1.   Investors lined up to buy shares, and when trading started, Spider-Man visited the floor of the New York Stock Exchange to celebrate.

2.   Since the company started Internet trading for its domestic customers in May, many foreign customers have expressed interest.

3.   The SEC has said it will not stand in the way of the electronic communications networks, or ECNs, that want to start evening trading this year.

4.   Still, it was hard to assess how U.S. investors would react when trading started again.