Palo Alto Investors

Palo Alto Investors as of June 30, 2012

Portfolio Holdings for Palo Alto Investors

Palo Alto Investors holds 37 positions in its portfolio as reported in the June 2012 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
Onyx Pharmaceuticals 16.9 $156M 2.3M 66.45
Cyberonics 11.5 $106M 2.3M 44.94
ViroPharma Incorporated 9.2 $85M 3.6M 23.70
Auxilium Pharmaceuticals 7.2 $67M 2.5M 26.89
Medicis Pharmaceutical Corporation 5.7 $53M 1.5M 34.15
United Therapeutics Corporation (UTHR) 5.5 $51M 1.0M 49.38
Abiomed 4.3 $40M 1.7M 22.82
Questcor Pharmaceuticals 4.3 $40M 744k 53.24
BioMarin Pharmaceutical (BMRN) 3.8 $35M 886k 39.58
Cubist Pharmaceuticals 3.8 $35M 917k 37.91
Amicus Therapeutics (FOLD) 3.4 $31M 5.6M 5.50
Sequenom 3.0 $27M 6.7M 4.06
AMAG Pharmaceuticals 2.9 $27M 1.7M 15.40
STAAR Surgical Company (STAA) 2.9 $27M 3.4M 7.77
ArthroCare Corporation 2.7 $25M 863k 29.28
Momenta Pharmaceuticals 2.7 $25M 1.9M 13.47
InterMune 2.3 $21M 1.8M 11.95
Qlt 1.2 $11M 1.5M 7.62
Alimera Sciences 1.2 $11M 3.6M 2.99
Rigel Pharmaceuticals (RIGL) 0.9 $8.1M 870k 9.30
Savient Pharmaceuticals 0.7 $6.3M 12M 0.54
Vanda Pharmaceuticals (VNDA) 0.6 $5.6M 1.3M 4.40
Energy Recovery (ERII) 0.5 $4.2M 1.8M 2.40
NuVasive 0.5 $4.2M 167k 25.36
Conceptus 0.4 $3.9M 197k 19.82
Savient Pharmaceticals, Inc. 3% note 0.4 $3.9M 7.7M 0.50
Dendreon Corporation 0.3 $3.0M 408k 7.40
Aegerion Pharmaceuticals 0.3 $2.9M 198k 14.84
pSivida 0.2 $1.9M 814k 2.31
Northern Oil & Gas 0.2 $1.8M 112k 15.94
Sonde Resources 0.1 $1.2M 678k 1.76
Cytokinetics 0.1 $1.0M 1.6M 0.64
Insmed (INSM) 0.1 $868k 266k 3.26
NxStage Medical 0.1 $740k 44k 16.77
Theratechnologies 0.0 $281k 351k 0.80
Align Technology 0.0 $140k 4.2k 33.43
Vertex Pharmaceuticals Incorporated (VRTX) 0.0 $39k 700.00 55.71