Prediction markets hit $111B in Q2 as sport and stablecoins collide

A 1,764% year-on-year surge in notional volume signals prediction markets are no longer a fintech curiosity but a macro-scale asset class.

By Disrupts Editorial Team Sat, 22 August 2026

A long, brightly lit modern corridor with concrete walls, a light tiled floor, and a white ceiling of strip lights, featuring numerous doors with glowing blue digital patterns on their glass panels.

Global prediction markets traded $111 billion in notional volume during the second quarter of 2026, according to a State of Prediction Markets report published this week by analyst Petrit via the Predicted newsletter. That figure represents a 1,764% increase year-on-year and exceeds the combined total for the whole of 2024 and 2025. June alone recorded $52.7 billion, the largest single month on record. The sector also attracted $1.3 billion in venture funding over the same period.

The numbers reframe prediction markets from a niche derivatives experiment into a structurally significant venue for speculative capital, one that is now drawing in incumbent financial infrastructure, big-technology platforms, and crypto-native exchanges simultaneously.

Duopoly and diversification

Two platforms control the overwhelming majority of activity. Kalshi accounts for approximately 63% of Q2 volume ($65.9 billion), with Polymarket at 28% ($26.7 billion), together representing around 91% of the market. The composition of that volume, however, reveals a tension at the heart of the sector's identity. Sports predictions drove 86% of Kalshi's volume and 56% of Polymarket's, prompting the central question in the report: are these prediction markets or rebranded sports-betting exchanges? New York State appears to have settled on the latter interpretation, filing a lawsuit against Kalshi in early August seeking $36 billion in penalties and an injunction to shut the platform down, alleging it operates an illegal, unregulated sports-betting service. That regulatory confrontation will test whether the federal permissions Kalshi secured in the United States are durable against state-level challenge, and its outcome is likely to set a precedent that ripples through every jurisdiction in which prediction markets are seeking to operate.

Despite the duopoly, the broader ecosystem is expanding rapidly. The report counts 125 active platforms across 12 distinct market mechanisms, up from just 15 in 2020. Hyperliquid launched on-chain prediction markets in May but has captured only 0.3% of volume to date, illustrating the difficulty of dislodging entrenched liquidity networks. Product convergence is also visible at the top: both Kalshi and Polymarket have introduced combination and parlay-style bets (accounting for more than 30% of Kalshi's Q2 volume), perpetual futures, and stablecoin settlement rails.

Convergence at the capital layer

The more significant story for cross-sector investors is who is now entering the space and why. Robinhood has launched its own prediction-market exchange and recently received FCA authorisation to offer cryptocurrency services in the UK, positioning it as a single venue for retail traders who want exposure across equities, crypto, and event-based contracts. Coinbase's prediction-market revenue doubled to more than $100 million on an annualised basis in Q2. Meta is reportedly building a standalone prediction-markets application, which would bring social-graph-driven liquidity to the category at a scale no existing operator can match.

The stablecoin layer running beneath these platforms matters as much as the headline volumes. Prediction markets are quietly functioning as one of the highest-velocity use cases for dollar-pegged digital assets, validating the broader infrastructure buildout visible elsewhere this week: Wells Fargo rolling out tokenised deposits, Circle revealing its Arc blockchain mainnet validator cohort (including BlackRock, DTCC, Mastercard, and Visa), and Western Union launching a stablecoin-backed Visa card across 37 markets.

For macro investors, the convergence thesis is straightforward. Capital that previously sat in regulated sports-betting operators, derivatives venues, and crypto-futures exchanges is flowing into a new hybrid category that borrows mechanics from all three. The $1.3 billion in Q2 venture funding suggests institutional allocators have concluded this is a durable structure rather than a cycle-peak anomaly. The unresolved variable is regulatory geography: the New York action against Kalshi, if successful, would fragment a market that currently benefits from treating the US as a single jurisdiction, and would almost certainly accelerate platform migration toward more permissive regulatory regimes in Europe, the Gulf, and Southeast Asia.