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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 (2015Q3)
Original 13F HR (0001172661-15-002063) filed in 2015.11.16
#
Name
Shares
Value ($)
%
Options
Notes
1 BIODEL INC 4,000,000 1,760 0.14%
2 RTI SURGICAL HOLDINGS INC COM 1,860,000 10,565 0.86%
3 OREXIGEN THERAPEUTICS INC COM 1,650,000 3,482 0.28%
4 CARDIOME PHARMA CORP 1,190,000 10,044 0.82%
5 ACHILLION PHARMACEUTICALS IN 1,125,000 7,774 0.63%
6 CASTLIGHT HEALTH INC COM CL B 1,000,000 4,200 0.34%
7 COLLEGIUM PHARMACEUTICAL INC COM 994,400 21,986 1.78%
8 CHINA CORD BLOOD CORP 880,000 5,298 0.43%
9 ACADIA COMPANY COM 812,000 53,811 4.37%
10 THERAPEUTICSMD INC 775,000 4,542 0.37%
11 PFIZER INC 760,000 23,872 1.94%
12 ADAPTIMMUNE THERAPEUTICS PLC 756,100 9,051 0.73%
13 ABBVIE INC 746,423 40,613 3.30%
14 NOVAVAX INC COM 715,000 5,055 0.41%
15 INOVALON HLDGS INC COM CL A 685,000 14,269 1.16%
16 RETROPHIN INC 683,900 13,856 1.12%
17 ARDELYX INC COM 681,500 11,776 0.96%
18 WRIGHT MEDICAL GROUP N.V. 660,000 13,457 1.09%
19 GENOCEA BIOSCIENCES INC 650,000 4,453 0.36%
20 CERULEAN PHARMA INC 625,000 2,288 0.19%
21 Theravance Biopharma Inc 602,500 6,621 0.54%
22 MEDICINES CO 595,000 22,586 1.83%
23 ENDOCHOICE HLDGS INC 576,000 6,543 0.53%
24 ENVISION HEALTHCARE HLDGS INC 570,000 20,970 1.70%
25 RADIUS HEALTH INCORPORATED COM NEW 560,000 38,814 3.15%
26 XENOPORT INC 555,000 1,926 0.16%
27 TANDEM DIABETES CARE INC COM 542,500 4,779 0.39%
28 NOVADAQ TECHNOLOGIES INC 540,000 5,632 0.46%
29 ST JUDE MED INC 530,000 33,438 2.71%
30 COMPUGEN LTD 525,000 2,714 0.22%
31 CHIASMA INC 522,500 10,387 0.84%
32 INVITAE CORP 510,000 3,682 0.30%
33 SPARK THERAPEUTICS INCORPORATED 500,000 20,865 1.69%
34 HCA HOLDINGS INC 490,500 37,945 3.08%
35 Nivalis Therapeutics Inc 489,000 6,342 0.51%
36 ARATANA THERAPEUTICS INC 485,000 4,103 0.33%
37 SCYNEXIS INC 470,000 3,422 0.28%
38 AMICUS THERAPEUTICS INC COM 455,000 6,365 0.52%
39 ADURO BIOTECH INC 415,000 8,039 0.65%
40 ANTHERA PHARMACEUTICALS I 400,000 2,436 0.20%
41 Life Technologies Corp 388,996 3,991 0.32%
42 AETNA INC NEW 386,000 42,232 3.43%
43 NEUROCRINE BIOSCIE COM USD0.001 374,000 14,881 1.21%
44 ASSEMBLY BIOSCIENCES INC 371,000 3,547 0.29%
45 INSMED INC 365,000 6,778 0.55%
46 CONNECTURE INC 365,000 1,664 0.14%
47 HEALTHSOUTH CORP 337,500 12,950 1.05%
48 ADVAXIS INC COM NEW 337,000 3,448 0.28%
49 TEVA PHARMACEUTICAL INDS LTD 325,000 18,350 1.49%
50 ADR - Nabriva Therapeutics AG- Usd 324,400 3,082 0.25%
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