The Surge of Five-Minute Crypto Bets on Polymarket and Kalshi

The recent rise of ultra-short crypto bets on prediction platforms like Polymarket and Kalshi has significantly changed the landscape of crypto trading. These platforms now allow traders to make quick, five-minute bets on the price movements of cryptocurrencies like Bitcoin and Ethereum.

Key Takeaways

Ultra-short crypto contracts are dominating trading on Polymarket and Kalshi.
Traders can place bets on whether cryptocurrency prices will go up or down in as little as five minutes.
High-frequency trading firms and retail investors are both engaging in these quick trades.
Recent regulations have been introduced, including trade fees on short contracts.
Traditional exchanges are exploring similar betting structures.

Five-minute crypto prediction market contracts countdown screen

Understanding Short-Term Crypto Contracts

Predictions on platforms like Polymarket and Kalshi consist of binary contracts where participants bet on whether the prices of cryptocurrencies such as Bitcoin, Ethereum, Solana, and XRP will be above or below a specific value at the contract's expiry. While Polymarket offers five-minute expiries, Kalshi provides contracts that can last up to 15 minutes. These short-term contracts now account for over half of the trades on these platforms, generating around $70 million in daily volume, even when the broader crypto market struggles to gain momentum.

Retail traders are drawn to the prospect of quick profits, utilizing dashboards that display real-time price movements against a rapidly ticking countdown clock. For instance, engineer Max Wojcik shared that he uses AI chatbots like Claude, Gemini, and ChatGPT to analyze weeks of price data and generate odds for his five-minute Bitcoin bets, reportedly doubling his investments within just two months.

The Role of Fees and High-Frequency Trading

Initially, Polymarket experienced significant arbitrage opportunities, where savvy firms took advantage of price discrepancies between its platform and exchanges like Binance. Amir Hajian from market-maker Keyrock noted the explosive growth in five- and 15-minute Bitcoin options, labeling them as “pure speculation.” As both high-frequency trading firms and individual traders engage in these bets, the competitive nature of the market continues to rise.

To combat the influence of bots and to improve revenue, Polymarket instituted per-trade fees for its 15-minute crypto contracts early this year and expanded fees up to 1.56% across all crypto products. Despite these fees, the trading volume for short-term markets has surged markedly since their launch in October 2025, indicating strong ongoing interest.

Kalshi’s Growth and Regulatory Developments

Kalshi, which launched its own short-term crypto contracts in December 2025, now sees these products contributing to nearly half of its crypto trading volume. However, the overall crypto share remains modest compared to other markets like sports betting. The company is seeking regulatory approval in the U.S. to introduce margin trading. However, insiders suggest that leveraged bets are not currently planned for these 15-minute crypto contracts.

From a regulatory perspective, Mike Selig, chair of the Commodity Futures Trading Commission and appointed by President Trump, has defended event contracts as useful tools for hedging and portfolio management. Critics, however, argue that such contracts have convoluted investment, pushing the boundary toward gamified betting. Investor advocate Amanda Fischer emphasizes that these prediction platforms intensify the speculative nature of already volatile cryptocurrencies by compressing their trading timelines to mere minutes.

Traditional Finance Takes Cues from Crypto

In response to the popularity of these betting structures, traditional exchanges are beginning to adopt similar models. Nasdaq has applied to list binary “yes-no” options based on short-term movements of the Nasdaq 100 index. If approved, the exchange may expand to include “zero-day” options that expire in 24 hours or less, bringing a race-against-time dynamic to conventional equity index trading.

Fischer succinctly summarizes the trend: every player is looking to create a multi-functional platform that combines speculation, hedging, and entertainment, mirroring crypto influences while traditional financial platforms increasingly adapt elements from the crypto sector.