This paper examines the effect of insider ownership on corporate value in India for the period of 2000-01 to 2003-04, using 1,833 Bombay Stock Exchange listed firms by investigating the relationship between insider's equity holding and firm value. While the "convergence of interest" or "monitoring" hypothesis predicts a positive relationship, the "entrenchment" hypothesis predicts a negative one. This paper also provides evidence that the relationship between insider shareholding and firm value is not linear in nature and documents a significant non-monotonic relationship between the two. Tobin's Q first increases, then declines and finally rises as ownership by insiders rises. It also confirms that foreign promoter/ collaborator shareholding has a significant positive impact on firm value.