Palo Alto Investors

Palo Alto Investors as of March 31, 2012

Portfolio Holdings for Palo Alto Investors

Palo Alto Investors holds 41 positions in its portfolio as reported in the March 2012 quarterly 13F filing

Company (Ticker) Portfolio Weight Valued At Change in Shares Share Count Share Price
ViroPharma Incorporated 12.8 $117M 3.9M 30.07
Cyberonics 11.6 $105M 2.8M 38.13
Medicis Pharmaceutical Corporation 6.4 $58M 1.5M 37.59
Auxilium Pharmaceuticals 6.1 $56M 3.0M 18.57
Questcor Pharmaceuticals 5.4 $49M 1.3M 37.62
United Therapeutics Corporation (UTHR) 5.3 $48M 1.0M 47.13
Cubist Pharmaceuticals 5.2 $48M 1.1M 43.25
BioMarin Pharmaceutical (BMRN) 4.8 $44M 1.3M 34.25
Abiomed 4.7 $43M 1.9M 22.19
STAAR Surgical Company (STAA) 4.1 $37M 3.4M 10.83
Momenta Pharmaceuticals 3.8 $35M 2.3M 15.32
Onyx Pharmaceuticals 3.5 $32M 839k 37.68
Amicus Therapeutics (FOLD) 3.3 $30M 5.7M 5.28
Savient Pharmaceuticals 2.9 $27M 12M 2.18
Sequenom 2.5 $23M 5.7M 4.07
ArthroCare Corporation 2.5 $23M 863k 26.85
AMAG Pharmaceuticals 2.5 $22M 1.4M 15.93
InterMune 1.7 $16M 1.1M 14.67
Medivation 1.2 $11M 144k 74.72
Alimera Sciences 1.2 $11M 3.2M 3.40
Qlt 1.1 $11M 1.5M 7.00
Northern Oil & Gas 0.8 $7.1M 342k 20.74
Rigel Pharmaceuticals (RIGL) 0.8 $7.0M 870k 8.05
Contango Oil & Gas Company 0.7 $6.7M 114k 58.91
Energy Recovery (ERII) 0.7 $6.4M 2.8M 2.30
Vanda Pharmaceuticals (VNDA) 0.7 $6.1M 1.3M 4.79
EnerNOC 0.7 $6.0M 830k 7.20
Sonde Resources 0.5 $4.6M 1.9M 2.44
Dendreon Corporation 0.5 $4.3M 408k 10.65
NxStage Medical 0.4 $3.6M 189k 19.27
NuVasive 0.3 $2.8M 167k 16.84
Aegerion Pharmaceuticals 0.3 $2.7M 198k 13.83
Savient Pharmaceuticals note 0.3 $2.5M 6.0M 0.42
Orion Energy Systems (OESX) 0.3 $2.4M 1.0M 2.38
pSivida 0.2 $1.5M 826k 1.86
Theratechnologies 0.1 $1.2M 606k 2.03
Insmed (INSM) 0.1 $967k 266k 3.63
Protalix BioTherapeutics 0.1 $907k 142k 6.37
Cytokinetics 0.1 $821k 714k 1.15
Vertex Pharmaceuticals Incorporated (VRTX) 0.0 $139k 3.4k 40.88
Align Technology 0.0 $115k 4.2k 27.46