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Institutional Investment Manager
Palo Alto Investors LP
Palo Alto Investors LP (CIK: 0001306923) incorporated in California, located at 101 University Ave, Palo Alto, CA. Institutional holdings reported to the SEC.

Institutional Holdings (2015Q2)
Original 13F HR (0001306923-15-000019) filed in 2015.08.14
#
Name
Shares
Value ($)
%
Options
Notes
1 UNITED THERAPEUTICS 1,439,928 250,475 11.14%
2 Anacor Pharmaceuticals Inc 3,103,027 240,267 10.68%
3 BIOMARIN 1,660,092 227,067 10.10%
4 CLOVIS ONCOLOGY INC 2,401,117 211,010 9.38%
5 ABIOMED INC 2,742,305 180,252 8.01%
6 AMAG PHARMACEUTICALS INC COM 2,192,141 151,389 6.73%
7 INSMED INC COM PAR .01 4,733,601 115,595 5.14%
8 THORATEC LABS CORP 2,560,303 114,113 5.07%
9 KYTHERA BIOPHARMACEUTICALS I 1,290,292 97,172 4.32%
10 ENDO INTL 864,604 68,866 3.06%
11 WRIGHT MEDICAL GROUP NV 2,056,251 53,997 2.40%
12 VANDA PHARMACEUTICALS INC COM 3,897,408 49,458 2.20%
13 KARYOPHARM THERAPEUTICS INC COM 1,731,530 47,115 2.09%
14 PROTHENA CORP PLC 695,918 36,654 1.63%
15 GILEAD SCIENCES INC 299,500 35,065 1.56%
16 Momenta Pharmaceuticals Inc 1,455,176 33,193 1.48%
17 SEQUENOM INC 10,023,842 30,472 1.35%
18 CELGENE CORP 262,200 30,346 1.35%
19 AMICUS THERAPEUTICS INC 1,974,376 27,937 1.24%
20 STAAR SURGICAL CO 2,642,922 25,531 1.14%
21 LIVANOVA PLC 412,000 24,498 1.09%
22 SHIRE PLC 98,300 23,738 1.06%
23 MEDIVATION INC 180,300 20,590 0.92%
24 ARIAD PHARMACEUTICALS INC 2,231,717 18,456 0.82%
25 Heartware International, Inc. 243,868 17,727 0.79%
26 ZELTIQ AESTHETICS INCORPORATED 568,436 16,752 0.74%
27 RIGEL PHARMACEUTICAL INC 5,176,319 16,616 0.74%
28 INTUITIVE SURGICAL INC 32,350 15,674 0.70%
29 ALIMERA SCIENCES INC 3,013,793 13,894 0.62%
30 EXACT SCIENCES CORP 392,676 11,678 0.52%
31 Orexigen Therapeutics, Inc. 1,931,324 9,560 0.43%
32 ACELRX PHARMACEUTICALS INC 2,135,739 9,056 0.40%
33 IDERA PHARMACEUTICALS INC 1,226,748 4,551 0.20%
34 XOMA CORP DEL 799,000 3,100 0.14%
35 HISTOGENICS CORP 454,545 2,936 0.13%
36 Sunesis Pharmaceuticals I 906,263 2,728 0.12%
37 BIOSPECIFICS TECHNOLOGIES CORP COM 50,436 2,602 0.12%
38 INTREXON CORP 47,100 2,298 0.10%
39 ALIGN TECHNOLOGY INC 27,757 1,741 0.08%
40 EPIZYME INC COM 61,265 1,470 0.07%
41 ALCOBRA LTD 156,588 1,024 0.05%
42 Dicerna Pharmaceuticals 70,706 986 0.04%
43 CYTOKINETICS INC 123,686 831 0.04%
44 MALLINCKRODT PUB LTD CO SHS 3,588 422 0.02%
45 SOPHIRIS BIO INC 191,600 150 0.01%