Kalshi, the event contracts exchange, has begun streaming full order book data to institutional traders through DoubleZero, a network built for low-latency data distribution. The move gives professional traders a complete view of buy and sell orders on Kalshi's prediction markets, a level of detail that was previously unavailable to them.
What the full order book shows
The stream includes all resting orders, with prices and sizes, updated in real time. That means institutional clients can see exactly how much liquidity sits at each price level, and how it shifts as trades execute. For firms that need to gauge market depth before committing capital, this is a significant upgrade from partial or delayed data.
Previously, institutional traders had to work with less granular information, which made it harder to time entries and exits. Now they can watch the book fill and thin out in real time, giving them a clearer picture of supply and demand on Kalshi's markets.
Why DoubleZero matters
DoubleZero is designed to move data quickly and efficiently, cutting the lag between order placement and data delivery. That's crucial for firms that rely on algorithmic strategies, where even milliseconds can matter. By routing order book streams through DoubleZero, Kalshi can offer a faster, more reliable feed than a standard API might provide.
The network's focus on low latency is a natural fit for institutional trading, where speed is often the difference between a good fill and a missed opportunity. Kalshi's decision to use DoubleZero suggests the exchange is serious about courting professional money.
A step toward more institutional participation
With full order book access, institutional traders can better assess risk and execute larger trades without moving the market against themselves. This could encourage more professional money to flow into prediction markets, which have traditionally been dominated by retail participants. It also increases transparency, as all market participants can see the same depth.
The move comes as Kalshi continues to expand its offerings in the event contracts space. Whether this will draw in hedge funds or proprietary trading desks remains an open question, but the infrastructure is now in place for them to trade with more confidence.
Kalshi has not said whether the full order book stream will be extended to retail traders. For now, the service is limited to institutional clients, and it's unclear if that will change.
