Firms are more complicated than standard principal-agent theory allows : firms have assets-in-place; firms endure through time, allowing for the possibility of replacing a shirking manager; firms have many managers, constraining the amount of equity that can be awarded to any one manager; and, a...

Transactions, market orders and limit orders are three major factors which affect a specialist's information set and her inventory position. In modeling a specialist's quote updating process, before any exclusion of any of these factors, one should first address the fundamental question of their...