Prediction Markets Cross $20B Monthly Volume, Geopolitics Leads

Prediction markets are no longer a side experiment. Monthly trading volume across these platforms climbed from $1.2 billion in early 2025 to over USD 20 billion by January 2026. According to TRM Labs, that is not a slow build. It is a structural shift.

The user base grew just as fast. Unique wallets on platforms including Polymarket, LIMITLESS, Opinion Market, and predict.fun nearly tripled in the six months before February 2026. The count reached 840,000. That number points to new participants entering, not just existing traders placing bigger bets.

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Geopolitics replaced crypto as the top driver. If someone logs onto Polymarket today, Iran, Israel, and US foreign policy dominate the open markets. A single contract asking whether Israel would launch a ground offensive in Lebanon by March 31 drew $63 million in volume alone.

War Bets Are Now the Platform's Biggest Product

February 2026 told that story clearly. The top Polymarket contract that month covered US airstrikes against Iran. That single market, spread across 23 date sub-markets, pulled in $252 million in volume from 45,638 unique wallets. The Fed rate decision came second, not crypto prices.

On February 28, Polymarket set its single-day volume record. USD 425 million traded in one day. That figure beat Election Day 2024. Most of that volume came from Iran-related markets resolving at once. The Khamenei contract went from $23,000 in volume on February 27 to $29.6 million the next day. A 1,275x increase. In 24 hours.

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That October 2025 period told a different but related story. The New York City mayoral race drew $150 million in volume and over 70,000 unique wallets. The Super Bowl came next, pulling more than $88 million. Fed rate decisions attracted tens of thousands of traders. Crypto prices still appeared in the top ten, but not at the top.

Regulatory concern came alongside the growth. Nevada gaming regulators sued Kalshi in February 2026. Arizona's attorney general filed against them in March 2026. Still, volumes kept climbing. The CFTC issued Polymarket a no-action letter in January 2026 and withdrew proposed restrictions. ICE and NYSE had already signaled institutional interest in October 2025, announcing a strategic stake in Polymarket at an $8 billion valuation.

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Four Wallets Turned $40K Into $872K Before US Struck Iran

TRM Labs flagged something else in that Iran data. Four wallets entered markets priced between $0.10 and $0.80 per contract, implying probabilities of 10 to 80 percent. They redeemed at $1.00 when markets resolved. Combined, they turned roughly $40,000 into $872,000.

None of the four had notable prior trading history. All funded through the same bridge in a narrow time window. After collecting winnings, all four swept their balances and left the platform. The synchronized creation, shared funding source, and identical exit behavior raised questions about coordination or shared information, TRM said. The firm stopped short of calling it insider trading, but said on-chain data surfaces anomalies that need closer review.

That finding landed the same week Kalshi and Polymarket both announced new measures. On March 23, 2026, according to TRM Labs, both platforms publicly outlined restrictions on participants with potential access to non-public information. Blockchain transparency made those surveillance measures possible. Every fill, wallet, and funding source sits on-chain.

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The top earner on Polymarket through early 2026 made $6.2 million. That wallet traded across Fed decisions, the 2028 presidential election, and World Cup markets. It held no single focus. The second-highest earner made $3.35 million, almost entirely from algorithmic activity across Oscar markets at over one million trades. One wallet appeared for a single day, timed Ethereum price moves, banked $709,000, and exited.

What those wallets share is not a specific market. It is the ability to find mispriced probabilities and move before others do. That, according to TRM's analysis, is what separates the top 0.1 percent from the 840,000 others now active on these platforms each month.

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