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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
1 Wuxi Pharmatech Inc ADR 52,500 1,935 0.45%
2 Walgreens 70,500 4,655 1.07%
3 WELLCARE HEALTH PLANS INC 51,500 3,271 0.75%
4 VERTEX PHARMACEUTICALS INC 16,000 1,132 0.26%
5 VALEANT PHARMACEUTICALS INTL 53,000 6,987 1.61%
6 UNIVERSAL HLTH SVCS INC 45,000 3,693 0.85%
7 UNITEDHEALTH GROUP INC 181,000 14,840 3.42%
8 ULTRAGENYX PHARMACEUTICAL INC COM 51,500 2,518 0.58%
9 THORATEC LABS CORP 401,000 14,360 3.31%
10 THERMO FISHER SCIENTIFIC INC 107,250 12,896 2.97%
11 TESARO INCORPORATED 129,500 3,818 0.88%
12 TEAM HEALTH HOLDINGS INC 121,250 5,426 1.25%
13 STERICYCLE INC 31,000 3,522 0.81%
14 SELECT SECTOR SPDR TR 200,000 11,698 2.70%
15 Receptos Inc 50,000 2,097 0.48%
16 RTI SURGICAL HOLDINGS INC COM 686,382 2,800 0.65%
17 REGENERON PHARMACEUTICALS 7,500 2,252 0.52%
18 PUMA BIOTECHNOLOGY 3,728 388 0.09%
19 PROTHENA CORP PLC 65,000 2,490 0.57%
20 PHARMACYCLICS INC 31,500 3,157 0.73%
21 PERRIGO CO PLC 28,500 4,408 1.02%
22 PACIRA PHARMACEUTICALS INC 61,000 4,269 0.98%
23 OREXIGEN THERAPEUTICS INC COM 830,000 5,395 1.24%
24 National Australia Bank ADR 53,000 2,588 0.60%
25 NOVAVAX INC COM 325,000 1,472 0.34%
26 NEUROCRINE BIOSCIE COM USD0.001 300,000 4,830 1.11%
27 MEDNAX INC 32,500 2,014 0.46%
28 MEDICINES CO 120,000 3,410 0.79%
29 MCKESSON CORP 91,500 16,156 3.73%
30 KINDRED BIOSCIENCES INC 92,500 1,714 0.40%
31 JOHNSON & JOHNSON 250,000 24,558 5.66%
32 JAZZ PHARMACEUTICALS PLC 19,750 2,739 0.63%
33 INTUITIVE SURGICAL INC 18,500 8,103 1.87%
34 INTERMUNE INC 410,000 13,723 3.17%
35 INTERCEPT PHARMACEUTICALS INCORPORATED 13,000 4,287 0.99%
36 INNOVIVA INC COM 83,250 2,576 0.59%
37 INFINITY PHARMACEUTICALS INC 97,500 1,159 0.27%
38 INCYTE CORP 63,500 3,399 0.78%
39 ILLUMINA INC 42,500 6,318 1.46%
40 Heartware International, Inc. 50,000 4,689 1.08%
41 HUMANA INC 65,500 7,383 1.70%
42 HCA HOLDINGS INC 67,000 3,518 0.81%
43 GW PHARMACEUTICALS PLC 17,750 1,054 0.24%
44 GILEAD SCIENCES INC 331,000 23,455 5.41%
45 FOREST LABS INC COM 54,000 4,983 1.15%
46 FLAMEL TECHNOLOGIES SA SPONSORED ADR 750,000 10,050 2.32%
47 FIVE PRIME THERAPEUTICS INC 175,000 3,441 0.79%
48 FEI COMPANY 27,500 2,833 0.65%
49 EXELIXIS INC 249,000 881 0.20%
50 ENVISION HEALTHCARE HLDGS INC 137,500 4,652 1.07%
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