Originally posted on 09/18/2007:

Bookmaking is not Pinnacle's primary business. Pinnacle is a betting operation that masks itself as a bookmaking operation. Any money they make booking is gravy.

The people behind Pinnacle could make money laying 110, so instead they opened up a book and now they get +105 on the same games they would be happy to lay 110 on. That drops their break even from about 54% to around 48%.

They move the lines to attract the action they want. If they have no opinion they try to play it as neutral as possible and settle for the low hold any other bookmaker would earn from the same low juice line.