CLV Calculator

Closing Line Value compares your entry with a defined market close. It is a useful market-relative price diagnostic, but its interpretation depends on the close definition, timing, venue, and sample.

Prediction Market (Polymarket / Kalshi)

Your Side
Were you buying or selling the contract?
Entry Price (¢)
¢
Price you got
Closing Price (¢)
¢
Use one consistent reference: pregame close or a disclosed in-play horizon

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 Your entry finished ahead of the close you supplied. A sustained positive distribution can support a price-quality hypothesis, but it does not by itself prove forecasting skill or future profit.
Zero Your entry matched the supplied close. This observation is neutral by this measure.
Negative Your entry finished behind the close you supplied. A sustained negative distribution is a reason to investigate timing, selection, liquidity, and close construction; one result does not identify the cause.

There is no universal trade-count threshold that makes CLV reliable. Judge uncertainty using the dependence structure, close definition, market regime, and effect size; same-game observations should not be treated as independent. Read the full breakdown in our closing line value guide.

ZenHodl's live CLV dashboards

We publish our own unconditioned CLV by sport and entry-edge bucket. See the current scorecard and its correction history:

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