Polymarket, Kalshi Hit Record Volumes as Sports Betting Dominates Prediction Markets

Rising sports speculation drives $7.4B in trades, but regulatory scrutiny grows amid crypto gambling concerns.

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Created by Kornelija Poderskytė from Ciphera

Prediction markets are experiencing unprecedented growth, with Kalshi and Polymarket processing over $7.4 billion in trading volume in October, marking their highest month on record.

Kalshi led the pack with roughly $4.4 billion traded, while Polymarket followed with $3 billion volume,  as sports-related contracts surged past political and economic predictions in both user engagement and liquidity.

Between October 20 and 27 alone, Kalshi recorded more than $1.1 billion in sports wagers, compared with just $51 million on political outcomes.

The boom may be driven by shifting U.S. tax laws, which could make prediction markets more attractive than traditional sportsbooks, and speculation over potential token airdrops, drawing in both retail and crypto-native traders.

Regulators Begin to Push Back

The market’s meteoric rise is also catching the eye of regulators. In late October, Romania’s National Office for Gambling (ONJN) blocked access to Polymarket, labeling it an unlicensed betting operation and ordering internet providers to restrict access nationwide.

Authorities argued that Polymarket’s peer-to-peer crypto betting model meets the legal definition of gambling under Romanian law and therefore requires a license. The ONJN also cited the absence of responsible gambling tools and AML safeguards.

The enforcement underscores growing regulatory scrutiny of crypto-based prediction markets in Europe. While Polymarket describes itself as an “event-trading platform,” regulators increasingly treat such models as equivalent to online gambling.

Why This Matters

As prediction markets continue to blur the line between finance and betting, their rapid growth is drawing closer attention from regulators, even as traders keep fueling billions in new volume across the sector.

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People Also Ask:

What is Polymarket?

Polymarket is a crypto-based prediction market platform where users can trade on outcomes of real-world events, including sports, politics, and finance.

How do trades on Polymarket work?

Users buy and sell positions on event outcomes, essentially wagering against other traders. Profits depend on the accuracy of predictions, similar to traditional betting or futures markets.

What are the risks of trading on Polymarket?

As with any prediction or crypto market, risks include loss of capital, high volatility, regulatory changes, and platform-specific issues such as liquidity constraints.

Why is Polymarket important in crypto markets?

Polymarket highlights how crypto prediction markets are evolving, combining elements of betting, trading, and DeFi, attracting significant liquidity and regulatory attention globally.

Is Polymarket considered legal everywhere?

Regulations vary by country. For example, Romania recently blocked access to Polymarket, citing its peer-to-peer crypto model as unlicensed gambling under national law.

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This article is for information purposes only and should not be considered trading or investment advice. Nothing herein shall be construed as financial, legal, or tax advice. Trading forex, cryptocurrencies, and CFDs pose a considerable risk of loss.

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Ciphera Team

Ciphera is an online media outlet, with a focus to cover blockchain and crypto news, opinions, trends and helpful articles. We focus on delivering fast and objective news about cryptocurrencies and crypto markets with a swirl of passion. Our dedicated and motivated global team is here to deliver the highest quality content. If you want to collaborate with Ciphera and become our contibutor, please contact us at contact@ciphera.com.

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