Prediction markets have a slightly strange sales pitch when you first come across them. Basically, the idea is that if you think something is going to happen, you can put your money behind your opinion.
Will a politician win an election? Will interest rates fall? Will a film win an Oscar? Will a football team win the league? Will a particular city have a record hot day?
There is probably a market for it, and some platforms have gone so far into sport that, to the average person looking at them, the difference between a prediction market and a normal bookmaker can seem pretty thin.
Which raises an obvious question. If you can trade on the result of a football match, why isn’t horse racing a natural fit?
After all, predicting the winner of a horse race is about as old as betting itself.
What Exactly Is a Prediction Market?
The basic idea is much simpler than the terminology makes it sound.
A prediction market usually lets people buy contracts based on whether something will or will not happen. A contract might ask whether a certain team will win a match, for example.
If a “Yes” contract is trading at 65 cents, the market is roughly suggesting a 65% chance of that outcome happening. Get it right, and the contract eventually settles at $1. Get it wrong, and it becomes worth nothing.
The price can move as people buy and sell, so participants don’t necessarily need to hold their position until the event finishes.
That makes prediction markets look and feel different from conventional gambling products. Someone might play a Royal Spins demo game online, place a football accumulator with a bookmaker, or buy a prediction contract, but those activities are being offered under very different systems even if money and uncertain outcomes sit somewhere in the background.
Prediction markets like to describe what their prices represent as the collective view of the people trading, and there is something quite appealing about that idea.
Instead of asking an expert what they think will happen, you can see where people are actually putting their money.
Sport Changed Everything
For years, prediction markets were mostly associated with things such as elections, economics, and major news events, but sports have changed that.
American prediction markets now offer contracts connected to major leagues, college sports, combat sports, golf, football, and even Formula 1.
Once that door opened, horse racing seemed an obvious next step.
So, imagine a Kentucky Derby market. One horse could effectively be trading at a 20% chance of winning, another at 12%, another at 8%, and so on.
Those prices could change throughout Derby week as news, weather forecasts, and public opinion moved the market.
It sounds almost made for prediction trading, yet horse racing has remained largely outside the system.
The reason is not that prediction-market companies suddenly became nervous about people betting on sport; it’s because horse racing is different.
Horse Racing Already Has Its Own Betting System
In the US, racing has spent decades operating under its own set of betting rules, and the key piece of federal legislation that keeps the whole thing running is the Interstate Horseracing Act of 1978.
It governs interstate wagering on horse races and, importantly, gives racing organisations and regulators a say in who can take bets on their events, which matters because racing isn’t simply providing a sporting event for someone else to build a betting market around.
Betting is part of the sport’s financial structure, and American racing mainly uses pari-mutuel wagering.
Unlike in the UK, instead of a bookmaker simply offering odds and taking the opposite side of a bet, money goes into betting pools. A portion is removed, and the rest is returned to winning bettors.
Money from those pools helps support racecourses, purses and the wider racing industry, so a prediction market sitting outside that structure creates an obvious problem.
If somebody creates a contract asking “Will Horse A win the Kentucky Derby?” and thousands of people trade it, racing may reasonably ask why somebody else should be making money from its event without participating in the existing racing betting system.
Racing Has Something Other Sports Don’t
This is where horse racing has an unusual advantage.
The NFL cannot simply tell every prediction market in America that nobody is allowed to offer a contract on the Super Bowl.
Horse racing, however, has much stronger control over wagering connected to its races, and under the Interstate Horseracing Act, certain interstate bets require consent from parties within racing, including the host racing association and relevant racing authorities.
That has given the industry a legal argument for keeping prediction markets away from its biggest events.
Racing groups have already made their position clear in discussions with US regulators. Their view is essentially that horse-race event contracts cannot simply bypass the wagering rules that already exist.
That explains why a company can comfortably offer a prediction on a football game yet become far more cautious when somebody suggests doing exactly the same thing with the Kentucky Derby.
But Horse Racing Is Starting to Appear
There is one important twist in that horse racing is no longer completely missing from prediction markets.
Polymarket, for example, has shown horse-racing markets covering individual races and major events. That means saying prediction markets never offer racing is no longer completely accurate.
But it remains a tiny category compared with football, basketball, baseball and other sports. More importantly, federally regulated US prediction exchanges still face the much bigger question of how horse-racing contracts would fit alongside existing racing law.
There are legal rights, existing betting agreements and large amounts of racing revenue sitting behind every major race, and the powers that be want to keep it that way.
Could Prediction Markets Eventually Move Into Racing?
Almost certainly someone will keep trying, if only because horse racing is simply too suitable for this type of trading to be ignored forever.
Racing fans already think in probabilities. Odds move constantly. Information matters. People disagree strongly about the chances of individual runners, and markets can change dramatically in the hours before a race. It has practically everything a prediction market wants.
The problem is that racing already has practically everything a prediction market would normally provide. Established exchanges, bookmakers, pari-mutuel pools, and live prices already reflect what thousands of people think will happen.
Prediction markets therefore need to offer something genuinely different while also finding a way to work with racing’s existing legal and financial system.
These markets have become famous for letting people bet on outcomes that once seemed almost impossible, including politics, weather, entertainment, economics, sport, and all sorts of strange real-world events that can now become tradeable questions.
Yet ask whether a horse will win a two-minute race around Churchill Downs and things suddenly become much more complicated.
For an industry built around answering “Yes” or “No”, horse racing has managed to produce a very firm “It’s not that simple.”
