Gate Connects to Polymarket: How Big Is the Trading Volume in the Prediction Market?

In March 2026, Gate officially integrated with Polymarket, the world's largest decentralized prediction market, becoming the first centralized exchange to incorporate the platform. This move enabled over 54 million Gate users to participate in prediction trading for global hot topics with a single click. A core question that follows is: How large is the trading volume of prediction markets, exactly?

Polymarket's Monthly Trading Volume: From Peak to Adjustment

To understand prediction market volume, Polymarket is the most representative sample to observe.

According to on-chain data from Dune Analytics, the Polymarket international platform reached an all-time high in March 2026, with trading volume hitting $10.5 billion. It declined to just over $9 billion in April, and further dropped to approximately $7.1 billion in May.

This decline has drawn market attention. Data shows that from August 2025 to March 2026, Polymarket's trading volume rose by more than 850% cumulatively. A periodic pullback after such a steep growth curve is considered normal fluctuation from a statistical perspective.

A Polymarket spokesperson told CNBC that the spring system maintenance and the adaptation period following the platform's full transition to the new stablecoin Polymarket USD were contributing factors to the volume decline. Monthly active users fell from over 780k in March to under 650k in May.

Notably, trading volume has shown signs of recovery entering June—the first week of June saw international platform trading volume reach $1.9 billion, the highest single-week record since late April. The start of the World Cup tournament is becoming a catalyst for a new growth cycle.

Industry-Wide Perspective: Total Prediction Market Volume Far Exceeds Single-Platform Data

Looking only at Polymarket's international platform monthly data may underestimate the overall scale of prediction markets.

From a cross-platform perspective, Polymarket's biggest competitor, Kalshi, recorded trading volume exceeding $17.9 billion in May, with total May trading volume of approximately $17.3 billion, accounting for 61% of all prediction markets. The combined monthly volume of the two far exceeds any single platform's figure.

From an industry total perspective, according to Pew Research Center data, the combined monthly trading volume of Kalshi and Polymarket surged from less than $5 billion in September 2025 to approximately $24 billion in April 2026, growing nearly fivefold in seven months.

From a growth trajectory perspective, according to a report by blockchain analytics firm TRM Labs, the total monthly trading volume of prediction market platforms increased significantly from $1.2 billion in early 2025 to over $20 billion, and the number of unique wallets tripled to 840k in the six months ending February 2026.

In Q1 2026, global prediction market trading volume reached approximately $75 billion. Data disclosed by a16z crypto shows that weekly trading volume in prediction markets reached $10.8 billion for the first time in June, setting a new all-time high.

These data points collectively point to one conclusion: Prediction market trading volume is not only "large" but also in an accelerating expansion phase.

Gate's Integration with Polymarket: How Does It Affect Prediction Market Volume?

The impact of Gate's integration on prediction market volume needs to be understood from a structural level.

Lowering the Participation Barrier, Unlocking Incremental Users

Polymarket's native usage barrier has long constrained user base growth. Users need to register separately, configure a Web3 wallet, bridge USDC (Polygon network), and pay gas fees. For the majority of centralized exchange users, this process leads to significant drop-off.

Gate's integration precisely addresses this pain point. Users can directly use USDT from their Gate spot accounts to participate in prediction trading without additional gas fees, lowering the entry barrier to the same level as spot trading. Gate has also innovatively introduced a dual "Prediction Mode + Trading Mode" architecture, catering to both beginner ease of use and providing professional traders with order books, candlestick charts, and other tools.

Additionally, on June 18, 2026, Gate DEX integrated Polymarket, allowing users to connect directly via Gate Wallet or TEE Quick Wallet for on-chain self-custodial trading.

Positive Feedback Effect of Liquidity Aggregation

There is a positive feedback relationship between prediction market depth and the number of participating users. More users bring deeper liquidity, and deeper liquidity attracts larger capital inflows. Gate's base of over 51 million users brings significant incremental liquidity and volume to Polymarket.

In June 2026, prediction market open interest climbed to approximately $1.48 billion. Gate's integration is accelerating this liquidity accumulation process.

Core Drivers of Prediction Market Volume Growth

The explosion in prediction market volume is no accident; there is a clear logical chain behind it.

