After paying attention to prediction markets, I've increasingly noticed how similar they are to binary options in many ways. Although not exactly the same, from a certain perspective, prediction markets can be seen as an extended form of binary options.
Prediction markets, such as Polymarket, Kalshi, and Opinion, use yes/no binary contracts. The price reflects the market's consensus on the probability of an event occurring. For example, predicting 'Will BTC break $100,000 by January 2025?'—the price fluctuates between 0 and 1, and the real-time price indicates the market's consensus on the event's likelihood. If the price is 0.7, it means the market believes there is a 70% chance it will happen. At expiration, settlement is based on the outcome: if it happens, the value is 1; if not, it's 0. Doesn't this look very similar to binary options?
The core of binary options is also based on 'yes/no' or 'will happen/won't happen' predictions. For instance, a binary options contract might stipulate: if Tesla's stock price is above a certain level at expiration, it pays a fixed amount (e.g., $1); otherwise, it pays $0. This is essentially pricing the probability of an event. In other words, it is also a form of predicting future events. Some financial players, in practice, use binary options as tools for forecasting financial events.
Simply put, both use market prices to estimate the probability of future events (a contract price of 0.6 implies the market sees a 60% chance of the event occurring), both aggregate the wisdom of many participants in the market, and both allow participants to speculate (bet on event outcomes) or use them for risk hedging. Binary options are like a financialized version of prediction markets.
There are also some differences.
Prediction markets have a broader scope and can include any verifiable event, such as weather or movie box office results—non-financial events can participate, and the event timeframes are more flexible. Binary options primarily focus on predicting the prices of financial assets, such as forex, stocks, commodities, etc., and typically have shorter expiration times (minutes or days).
In terms of market liquidity and depth, binary options are more speculative and gambling-like, with liquidity depending on the broker; prediction markets emphasize the accuracy of event prediction—even outperforming polls (after all, real money involvement makes a difference)—and the incentive mechanism encourages the input of true information.
Finally, regarding regulation and legality, binary options are considered high-risk financial products in some countries (like parts of the EU), are strictly regulated, and are even prohibited in some places (due to their gambling nature). In the U.S., they can only be traded on exchanges regulated by the CFTC (Commodity Futures Trading Commission). Currently, crypto prediction markets are still in their early stages, and regulation is not yet clear; they might gradually be brought under regulation due to 'market manipulation' or other issues in the future.
These differences might lead prediction markets down a different path, and future regulations will likely differ as well.
