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