What happened
Kalshi rolled out a real-time market data feed on Wednesday delivered over DoubleZero's fiber network, according to Decrypt. The service pipes the venue's sports and crypto order books to trading firms with the kind of latency profile that institutional desks demand. DoubleZero operates a dedicated fiber network built for financial data delivery, which puts Kalshi's book on the same class of infrastructure that CME and Nasdaq clients use for cash-equity and futures flow.
The rollout is aimed squarely at professional market makers and quant shops. Retail traders and smaller participants continue to access Kalshi through its standard public APIs, which sit on shared internet routes and carry the jitter and packet loss that comes with them. The feed is a paid, permissioned product.
Kalshi has not disclosed pricing publicly, and Decrypt's report does not name the launch partners, though the target customer is unambiguous: firms already quoting size on the venue that want a millisecond edge over the retail order flow.
Why it matters
Prediction markets have spent 2026 crossing the line from a novelty into a genuine venue for institutional capital. Kalshi's sports contracts have seen daily volumes that rival mid-tier crypto perpetuals on some weekends, and its Bitcoin and Ethereum event markets have become a reference point for macro desks pricing tail risk around Fed meetings and ETF flow days. That kind of flow attracts market makers.
Market makers demand infrastructure. The DoubleZero deal is Kalshi answering that demand directly. It's also a competitive signal.
Polymarket, Kalshi's biggest rival, runs on Polygon and has been building out its own institutional plumbing after the CFTC settled with it last year. A dedicated fiber feed pulls Kalshi ahead on the latency axis, at least for now. The venue that wins the market-maker mindshare wins the spreads, and the venue that wins the spreads wins the retail flow that follows.