How to Bet on (Literally) Anything

What It Covers

Prediction markets like Polymarket and Kalshi have exploded in America, allowing users to bet on politics, culture, and world events. David Yaffe-Bellany explains how these platforms evolved from illegal crypto operations to mainstream financial tools, their $12 billion monthly trading volume, and concerns about insider trading and gambling addiction.

Key Questions Answered

• •Legal transformation: Prediction markets operated illegally until 2024, requiring VPNs and cryptocurrency. After Trump's election victory and administration support, the Justice Department dropped investigations, Kalshi won regulatory battles, and platforms became accessible to US users without restrictions, growing trading volume 400% year-over-year to $12 billion monthly.
• •Market mechanics: Users buy yes or no event contracts priced between $0 and $1, with prices reflecting probability. A 20-cent yes contract indicates 20% likelihood. If the event occurs, contracts pay $1. This crowdsourced betting model claims to produce more accurate predictions than traditional polling by incentivizing research through financial stakes.
• •Insider trading risks: The platforms face manipulation concerns after suspicious bets, including a trader profiting on Venezuela regime change hours before US military action. While CFTC rules prohibit insider trading, enforcement remains untested. Some prediction market advocates argue insider information actually improves accuracy, creating better forecasts despite ethical concerns.
• •Mainstream integration: Major organizations now partner with prediction markets. NHL, UFC, and Coinbase signed licensing deals. Wall Street Journal, CNN, and CNBC use platform data in reporting. The Golden Globes broadcast Polymarket odds during the best podcast award announcement, demonstrating rapid cultural acceptance beyond niche crypto communities.
• •Addiction vulnerability: Platforms use bright colors and real-time number fluctuations designed to engage users continuously. Young men represent the primary demographic, making them most susceptible to gambling addiction. Markets now cover LA wildfires, Gaza famine declarations, and other human tragedies, creating financial incentives for people to profit from suffering.