Moving beyond previous studies investigating the consequences of corporate venturing investment activities, this study explores the antecedents of corporate venturing activities by applying behavioral, agency, and institutional theories. Empirical results obtained from listed Taiwanese high-tech firms from 2000-2006 demonstrate that social aspiration and strategic isomorphism are significant driving forces behind firm corporate venturing investment activities. This study elucidates the antecedents of corporate entrepreneurial behaviors, and provides implications and avenues for future studies