Closing Line Value (CLV) measures whether your entry price beat or trailed the market's final settled price. Positive CLV is the strongest signal of long-term profitability in prediction markets.
Closing Line Value is the difference between the price you bought at and the price the market closed at right before resolution. If you bought YES at 0.45 and the market closed at 0.62, you had +0.17 CLV — the market eventually agreed you were right, even before resolution.
In binary markets, a single high-EV bet can lose. CLV averages out that variance: bettors who consistently beat the closing line are almost always profitable long-term, regardless of any single market's outcome.
On live signals, every recorded trade is later annotated with its CLV once the market closes, so you can sort wallets by closing-line accuracy rather than raw PnL.