Insider ownership and firm value in New Zealand

The relationship between insider stock ownership and firm value is examined for a sample of publicly traded companies in New Zealand. Results in this study confirm earlier findings of a curvilinear relationship reported for larger markets. Insider ownership and firm value are positively related for ownership levels below 14% and above 40% and inversely related at intermediate levels of ownership. These results are fairly robust to different measures of firm performance (Tobin's q, market to book ratio and return on equity) and to several different estimation techniques such as ordinary least squares, two stage least squares, seemingly unrelated regressions and fixed effects regressions on panel data over 1994–1998. Findings in this study contribute to the growing body of international evidence that the non-linear cubic relationship between insider ownership and firm value is robust to differences in governance structures across markets.