DoubleZero Brings Low-Latency Data to Kalshi

DoubleZero announced on Sept. 9 that it had added Kalshi's election and politics markets to Edge, a dedicated network service carrying live order-book data. The feed shows the prices and quantities traders are willing to buy or sell, helping trading firms react before displayed quotes disappear.

A Kalshi yes-or-no contract pays $1 if its outcome occurs and nothing if it does not. Buying at 60 cents implies a roughly 60% probability before fees, but a trader can also exit early. Buying 1,000 contracts at 60 cents and selling them at 65 cents would produce a $50 gain before fees, regardless of the eventual election result.

Why it matters

Election markets serve two different audiences. Some participants hold positions for months based on a political view, while others trade short-term price changes. Faster data is more valuable to the second group, especially market makers that continually quote buy and sell prices.

The edge comes from the order book. Its best bid is the highest buyer offer, while its best offer is the lowest seller price. The gap is the spread, and the available quantities show how much can trade before the market moves to another price. When news changes a candidate's perceived odds, traders using stale data can try to buy contracts that have already been taken.

DoubleZero's feed does not provide insider information or a reserved place in Kalshi's queue. Software must still interpret updates, make decisions and send orders, while Kalshi's price-time priority determines execution. The service competes with Kalshi's existing WebSocket connection by focusing on how quickly and reliably data reaches a trading system.

Market impact

For market makers, faster updates can reduce losses from stale quotes and support narrower spreads. If competition passes those savings through, retail bettors could receive better prices when entering or leaving positions. But the subscription, trading software and capital required to use the feed effectively leave professional firms with significant advantages.

The benefit remains a proposition that needs to be tested during major political news events. A price backed by only a few contracts may not support a larger trade, and a sudden move can reflect sellers withdrawing rather than new election information. Faster distribution can improve access to public data, but it does not make the probability more accurate or resolve separate concerns around prohibited information and market surveillance.