Odds are a living price
Between opening, sometimes days before the match, and closing at kick-off, a price moves dozens of times. Each move tells a story: money coming in, news breaking, a bookmaker balancing its book. Reading these moves tells you when a price is still good and when it no longer is.
The three causes of a move
- Money. At a sharp bookmaker like Pinnacle, big bets from informed bettors move the price. That is how the market aggregates information.
- Information. An injury, a line-up, the weather, a withdrawal: the references react within seconds.
- Risk management. A mainstream bookmaker may shorten a price simply because it has taken too much on one side, without the true chance changing.
Only the first two change the true chance. The third sometimes creates value on the other side.
Steam and drift
- Steam: a fast, clear move at the references, a sign that a large volume of informed money has just come in. Lyon's price goes from 2.30 to 2.10 within minutes.
- Drift: the opposite move; the price lengthens, the probability falls.
When Pinnacle moves, mainstream bookmakers follow, but late: a few seconds for some, several minutes for others. During that delay, their old price sits above the new fair price: that is a value window. A bet taken in the direction of the steam is more likely to keep its edge until the close.
Don't chase a price that has dropped
The opposite trap: you see a price go from 2.30 to 2.10 and you take it "because everyone is backing it". If the fair price is now 2.15, taking 2.10 is a losing bet on average. The right question is never "which way is the market going?" but "does the price on offer beat the fair price right now?".
That is why Babeth shows a minimum price for every bet: below it, the edge drops under 2% and the bet is no longer worth playing. If your bookmaker has already adjusted, skip it.
Opening, closing and closing line value
The opening price is the first one published, the least informed. The closing price, just before kick-off, is the most informed: with the margin removed, it is the best estimate of the true chance there is. Regularly getting a better price than the close is proof of a real edge; the guide on closing line value explains it in detail.
What Proba Bet does
- Babeth rereads the odds every minute and compares each bookmaker with the current fair price, not yesterday's.
- The Sharp plan shows line moves: every outcome whose probability moved by 2.5 points or more at Pinnacle over the last hour, refreshed every 60 seconds.
- Every recorded bet automatically gets its closing price and its closing line value.
To check a price by hand, the odds checker gives the current true chance for matches in the next four days.
Key takeaways
Odds move for three reasons: money, information, risk. The references move first; mainstream bookmakers follow late, and that delay is a source of value. But never chase a price: compare it with the current fair price, and judge it at the close.