Prediction markets have exploded from academic curiosities into billion-dollar platforms where millions bet on elections, sports, and policy outcomes. Understanding the total addressable market (TAM) for prediction markets in 2026 helps investors, entrepreneurs, and policymakers grasp where this industry is headed. This article breaks down current volumes, growth scenarios, and the catalysts that could unlock the next wave of adoption.
Current 2026 volume: Kalshi, Polymarket, and global venues
As of mid-2026, Kalshi and Polymarket dominate the U.S. and global prediction market landscape. Kalshi, the first CFTC-regulated exchange, reported over $400 million in annual trading volume across political, economic, and weather contracts. Polymarket, a decentralized crypto platform, has surged past $1.2 billion in yearly volume, driven by election cycles and global events.
Globally, platforms like Manifold Markets and legacy venues such as the Iowa Electronic Markets add another $150 million combined. Total industry volume in 2026 sits near $1.8 billion, up from roughly $800 million in 2024. This growth reflects regulatory clarity, mainstream media coverage, and user-friendly interfaces that attract retail traders.
Five-year growth scenarios
Looking ahead to 2031, analysts project three scenarios. The base case assumes 25% compound annual growth, reaching $5.5 billion in volume by 2031. This scenario banks on steady regulatory expansion, mobile app adoption, and integration with news platforms.
The optimistic case envisions 50% annual growth, pushing TAM to $13 billion. This requires federal legislation in the U.S. legalizing event contracts nationwide, partnerships with major sportsbooks, and institutional adoption by hedge funds and corporations for hedging and forecasting.
Comparable industries: sportsbooks, options, traditional polling
To gauge potential, compare prediction markets to adjacent industries. U.S. sports betting generated over $120 billion in handle in 2025, with operators keeping 5-7% as revenue. Traditional options markets trade trillions annually. Even traditional polling, a $3 billion industry, pales beside the liquidity prediction markets could capture.
Prediction markets offer real-time, crowd-sourced forecasts that often outperform polls. Research on the wisdom of crowds shows collective intelligence forecasting beats expert predictions in many domains. If prediction markets capture just 2% of the sports betting handle or a fraction of corporate forecasting budgets, TAM could exceed $10 billion within five years.
Bull case and bear case
The bull case hinges on regulatory wins, mainstream adoption, and institutional entry. If Congress passes clear event-contract rules and states follow, platforms could onboard tens of millions of users. Partnerships with media giants and integration into financial terminals would cement prediction markets as essential tools.
The bear case warns of regulatory crackdowns, legal ambiguity, and competition from sportsbooks. If the CFTC or state regulators restrict contract types or impose heavy compliance costs, growth stalls. User acquisition remains expensive, and if platforms fail to differentiate from gambling, public perception could sour.