Sources detail Kalshi's and Polymarket's efforts to undermine each other, including lobbying regulators, trying to derail deals, and waging influence campaigns
Early one morning in November 2024, Shayne Coplan, the founder of Polymarket, awoke to an unexpected visit.
Context & Ripple Effects
The conflict extends a publicly visible rivalry between Kalshi and Polymarket’s leaders, previously framed as competing visions for prediction-market growth in their CEO-level rivalry. Earlier reporting also alleged that Kalshi used paid influencers to suggest wrongdoing by Polymarket and Shayne Coplan after the FBI raid on Coplan, a prior influence-campaign episode that gives the new allegations a longer arc.
The stakes have risen alongside the platforms’ growth and financing ambitions: both were reportedly discussing valuations near $20 billion in March. That makes regulators, deal counterparties and public narratives consequential competitive assets, not peripheral concerns.
First-order effects
- Kalshi and Polymarket face a rivalry conducted through regulatory outreach, deal opposition and influence efforts, widening competition beyond attracting traders and listing markets.
- The reported tactics put each company’s partners, prospective counterparties and leadership under more adversarial pressure as the other side seeks to shape their decisions.
Second-order effects
- Fundraising and commercial negotiations may require more diligence around regulatory exposure and reputational claims, particularly while the two companies pursue large fundraising valuations.
- Competitors and prospective entrants may be pushed to differentiate through compliance posture, political relationships and trust with counterparties rather than product features alone.
Third-order effects
- If this pattern persists, prediction markets could become more structurally fragmented around regulatory legitimacy and access to institutional partners, with competitive advantage shaped partly outside the trading product.
- The episode points to a sector in which influence operations and policy advocacy can become recurring barriers to scale, though the lasting effect will depend on how regulators and counterparties respond.
The trend: Prediction markets are shifting from an early platform race toward a contest over regulated legitimacy, liquidity and institutional access.