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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 JOHNSON & JOHNSON 250,000 24,558 5.66%
2 GILEAD SCIENCES INC 331,000 23,455 5.41%
3 ABBVIE INC 360,000 18,504 4.27%
4 BIOGEN INC 55,250 16,899 3.90%
5 MCKESSON CORP 91,500 16,156 3.73%
6 UNITEDHEALTH GROUP INC 181,000 14,840 3.42%
7 THORATEC LABS CORP 401,000 14,360 3.31%
8 AMGEN INC 115,000 14,184 3.27%
9 INTERMUNE INC 410,000 13,723 3.17%
10 THERMO FISHER SCIENTIFIC INC 107,250 12,896 2.97%
11 SELECT SECTOR SPDR TR 200,000 11,698 2.70%
12 ALLERGAN PLC 56,250 11,579 2.67%
13 CELGENE CORP 77,000 10,749 2.48%
14 FLAMEL TECHNOLOGIES SA SPONSORED ADR 750,000 10,050 2.32%
15 BRISTOL MYERS SQUIBB CO 185,500 9,637 2.22%
16 AGILENT TECHNOLOGIES INC 155,000 8,668 2.00%
17 CVS HEALTH CORP 113,000 8,459 1.95%
18 COOPER COS INC 60,500 8,310 1.92%
19 INTUITIVE SURGICAL INC 18,500 8,103 1.87%
20 HUMANA INC 65,500 7,383 1.70%
21 ALEXION PHARMACEUTIC 48,500 7,378 1.70%
22 VALEANT PHARMACEUTICALS INTL 53,000 6,987 1.61%
23 ILLUMINA INC 42,500 6,318 1.46%
24 TEAM HEALTH HOLDINGS INC 121,250 5,426 1.25%
25 OREXIGEN THERAPEUTICS INC COM 830,000 5,395 1.24%
26 CARDINAL HEALTH INC 76,000 5,318 1.23%
27 FOREST LABS INC COM 54,000 4,983 1.15%
28 NEUROCRINE BIOSCIE COM USD0.001 300,000 4,830 1.11%
29 Heartware International, Inc. 50,000 4,689 1.08%
30 Walgreens 70,500 4,655 1.07%
31 ENVISION HEALTHCARE HLDGS INC 137,500 4,652 1.07%
32 PERRIGO CO PLC 28,500 4,408 1.02%
33 INTERCEPT PHARMACEUTICALS INCORPORATED 13,000 4,287 0.99%
34 PACIRA PHARMACEUTICALS INC 61,000 4,269 0.98%
35 TESARO INCORPORATED 129,500 3,818 0.88%
36 UNIVERSAL HLTH SVCS INC 45,000 3,693 0.85%
37 STERICYCLE INC 31,000 3,522 0.81%
38 HCA HOLDINGS INC 67,000 3,518 0.81%
39 FIVE PRIME THERAPEUTICS INC 175,000 3,441 0.79%
40 MEDICINES CO 120,000 3,410 0.79%
41 INCYTE CORP 63,500 3,399 0.78%
42 COVANCE INC 32,500 3,377 0.78%
43 WELLCARE HEALTH PLANS INC 51,500 3,271 0.75%
44 PHARMACYCLICS INC 31,500 3,157 0.73%
45 ATHENA HEALTH INC. 19,500 3,125 0.72%
46 CHARLES RIV LABS INTL INC 49,500 2,987 0.69%
47 DICERNA PHARMACEUTICALS INC 105,000 2,966 0.68%
48 CHINA CORD BLOOD CORP 717,500 2,870 0.66%
49 FEI COMPANY 27,500 2,833 0.65%
50 RTI SURGICAL HOLDINGS INC COM 686,382 2,800 0.65%
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