NextFin News - In an industry defined by regulatory skirmishes and a cutthroat race for liquidity, the two most prominent rivals in the prediction market space have found a rare point of convergence. Tarek Mansour, CEO of Kalshi, and Shayne Coplan, CEO of Polymarket, have both committed capital to 5(c) Capital, a new $35 million venture fund dedicated exclusively to the burgeoning prediction market ecosystem. The fund, launched by former Kalshi executives Adhi Rajaprabhakaran and Noah Zingler-Sternig, signals a strategic shift from platform-level competition to the construction of a broader financial infrastructure that could finally move event-based trading into the institutional mainstream.
The timing of this alliance is as notable as its participants. On March 23, 2026, as Kalshi reportedly seeks a $22 billion valuation and Polymarket eyes a $20 billion tag, the two leaders are backing a vehicle designed to fund the "second- and third-order effects" of their own success. Named after the regulatory clause governing certain prediction market activities, 5(c) Capital plans to back approximately 20 startups. The focus is not on building more exchanges, but on the plumbing: market makers, index designers, and data aggregators that provide the depth and reliability institutional traders demand. Joining Mansour and Coplan in the cap table are venture heavyweights including Marc Andreessen and Ribbit Capital’s Micky Malka, suggesting that the "smart money" now views prediction markets not as a niche gambling product, but as a foundational layer of price discovery.
This sudden outbreak of cooperation follows years of friction. Kalshi, the regulated U.S. incumbent, and Polymarket, the crypto-native giant that dominated the 2024 election cycle from offshore, have historically traded barbs over compliance and market integrity. However, the sheer scale of the current market—where billions of dollars now hinge on everything from Federal Reserve pivots to geopolitical flashpoints—has created a mutual necessity. For these platforms to justify their multi-billion-dollar valuations, they need a robust ecosystem of third-party providers. A market is only as good as its liquidity, and by backing 5(c) Capital, Mansour and Coplan are effectively outsourcing the development of the professional tools required to attract the next wave of capital.
The move also reflects a maturing regulatory landscape under U.S. President Trump. Since the 2025 inauguration, the administration’s push for financial deregulation has provided a tailwind for event-based contracts, which were once viewed with skepticism by the CFTC. By naming the fund after a regulatory provision, Rajaprabhakaran and Zingler-Sternig are signaling a "compliance-first" investment thesis. This approach aims to bridge the gap between the wild-west energy of decentralized platforms and the rigid requirements of Wall Street. If 5(c) Capital succeeds in seeding a new class of institutional-grade market makers, the volatility that often plagues smaller event contracts could be smoothed out, making these markets more attractive for hedging real-world corporate risks.
The broader implications for the fintech sector are significant. We are seeing the birth of a verticalized venture model where the winners of a first-generation technology provide the seed corn for the second. While Kalshi and Polymarket will continue to fight for every dollar of retail volume, their joint support for 5(c) Capital suggests they recognize a fundamental truth: the ceiling for prediction markets is far higher if they function as a unified asset class rather than a fragmented collection of warring platforms. The real test will be whether these new startups can provide the transparency and stability needed to turn "betting on the news" into a standard component of a diversified portfolio.
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