"I am thrilled with today's victory," Silverstein says in a statement. "But this is a win for all New Yorkers. Today's decision means an additional billion dollars of insurance proceeds will be available, which, together with Liberty Bonds, will ensure a timely and complete rebuild of the World Trade Center."

However, there is a possibility that the verdict will be appealed. At least one of the insurers involved in this second trial on the issue is contemplating such an action. Industrial Risk Insurers, a unit of GE Insurance Solutions, was one of nine insurers involved in this second phase. According to a statement, the firm "is convinced that the attack on the World Trade Center was one occurrence. The jury disagreed with our view, and we believe the evidence was to the contrary. We will examine our options."

This second trial regarding the World Trade Center insurance payout began in early October. In the first trial, which ended in early May, a jury determined that the destruction of the twin towers was one occurrence, not two as Silverstein had maintained. The core issue was whether the attacks on the World Trade Center constitutes one or two occurrences for purposes of the $3.5-billion per occurrence policy covering the twin towers, buildings 4 and 5 and the retail mall.