Railbird raised $500,000 in a pre-seed round in March 2022 led by Y Combinator and Liquid 2 Ventures. The company operated with a team of 11 employees while building its regulated prediction market platform.

DraftKings announced its acquisition of Railbird on October 21, 2025. Railbird received its CFTC Designated Contract Market license in June 2025.

Railbird is a CFTC-regulated exchange for trading event contracts tied to real-world outcomes. Contracts are binary, paying $0 or $100 at resolution, and trade prices map to market-implied probabilities.

Users complete KYC verification and fund accounts via ACH transfers from U.S. bank accounts. The platform organizes markets across verticals like finance, technology, and entertainment, with events ranging from economic indicators to corporate milestones.

The trading interface resembles traditional financial markets. Users select YES or NO positions on events, enter contract quantities, and submit market or limit orders. Railbird's matching engine processes trades in real-time, updating order books continuously.

Positions can be closed early through opposite trades or held until settlement. Winners receive $100 per contract while losers get $0, with automatic cash settlement and margin release. The exchange runs surveillance, risk management, and audit trails through its infrastructure.

The binary structure caps maximum loss at $100 per contract, making per-contract risk explicit for retail users and providing hedging tools for businesses exposed to specific event risks.

Railbird operates as a B2C two-sided marketplace using a maker-taker fee structure. The platform charges approximately 2% transaction fees that vary based on event probability, generating revenue from trading volume rather than subscription fees.

The company maintains minimal transaction costs compared to traditional betting platforms, focusing on high-volume, low-margin trades. This approach differentiates Railbird from state-regulated gaming operators that sustain higher margins but face geographic restrictions.

Federal CFTC licensing enables nationwide availability across all 50 states without state-by-state gaming approvals. This regulatory advantage provides broader market access than competitors operating under state gaming frameworks.

The platform integrates diverse data sources for objective outcome verification, reducing operational overhead for manual settlement processes. Clearing operations run through a registered derivatives clearing organization, ensuring institutional-grade trade processing and risk management.

Revenue scales directly with trading volume, creating alignment between user engagement and company growth. The model supports both retail speculation and institutional hedging use cases, broadening the addressable market beyond traditional prediction market participants.

Kalshi has over 60% global volume and $50 billion in annualized turnover in regulated prediction markets. The company raised a $300 million Series D at a $5 billion valuation and has Robinhood integration, which reduces customer acquisition costs.

PredictIt relaunched in October 2025 after settling CFTC litigation, focusing exclusively on political markets with lower contract caps and a brand known among political bettors. The platform targets academic and research communities rather than broader retail trading.

The CME-FanDuel joint venture combines CME's clearing infrastructure with FanDuel's 12 million sportsbook accounts. This partnership could undercut smaller exchanges on fees and use established customer relationships for faster distribution.

Polymarket has approximately 37% market share among offshore prediction markets but faces U.S. regulatory restrictions. The platform's pending acquisition of QCX, a CFTC-licensed DCM, and potential $2 billion investment from ICE could enable U.S. market re-entry.

Token-based liquidity is a differentiator for crypto-native platforms, though compliance costs will increase as these operators pursue U.S. licensing. The regulatory arbitrage that enabled offshore growth is diminishing as domestic alternatives scale.

Established players like DraftKings, FanDuel, Interactive Brokers, and Robinhood are integrating prediction markets through partnerships or acquisitions rather than building from scratch. This vertical integration compresses take rates and increases customer acquisition costs for standalone platforms.

These incumbents bring large existing customer bases and established payment processing, creating distribution advantages that pure-play prediction market operators often cannot match independently.

Railbird's CFTC no-action relief covers both binary options and variable-payout structures, enabling contracts that scale payouts with event magnitude rather than simple yes-no outcomes. This expands addressable markets from basic prediction into sophisticated economic hedging instruments.

The DraftKings acquisition opens sports, entertainment, and election markets within an established mobile app ecosystem. Integration with DraftKings' 5-10 million daily active users provides immediate distribution for awards shows, esports, and political events.

Corporate hedging represents significant expansion potential as event-driven industries seek protection against outcomes not covered by traditional futures markets. Film distributors, crypto miners, and climate-exposed utilities could use bespoke markets for revenue protection.

DraftKings' 3.5 million monthly sportsbook users provide immediate cross-selling opportunities into prediction markets. The planned DraftKings Predictions app could convert existing customers familiar with event-based wagering into prediction market participants.

Institutional liquidity providers already connected to CME infrastructure can extend market-making activities to smaller DCMs like Railbird. This professional participation improves two-sided depth and reduces bid-ask spreads for retail users.

Robinhood's integration attempts with Kalshi demonstrate that over 20 million U.S. retail accounts show interest in bite-sized event products, suggesting substantial untapped demand beyond current prediction market participants.

Railbird's CFTC DCM status provides internationally recognized regulatory credentials for expansion into Canada and the U.K. Several Canadian provinces already permit event contract distribution through existing DraftKings sportsbook licenses.

The U.K. FCA sandbox has welcomed binary options from CME and similar operators, offering potential passporting opportunities once clearing connectivity is established. Australia represents the fastest-growing segment in global prediction market forecasts.

The global prediction market industry is projected to grow from $1.6 billion in 2024 to $16.6 billion by 2030, with significant demand emerging outside North America as regulatory frameworks develop internationally.

Regulatory uncertainty: Despite CFTC approval, prediction markets face ongoing legal challenges as state and federal authorities continue to develop frameworks for this category. Changes in regulatory interpretation could restrict market types or impose additional compliance costs that impact profitability.

Platform integration: Integrating Railbird's derivatives-style risk management and clearing processes into DraftKings' gaming-focused user experience presents technical and operational challenges. Poor integration could alienate existing users or fail to convert DraftKings customers to prediction market trading.

Market concentration: The prediction market space is consolidating around a few large players with regulatory and distribution advantages. Smaller platforms risk being squeezed out as incumbents like Kalshi and integrated operators like the CME-FanDuel partnership capture increasing market share via scale economics and customer access.