I am an amateur, so forgive me if it's a stupid question. The news are saying: 1. Ericsson, the world's largest maker of mobile-phone networks, agreed to buy Redback Networks Inc. for $2.1 billion in cash to gain expertise in IP-routing technology and more directly challenge Cisco Systems. 2. Under the proposed offer, Sweden's Ericsson will pay $25 per Redback share, an 18% premium to Tuesday's closing price. If I divide the $2.1B by around 70 M outstanding stocks I get $30 per share. What do they do with these $5 difference? And why the stock closed @ 25.66 when the news say 25.00?