Spread betting

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Spread betting is any of various types of wagering on the outcome of an event, where the pay-off is based on the accuracy of the wager, rather than a simple "win or lose" outcome, such as fixed-odds (or money-line) betting or parimutuel betting. A spread is a range of outcomes, and the bet is whether the outcome will be above or below the spread. Spread betting has been a major growth market in the UK in recent years, with the number of gamblers heading towards one million.[1] Spread betting carries a high level of risk, with potential losses or gains far in excess of the original money wagered.[2] In the UK, spread betting is regulated by the Financial Services Authority rather than the Gambling Commission.[3]



The general purpose of spread betting is to create an active market for both sides of a binary wager, even if the outcome of an event may appear a priori (prima facie) to be biased towards one side or the other. In a sporting event a strong team may be matched up against a historically weaker team; almost every game will have a favorite and an underdog. If the wager is simply "Will the favorite win?", more bets are likely to be made for the favorite, possibly to such an extent that there would be very few betters willing to take the underdog.

The point spread is essentially a handicap towards the underdog. The wager becomes "Will the favorite win by more than the point spread?" The point spread can be moved to any level to create an equal number of participants on each side of the wager. This allows a bookmaker to make a market by accepting wagers on both sides of the spread. The bookmaker charges a commission, or vigorish, and acts as the counterparty for each participant. As long as the total amount wagered on each side is roughly equal, the bookmaker is unconcerned with the actual outcome; profits instead come from the commissions.

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