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Ultra\u2011short crypto bets on Polymarket and Kalshi now drive most crypto volume, blurring hedging and gambling as AI bots, HFT firms and retail chase five\u2011minute wins.<\/p>\n
\n Summary<\/span>\n <\/p>\n <\/p>\n Ultra-short-term crypto bets have exploded on prediction platforms Polymarket and Kalshi, turning markets for bitcoin, ether and other tokens into five-to-fifteen-minute gambling loops for retail traders and high-frequency firms alike.\u200b<\/p>\n Both platforms list binary \u201cup-down\u201d contracts on whether prices for bitcoin, ethereum, solana, XRP and other coins will be higher or lower at expiry, with maturities as short as five minutes on Polymarket and 15 minutes on both Polymarket and Kalshi.\u200b These short-duration markets now make up more than half of all crypto trading on the two venues, with combined daily volume around 70 million dollars, despite the broader crypto market trading below recent peaks.\u200b<\/p>\n Retail traders chase quick wins while staring at dashboards that show real-time prices ticking around a \u201cprice to beat\u201d as a countdown clock runs to zero.\u200b One engineer, Max Wojcik, told the FT<\/a> he relies on three AI chatbots \u2014 Claude, Gemini and ChatGPT \u2014 to scrape weeks of price data, debate among themselves and spit out odds before he manually fires his five-minute bitcoin bets, claiming to have doubled his capital in two months.\u200b<\/p>\n Polymarket initially allowed latency arbitrage to run wild: sophisticated firms exploited millisecond gaps between its prices and those on Binance, profiting from microstructure inefficiencies in the new 15-minute markets.\u200b Amir Hajian of market-maker Keyrock described growth in five- and 15-minute bitcoin options as \u201cexplosive\u201d, calling the products \u201cpure speculation\u201d and noting that high-frequency trading firms are active alongside retail punters.\u200b<\/p>\n To curb bots and extract revenue, Polymarket introduced per-trade fees on 15-minute crypto contracts in January, then moved to extend fees of up to 1.56 per cent across all crypto markets on the platform.\u200b Kalshi, which has rapidly grown its own short-term crypto forwards<\/a> since introducing them in December 2025, now sees these contracts account for roughly half of its crypto flow, although crypto still represents a modest share of total volume compared with sports and other markets.\u200b The company has sought US regulatory approval to add margin trading, but a person familiar with the plans said leveraged bets are not currently envisaged for the 15-minute crypto products.\u200b<\/p>\n On the regulatory side, Commodity Futures Trading Commission chair Mike Selig, appointed by President Donald Trump, has repeatedly defended event contracts as tools for hedging and portfolio management, even as critics see them drifting closer to gamified betting<\/a>.\u200b Investor advocate Amanda Fischer argues that prediction platforms have taken an already speculative asset class and injected \u201ceven more mania\u201d into trading by compressing the time horizon to minutes.<\/p>\n <\/p>\n Mainstream exchanges are moving to mimic this structure. Nasdaq has filed to list binary \u201cyes-no\u201d options on whether the Nasdaq 100 trades at, above or below preset levels over short windows.\u200b If regulators approve, the exchange may later explore \u201czero-day\u201d outcome options with expiries of 24 hours or less, importing the prediction-market style race-to-the-clock into traditional equity index trading.\u200b<\/p>\n Fischer sums up the direction bluntly: everyone is racing to build a\u00a0superapp<\/a>\u00a0that blends speculation, hedging and entertainment in one interface, with traditional finance borrowing heavily from crypto and crypto platforms increasingly mirroring Wall Street.<\/p>\n <\/p><\/div>\n\n\n
How the Five-minute Contracts Work<\/h2>\n
Fees, Arbitrage, and High-frequency Players<\/h2>\n
Even so, seven-day average volume in the short-term markets has climbed sharply since their October 2025 launch, with no visible slowdown after fees were added.\u200b<\/p>\nKalshi, Regulators, and the Push Toward Margin<\/h2>\n
TradFi Copies the Crypto Playbook<\/h2>\n