Re: What do line movements tell us?
The linesmakers make an educated guess at to what the true line should be. They adjust it to create somewhat balanced action while overcharging the "square" side slightly. Then it comes down to supply and demand. If the squares are piling in on the celtics -10.5 why not move it to -11? Not to balance the action, but you just obviously raise the price when demand is high.
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