Prediction Market Arbitrage: Four Opportunities Live on July 16, 2026 (July 16, 2026)

StartupHub.ai's proprietary cross-venue engine has surfaced four live prediction market arbitrage opportunities as of July 16, 2026. These opportunities involve the same real-world event being priced on two different venues, such as Polymarket, Kalshi/Robinhood, or PredictIt, where buying 'YES' on one and 'NO' on the other totals less than $1.

For newcomers, an arbitrage lock occurs when you can buy a 'YES' contract on one platform and a 'NO' contract for the same event on another, with the combined cost being less than $1, guaranteeing a profit regardless of the outcome. It's important to remember that spreads can close rapidly, and fees, KYC requirements, and withdrawal limits can impact actual returns. This information is not financial advice.

Track these live, or poll the free API

The board above refreshes on its own, so this page stays current long after today. The full cross-venue feed lives on the arbitrage board, and every match is also a free JSON API and an MCP tool, so a trading agent can poll live Polymarket, Kalshi and PredictIt arbitrage opportunities and act on them.

curl https://www.startuphub.ai/api/v1/arbitrage?arbs_only=1

Read the arbitrage API reference or open the live JSON endpoint.

Informational feed, not financial advice. Live arbitrages are often fleeting, and fees, gas, KYC and withdrawal limits eat into the spread. Verify each market’s resolution rules and costs before trading.