“…When ownership of shares is widely dispersed, increasing ownership concentration is likely to mitigate the free-rider problem and enhance firm efficiency. However, when the fractional ownership of the largest shareholder exceeds a certain threshold, increasing ownership concentration raises the likelihood of tunneling and decreases firm efficiency (Lin et al, 2009). But when the largest shareholder' holding reaches a high level, the incentive to divert the firm's wealth may decrease, since the net gain of 'tunneling' is no longer significant (Liu & Lu, 2007).…”