICS INC
220,000$2.5B0.14%
118
CIDARA THERAPEUTICS INC
300,000$2.3B0.14%
119
NEURODERM LTD
84,079$2.2B0.13%
120
HQYHEALTHEQUITY INC
50,000$2.1B0.12%
121
SCYXEURSCYNEXIS INC
760,000$2.1B0.12%
122
THERAVANCE BIOPHARMA INC
1,500,000$1.9B0.11%
123
MYOVANT SCIENCES LTD
150,000$1.8B0.10%
124
NIVALIS THERAPEUTICS INC
600,000$1.8B0.10%
125
NVCRNOVOCURE LTD
214,316$1.7B0.10%
126
ATYR PHARMA INC
475,000$1.7B0.10%
127
NEWLINK GENETICS CORP
67,071$1.6B0.09%
128
EGALET CORP
300,000$1.5B0.09%
129
WRIGHT MED GROUP INC
1,000,000$1.2B0.07%
130
NVAXNOVAVAX INC
820,000$1.1B0.06%
131
PRGOPERRIGO CO PLC
15,600$1.0B0.06%
132
DVAXDYNAVAX TECHNOLOGIES CORP
165,000$982.0M0.06%
133
INFIQINFINITY PHARMACEUTICALS INC
270,000$872.0M0.05%
134
CHIASMA INC
492,500$837.0M0.05%
135
BHCVALEANT PHARMACEUTICALS INTL
66,400$732.0M0.04%
136
TANDEM DIABETES CARE INC
595,000$714.0M0.04%
137
OREXIGEN THERAPEUTICS INC
165,300$569.0M0.03%
138
ANTHERA PHARMACEUTICALS INC
1,296,568$552.0M0.03%
139
CERULEAN PHARMA INC
625,000$508.0M0.03%
140
DIMENSION THERAPEUTICS INC
271,370$475.0M0.03%
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