Palo Alto Investors

Palo Alto Investors as of Dec. 31, 2011

Portfolio Holdings for Palo Alto Investors

Palo Alto Investors holds 39 positions in its portfolio as reported in the December 2011 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
ViroPharma Incorporated 12.4 $110M 4.0M 27.39
Cyberonics 10.4 $93M 2.8M 33.50
Auxilium Pharmaceuticals 6.9 $62M 3.1M 19.93
Questcor Pharmaceuticals 6.3 $56M 1.3M 41.58
Medicis Pharmaceutical Corporation 5.7 $51M 1.5M 33.25
United Therapeutics Corporation (UTHR) 5.4 $48M 1.0M 47.25
BioMarin Pharmaceutical (BMRN) 4.9 $44M 1.3M 34.38
Cubist Pharmaceuticals 4.9 $43M 1.1M 39.62
Momenta Pharmaceuticals 4.7 $42M 2.4M 17.39
Onyx Pharmaceuticals 4.3 $39M 879k 43.95
STAAR Surgical Company (STAA) 4.1 $36M 3.5M 10.49
ArthroCare Corporation 3.9 $35M 1.1M 31.68
Abiomed 3.3 $29M 1.6M 18.47
AMAG Pharmaceuticals 3.0 $27M 1.4M 18.91
Savient Pharmaceuticals 3.0 $26M 12M 2.23
Sequenom 2.7 $24M 5.4M 4.45
Amicus Therapeutics (FOLD) 2.2 $20M 5.8M 3.44
Medivation 1.8 $16M 355k 46.11
Qlt 1.2 $11M 1.5M 7.20
EnerNOC 1.0 $9.0M 826k 10.87
Northern Oil & Gas 0.9 $8.5M 355k 23.98
Contango Oil & Gas Company 0.8 $7.6M 130k 58.18
InterMune 0.8 $6.8M 542k 12.60
Rigel Pharmaceuticals (RIGL) 0.8 $6.8M 861k 7.89
Vanda Pharmaceuticals (VNDA) 0.7 $6.1M 1.3M 4.76
Energy Recovery (ERII) 0.7 $5.8M 2.2M 2.58
Sonde Resources 0.7 $5.8M 2.2M 2.60
Alimera Sciences 0.4 $3.5M 2.8M 1.25
NxStage Medical 0.4 $3.3M 187k 17.78
Aegerion Pharmaceuticals 0.4 $3.3M 195k 16.74
BroadVision 0.3 $3.1M 284k 10.94
Theratechnologies 0.3 $2.7M 992k 2.73
Savient Pharmaceuticals note 0.3 $2.6M 6.0M 0.43
NuVasive 0.2 $2.1M 166k 12.59
pSivida 0.1 $916k 826k 1.11
Insmed (INSM) 0.1 $812k 266k 3.05
Protalix BioTherapeutics 0.1 $702k 142k 4.93
Cytokinetics 0.1 $686k 714k 0.96
Orion Energy Systems (OESX) 0.0 $344k 117k 2.95