Quick Answer
What Is Closing Line Value (CLV) in Betting?
Closing line value compares the full quote available when a position was taken with the market near kickoff. It measures price or number movement, not whether one wager won.
Direct answer
Closing line value, usually shortened to CLV, is the difference between the line or price you took and the market’s closing quote near kickoff. Positive CLV means your entry was more favorable than the close for the same side.
Point spread example
Your entry: Underdog +3.5 (-110)
Closing line: Underdog +2.5 (-110)
Receiving +3.5 is more favorable than receiving +2.5 at the same price. The entry beat the closing number by one point.
Your entry
Underdog +3.5
Price: -110
Closing line
Underdog +2.5
Price: -110
Entry received one more point than the closing quote.
CLV compares market observations. It does not determine whether the game wins or loses.
Price-only example
Your entry: Favorite -3 (-105)
Closing line: Favorite -3 (-120)
The spread stayed at -3, but the closing price required more risk for the same potential profit. The earlier -105 was the more favorable complete quote.
What CLV does not mean
CLV does not guarantee a winning wager, prove that the market is correct, or turn one result into evidence of skill. A +3.5 position can lose even if the market closes +2.5. CLV describes the relationship between two market observations.
Common mistake
Compare the same side, market, sportsbook context, and attached price. Calling +3.5 “better” than +3 without recording the prices can hide a tradeoff in cost.
Learn next
See how the opening line, current line, and closing line describe the market at different times.