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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 OREXIGEN THERAPEUTICS INC COM 830,000 5,395 1.24%
2 FLAMEL TECHNOLOGIES SA SPONSORED ADR 750,000 10,050 2.32%
3 CHINA CORD BLOOD CORP 717,500 2,870 0.66%
4 RTI SURGICAL HOLDINGS INC COM 686,382 2,800 0.65%
5 ENTEROMEDICS INC 650,000 1,183 0.27%
6 INTERMUNE INC 410,000 13,723 3.17%
7 THORATEC LABS CORP 401,000 14,360 3.31%
8 ABBVIE INC 360,000 18,504 4.27%
9 GILEAD SCIENCES INC 331,000 23,455 5.41%
10 NOVAVAX INC COM 325,000 1,472 0.34%
11 NEUROCRINE BIOSCIE COM USD0.001 300,000 4,830 1.11%
12 AVANIR PHARMACEUTICALS INC CL 300,000 1,101 0.25%
13 JOHNSON & JOHNSON 250,000 24,558 5.66%
14 EXELIXIS INC 249,000 881 0.20%
15 SELECT SECTOR SPDR TR 200,000 11,698 2.70%
16 BRISTOL MYERS SQUIBB CO 185,500 9,637 2.22%
17 UNITEDHEALTH GROUP INC 181,000 14,840 3.42%
18 FIVE PRIME THERAPEUTICS INC 175,000 3,441 0.79%
19 AGILENT TECHNOLOGIES INC 155,000 8,668 2.00%
20 ENVISION HEALTHCARE HLDGS INC 137,500 4,652 1.07%
21 TESARO INCORPORATED 129,500 3,818 0.88%
22 TEAM HEALTH HOLDINGS INC 121,250 5,426 1.25%
23 MEDICINES CO 120,000 3,410 0.79%
24 AMGEN INC 115,000 14,184 3.27%
25 CVS HEALTH CORP 113,000 8,459 1.95%
26 THERMO FISHER SCIENTIFIC INC 107,250 12,896 2.97%
27 DICERNA PHARMACEUTICALS INC 105,000 2,966 0.68%
28 CASTLIGHT HEALTH INC COM CL B 100,000 2,122 0.49%
29 INFINITY PHARMACEUTICALS INC 97,500 1,159 0.27%
30 KINDRED BIOSCIENCES INC 92,500 1,714 0.40%
31 MCKESSON CORP 91,500 16,156 3.73%
32 INNOVIVA INC COM 83,250 2,576 0.59%
33 CELGENE CORP 77,000 10,749 2.48%
34 CARDINAL HEALTH INC 76,000 5,318 1.23%
35 Arrowhead Pharma Inc 75,000 1,232 0.28%
36 Walgreens 70,500 4,655 1.07%
37 HCA HOLDINGS INC 67,000 3,518 0.81%
38 HUMANA INC 65,500 7,383 1.70%
39 PROTHENA CORP PLC 65,000 2,490 0.57%
40 INCYTE CORP 63,500 3,399 0.78%
41 PACIRA PHARMACEUTICALS INC 61,000 4,269 0.98%
42 COOPER COS INC 60,500 8,310 1.92%
43 CONCERT PHARMACEUTICALS INCORPORATED 59,553 801 0.18%
44 ALLERGAN PLC 56,250 11,579 2.67%
45 BIOGEN INC 55,250 16,899 3.90%
46 FOREST LABS INC COM 54,000 4,983 1.15%
47 VALEANT PHARMACEUTICALS INTL 53,000 6,987 1.61%
48 National Australia Bank ADR 53,000 2,588 0.60%
49 Wuxi Pharmatech Inc ADR 52,500 1,935 0.45%
50 WELLCARE HEALTH PLANS INC 51,500 3,271 0.75%
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