Key legal question
Whether the cantonal court's finding that the prospectus was not the natural cause of the appellants' share purchases was arbitrary.
Extracted holding
No. The court could conclude, without arbitrariness, that neither appellant proved direct causation and that the market sentiment, not the prospectus, drove the purchases.
Extracted reasoning
The first appellant only skimmed the prospectus and relied mainly on price momentum and market euphoria; the second appellant had not read it at all and bought much later, after further adverse signals and a steep price rise.