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How sportsbooks make money
Sportsbooks make money through pricing, vig, hold, and risk management — not by being clairvoyant, though they do enjoy looking calmer than everyone else.
The short answer
Sportsbooks make money by building a margin into the odds. That margin is usually called the vig or juice. Over time, that pricing edge is what the book is trying to protect.
Where the profit comes from
- Vig / juice: the built-in fee hidden inside the price.
- Hold: the market-wide margin the sportsbook expects to keep.
- Line shading: small pricing tweaks to manage action and liability.
- Market management: books react to information and betting volume to avoid being the softest number on the board.
Do sportsbooks always try to balance action perfectly?
No. Sometimes they try to balance exposure. Sometimes they respect sharp money. Sometimes they are willing to take a position. The internet loves the phrase “Vegas knows,” but most of the time the book mostly knows it would prefer not to be hanging a terrible number for very long.