CLV Calculator

Closing Line Value tells you whether you beat the market's final price. It is the single best predictor of long-term ROI — more reliable than win rate.

Prediction Market (Polymarket / Kalshi)

Your Side

Were you buying or selling the contract?

Entry Price (¢)

Price you got

Closing Price (¢)

Last price before event start / resolution

Sportsbook

Odds Format

Entry Odds

Odds you took

Closing Odds

Final market line before kickoff

Closing Line Value

Enter valid entry and closing values to see your CLV.

What CLV means

Positive You beat the close. The market eventually agreed your entry was a good price. Sustained positive CLV across 500+ bets is the signal of genuine edge — even if individual months look ugly on win rate.

Zero You matched the close. Neither sharp nor square — but watch the trend over time.

Negative You lost to the close. The market eventually moved against your entry. If this is sustained, the wins you do collect are coming from outcome variance, not edge — regression is coming.

Sample-size rule of thumb: CLV is noise under 50 bets, informative at 100-200, robust at 500+. Read the full breakdown in our closing line value guide.

ZenHodl's live CLV dashboards

We publish our own CLV by sport, by edge bucket, and by bot. See our live numbers:

CLV Scorecard 78-Point CLV Gap (Evidence) CLV Repair Status

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