We examine the change in the value of the underlying stock associated with long-term option introduction. Analysis of the abnormal returns associated with LEAPS (Long-Term Equity Anticipation Security) introductions indicates a decline in firm value even after we control for the endogenous nature of the listing decision. However, the evidence does not support previously-offered explanations for the price change associated with option introductions. In particular, we do not find the predicted relations between the cumulative abnormal returns and variables associated with loosening of short sale constraints such as beta, proxies for the dispersion in investor beliefs, and change in relative short interest.

We analyze data provided by NASDAQ to examine how quote aggressiveness affects dealer market share and whether the practice of internalization mitigates the impact of quote aggressiveness. Our empirical results show that although internalization does not reduce the impact of price aggressiveness on dealer market share, it mitigates the impact of size aggressiveness. This result suggests that although internalization may not affect the dealer's incentive to post aggressive prices, it may reduce the incentive to post large depths. We find that aggressive quotes are more effective in raising dealer market share in stocks with a less competitive (more concentrated) market structure. Our results also show that the effective spread is wider (narrower) for stocks with a smaller price (size) elasticity of dealer market share.