Stock return comovement analysis is important to financial analysts, decision makers, and academic researchers, in many financial implications, such as, portfolio management, style investing, and market risk detecting. This paper examines firms' social media, in particular, microblogging...

Linguistic specificity effectively reduces barriers to information cognition, increasing the efficiency of information acquisition, integration and processing. Combining the psycholinguistics theory of the concreteness effect with asset-pricing theory, we determine that linguistic specificity in...