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Institutional Investment Manager
Rock Springs Capital Management LP
Rock Springs Capital Management LP (CIK: 0001595725) incorporated in Delaware, located at 650 South Exeter Street, Baltimore, MD. Institutional holdings reported to the SEC.

Institutional Holdings (2014Q1)
Original 13F HR (0001172661-14-001101) filed in 2014.05.15
#
Name
Shares
Value ($)
%
Options
Notes
51 JAZZ PHARMACEUTICALS PLC 19,750 2,739 0.63%
52 National Australia Bank ADR 53,000 2,588 0.60%
53 INNOVIVA INC COM 83,250 2,576 0.59%
54 ULTRAGENYX PHARMACEUTICAL INC COM 51,500 2,518 0.58%
55 PROTHENA CORP PLC 65,000 2,490 0.57%
56 CERNER CORP 42,000 2,363 0.55%
57 REGENERON PHARMACEUTICALS 7,500 2,252 0.52%
58 CUBIST PHARMACEUTI 30,000 2,195 0.51%
59 CASTLIGHT HEALTH INC COM CL B 100,000 2,122 0.49%
60 Receptos Inc 50,000 2,097 0.48%
61 MEDNAX INC 32,500 2,014 0.46%
62 ADVISORY BRD CO COM 31,075 1,997 0.46%
63 Wuxi Pharmatech Inc ADR 52,500 1,935 0.45%
64 KINDRED BIOSCIENCES INC 92,500 1,714 0.40%
65 ALKERMES PLC 35,500 1,565 0.36%
66 NOVAVAX INC COM 325,000 1,472 0.34%
67 Arrowhead Pharma Inc 75,000 1,232 0.28%
68 ENTEROMEDICS INC 650,000 1,183 0.27%
69 INFINITY PHARMACEUTICALS INC 97,500 1,159 0.27%
70 VERTEX PHARMACEUTICALS INC 16,000 1,132 0.26%
71 AVANIR PHARMACEUTICALS INC CL 300,000 1,101 0.25%
72 GW PHARMACEUTICALS PLC 17,750 1,054 0.24%
73 EXELIXIS INC 249,000 881 0.20%
74 CONCERT PHARMACEUTICALS INCORPORATED 59,553 801 0.18%
75 PUMA BIOTECHNOLOGY 3,728 388 0.09%
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