Prediction Market Arbitrage: 6 Opportunities Live N…

StartupHub.ai's cross-venue engine has surfaced six live prediction market arbitrage opportunities as of August 23, 2026. These opportunities involve the same real-world event being priced on different prediction market venues such as Polymarket, Kalshi/Robinhood, and PredictIt.

An arbitrage lock occurs when buying a 'YES' contract on one venue and a 'NO' contract on another for the same event totals less than $1, guaranteeing a profit regardless of the outcome. Spreads can close rapidly, and potential returns may be affected by fees, KYC requirements, and withdrawal limits. This information is for informational purposes only and is not financial advice.

Live arbitrage right now These update automatically. Tap a leg to open the venue. Not financial advice.

Where will Putin and Zelenskyy next meet? Will Putin and Zelenskyy meet next in Switzerland?. Arbitrage: 24.2% ROI, locks 19c per $1. Buy YES on Polymarket at 1c, buy NO on Kalshi / Robinhood at 80c.
French presidential election: who will advance? Will François Hollande qualify for the runoff in the 2027 French presidential election?. Arbitrage: 7.4% ROI, locks 7c per $1. Buy YES on Polymarket at 0c, buy NO on Kalshi / Robinhood at 93c.
Who will win the next French presidential election?, Gérald Darmanin. Arbitrage: 5.1% ROI, locks 5c per $1. Buy YES on Polymarket at 0c, buy NO on PredictIt at 95c.
Where will Putin and Zelenskyy next meet? Will Putin and Zelenskyy meet next in Ukraine?. Arbitrage: 3.9% ROI, locks 4c per $1. Buy YES on Polymarket at 0c, buy NO on Kalshi / Robinhood at 96c.
Who will win the 2028 Democratic presidential nomination?, Jon Ossoff. Arbitrage: 3.4% ROI, locks 3c per $1. Buy YES on Polymarket at 15c, buy NO on PredictIt at 82c.
Who will be the next Supreme Court justice? Will Aileen Cannon become the next Justice on the Supreme Court?. Arbitrage: 3.1% ROI, locks 3c per $1. Buy YES on PredictIt at 7c, buy NO on Kalshi / Robinhood at 90c.

See the full live arbitrage board or poll the free JSON API.

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.

Focused guides: Polymarket arbitrage, Kalshi arbitrage, and the arbitrage bot API.

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.

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Prediction Market Arbitrage: 6 Opportunities Live Now

Track these live, or poll the free API