Online retailers provide a substantial amount of product information to their customers. The information includes not only product features and customer reviews, but also information on alternative products that may better fit a consumer's needs. The systematic provision of information on...

Online brokerages and message board providers have introduced community stock sentiments to influence investors in their trading decisions. Community stock sentiments reflect the average opinions of investors to either buy (bullish) or sell (bearish). However, it is unclear if these sentiments...

Much has been discussed in popular press about virtual communities being melting pots of ideas and opinions. However, little is known as to how individuals actually interact in virtual communities and to what degree interactions occur between individuals with different ideas and opinions, which...

Using data from a new field experiment in South Korea, we study how information from virtual communities such as stock message boards influences investors' trading decisions and investment performance. Motivated by recent studies in psychology, we conjecture that investors would use message...