Horizon and Elwood add Kalshi connectivity for institutional desks
Horizon Trading Solutions expanded its electronic trading platform July 9 to support market making on Kalshi, the CFTC-regulated prediction market exchange. The integration gives institutional traders direct connectivity to Kalshi's event-contract markets through Horizon's infrastructure. Separately, Elwood is adding platform connectivity to Kalshi for institutional trading desks, providing execution, portfolio, risk, and reconciliation tooling for CFTC-regulated event contracts. Both integrations signal growing institutional infrastructure interest in regulated event-contract venues.
For Kalshi, the back-to-back infrastructure additions turn the recent market-maker desk builds into executable reality. DRW, Wintermute, and IMC need direct electronic pipes to place and manage quotes at scale; Horizon and Elwood supply those rails. The timing tightens: Kalshi's new professional trading interface and AI stress-testing tools are built for this user class, but the platform must prove it can support institutional-size positions without slippage or operational failure.
If the connectivity performs, Kalshi becomes a genuine alternative to traditional futures venues for event-driven macro exposure. If it falters, the desk flow that recently arrived can exit as quickly as it came, leaving Kalshi with sunk infrastructure costs and a credibility gap against Polymarket's parallel push for block-size liquidity. The Bernstein M&A valuation thesis hinges on this execution window.