Early NFL lines often shift a full point or more—from, say, -3 to -4.5—thanks...

https://www.phone-bookmarks.win/jumping-on-early-nfl-lines-can-be-rough-for-example-a-spread-might-open-at-3

Early NFL lines often shift a full point or more—from, say, -3 to -4.5—thanks to initial guesswork and uneven bets. Jumping in too soon can lock you into a worse price