Closing Line Value (CLV)
The value gained by betting at a better price than the closing line.
Closing line value (CLV) measures whether you got a better price than the final line before the game started. If you bet -110 and the line closed at -130, you have positive CLV. You got the better of the market.
Why CLV Matters
The closing line represents the most efficient consensus of all available information. Research shows that bettors who consistently beat the closing line, getting better numbers than where the market settled, are profitable long-term. CLV is one of the strongest predictors of long-term betting success.
Calculating CLV
CLV = Closing line implied probability − Your odds implied probability
If you bet +130 (43.5% implied) and it closed at +110 (47.6%), your CLV is positive: you got a better price than the market's final number. If you bet +130 and it closed at +150 (40%), your CLV is negative, because the market moved away from your side.
The Efficient Market Hypothesis
The closing line is often compared to a stock's closing price. Markets are imperfect early in the week but become more efficient as sharp money comes in. Getting ahead of sharp moves is how bettors capture CLV.
Key Takeaways
- CLV measures how much better your price was vs. the closing line.
- Consistent positive CLV is one of the best indicators of a profitable bettor.
- Beating the closing line regularly is harder than picking winners short-term.
Examples
- Bet Chiefs -3 on Monday, line closed -5. You have positive CLV.
- Bet the over 47 on Tuesday, closed at over 44. Negative CLV; the market moved away from you.
Related Terms
Test Your Knowledge
1 / 4Do you know what Closing Line means?
The final odds offered by a sportsbook before a game starts, often used as a benchmark for line value.
Frequently Asked Questions
How do I track CLV?
Record the odds you got and the closing odds for every bet, then convert both to implied probability. If your price implied a lower probability than the close, you beat it.
Can you have positive CLV and still lose money?
Yes, over short stretches. CLV shows you are getting good prices. Results tend to catch up over hundreds of bets, not dozens.