Increased Density of Macro Events

2026 coincides with the U.S. midterm election cycle, compounded by multiple geopolitical hotspot events. The 2026 FIFA World Cup has further boosted market size—Polymarket's World Cup winner contract volume has exceeded $3 billion, and combined trading volume for World Cup markets across the two platforms has surpassed $5.4 billion.

Accelerated Institutional Capital Inflow

In March 2026, Intercontinental Exchange (ICE), the parent company of the New York Stock Exchange, completed a $600 million investment in Polymarket. Both Polymarket and Kalshi have been reportedly in talks for new funding rounds at valuations around $20 billion. The injection of institutional liquidity is significantly enhancing market depth and trading efficiency.

Business Model Achieves Closed Loop

On March 30, 2026, Polymarket ended its long-standing zero-fee model and began charging taker fees on core categories. Two days after the reform, the platform's daily revenue exceeded $1 million. Polymarket exclusively disclosed to CNBC that its annualized revenue has surpassed $1 billion. The transition from "subsidy-driven user acquisition" to "self-sustaining revenue generation" provides a financial foundation for the platform's sustainable development.

How to View Prediction Market Volume Data?

When evaluating prediction market volume, several methodological issues need attention.

Definition Discrepancies: Different data platforms have varying ways of calculating "trading volume." Data from Dune Analytics, Artemis, DefiLlama, and others differ due to varying statistical scopes and methodologies. For example, Polymarket's May international platform volume, according to Dune, is approximately $7.1 billion, while some statistics include the U.S. platform ($1.77 billion) and arrive at about $8.4 billion.

Cyclical Fluctuations: Prediction market volume is significantly driven by major events. The March peak, the April-May decline, and the June recovery are all highly correlated with specific event cycles. Data from a single month is insufficient to judge long-term trends.

Growth Slope: From $1.2 billion monthly volume in early 2025 to approximately $24 billion in April 2026, prediction markets achieved 20x growth in about 15 months. Even with monthly fluctuations, the overall growth slope remains extremely steep.

Summary

Is prediction market volume large? The data gives a clear answer.

From a single-platform perspective, Polymarket's international platform monthly volume fluctuates between $7.1 billion and $10.5 billion; from an industry-wide perspective, the combined monthly volume of Kalshi and Polymarket has reached approximately $24 billion; from a growth trend perspective, industry monthly total volume increased from $1.2 billion to over $20 billion in just over a year; from a long-term expectation perspective, industry estimates suggest that prediction market annual volume in 2026 could approach $240 billion.

Gate's integration with Polymarket is a strategic deployment during this historic growth window. By lowering participation barriers, aggregating liquidity, and merging the trading experience of CEX and DeFi, Gate provides users with a convenient channel to participate in prediction markets. Prediction markets are evolving from a "crypto niche experiment" into a systemically important emerging financial sector.

Frequently Asked Questions (FAQ)

Q1: What is Polymarket's monthly trading volume approximately?

According to Dune Analytics data, Polymarket's international platform recorded $10.5 billion in March 2026, approximately $9 billion in April, and about $7.1 billion in May. Including the U.S. platform ($1.77 billion in May), the total platform monthly notional volume is higher.

Q2: How large is the overall trading volume of prediction markets?

The combined monthly trading volume of Kalshi and Polymarket reached approximately $24 billion in April 2026. Global prediction market trading volume in Q1 2026 was about $75 billion. Industry estimates suggest annual volume in 2026 could approach $240 billion.

Q3: Why did Polymarket's trading volume decline in April and May?

Main reasons include platform system technical maintenance and the user adaptation period from the full transition to the new stablecoin Polymarket USD. Additionally, the March peak ($10.5 billion) was partly driven by a concentration of specific events, so a periodic pullback is normal fluctuation.

Q4: What impact does Gate's integration with Polymarket have on trading volume?

As the first centralized exchange to integrate Polymarket, Gate significantly lowers the participation barrier for prediction markets. Users can directly trade using USDT from their Gate spot accounts without on-chain operations or gas fees. This brings incremental traffic from over 51 million potential users to Polymarket.

Q5: Can the growth in prediction market trading volume be sustained?

From a driver perspective, major events like the 2026 FIFA World Cup and U.S. midterm elections are still ongoing; institutional capital (e.g., ICE's $600 million investment) is accelerating entry; and the platform business model has shifted from free to fee-based, achieving self-sustainability. Multiple factors jointly support continued volume growth.