Horizon Trading Solutions has expanded its electronic trading platform to support market making on Kalshi, giving institutional clients native connectivity to the CFTC-regulated prediction market as professional participation in event contracts continues to grow.
The move reflects the rapid institutionalization of prediction markets, which have evolved from niche retail products into an emerging asset class attracting proprietary trading firms, quantitative market makers and liquidity providers. As trading volumes increase, technology vendors are racing to provide the low-latency infrastructure needed to support continuous quoting, automated risk management and high-frequency trading strategies.
For Horizon, whose platform already serves market makers across equities, listed derivatives and digital assets, adding Kalshi connectivity extends its multi-asset offering into one of the fastest-growing segments of electronic trading.
Institutional Infrastructure For Event Markets
The enhanced platform enables market makers to quote, trade and hedge Kalshi’s event-driven contracts alongside traditional financial instruments through a single trading environment.
Unlike conventional futures or equity markets, prediction markets require infrastructure capable of handling rapidly changing probabilities, frequent repricing and very short-dated contracts that can resolve within hours or days.
Horizon said its platform combines native exchange connectivity with low-latency execution, high message throughput, continuous 24/7 operation and integrated risk management designed specifically for these characteristics.
According to the company, the platform allows firms to manage event contracts alongside cash equities and listed derivatives while supporting cross-venue hedging and centralized risk controls.
Andy Ross, Head of Institutional at Kalshi, said:
“The growth of institutional liquidity is an important milestone in the evolution of event markets. Horizon Trading Solutions’ native connectivity helps professional market makers participate more efficiently and deepen liquidity across Kalshi markets.”
Prediction Markets Continue To Mature
Prediction markets have become one of the fastest-growing areas of exchange innovation during the past two years. Initially focused on elections and economic releases, regulated event contracts now cover a broad range of financial, political and sporting outcomes.
As volumes have increased, institutional firms have begun treating these products more like traditional exchange-traded instruments than speculative novelty markets.
That shift has created demand for professional trading technology capable of handling continuous market making, sophisticated pricing models and automated inventory management.
Sylvain Thieullent, Chief Executive Officer of Horizon Trading Solutions, said:
“It is clear that event-driven markets are becoming increasingly important for institutional market participants. We are enabling market makers to provide liquidity on Kalshi with institutional-grade infrastructure that scales with growing demand while addressing the unique challenges of event contracts, including pricing, risk management, and hedging very short-dated exposures.”
The announcement follows a series of infrastructure investments surrounding prediction markets as exchanges, brokers and trading technology providers position themselves for growing institutional demand.
Technology Providers Are Expanding Around Kalshi
Kalshi has increasingly become the focal point of that expansion.
Earlier this year, Trading Technologies announced support for Kalshi’s markets through its professional trading platform, giving institutional traders access to regulated event contracts alongside futures and options. More recently, Plus500 expanded its U.S. offering by introducing Kalshi-powered sports event contracts, highlighting how brokers are beginning to incorporate prediction markets into their retail product suites.
Technology vendors are now following a similar path, focusing less on the contracts themselves and more on providing the execution, connectivity and risk infrastructure required by professional trading firms.
For market makers, prediction markets introduce operational challenges that differ from traditional asset classes. Prices represent probabilities rather than valuations, liquidity can shift rapidly as new information emerges, and contracts often expire within days or even hours. Those characteristics place greater emphasis on automated pricing engines, low-latency execution and real-time risk monitoring.
By integrating Kalshi into its existing multi-asset platform, Horizon aims to allow firms already active in equities and derivatives to participate in prediction markets without deploying separate technology stacks.
Prediction Markets Are Becoming Another Institutional Asset Class
The broader significance of the announcement extends beyond a single exchange integration.
Prediction markets are increasingly being viewed as another electronically traded asset class requiring the same institutional infrastructure available in equities, options and futures.
As liquidity providers continue entering the market, competition is shifting toward execution quality, latency, connectivity and risk management rather than simply offering access to event contracts.
For trading technology providers, supporting prediction markets is becoming less about experimentation and more about ensuring clients can participate in a segment that continues to attract growing institutional interest. Horizon’s latest integration reflects that transition, positioning event contracts alongside more established financial instruments within professional electronic trading workflows.
