Koeppel, ChristianChristianKoeppel2023-04-132023-04-132021-09-20https://www.alexandria.unisg.ch/handle/20.500.14171/109927enEDIS-5120shrinkagesentiment risk premiumdiversificationAsset pricingestimation errorportfolio optimizationShrinkageaveraginginvestor sentimentbehavioral financefinancial marketsAktienbewertungAnlageverhaltenSentimentindikatorRisikoprämiePortfolio SelectionEssays on Asset Pricing and Portfolio Optimizationdoctoral thesis