Prediction Market Arbitrage: 8 Opportunities Surfac…

StartupHub.ai's proprietary cross-venue engine has surfaced 8 prediction market arbitrage opportunities as of August 26, 2026. These opportunities involve the same real-world event being priced on two different venues, allowing for a guaranteed payout by buying 'YES' on one and 'NO' on the other for a combined cost under $1.

An arbitrage lock is a risk-free profit opportunity where you can buy both outcomes of an event for less than the total payout, guaranteeing a return. While 7 of these spreads are live right now, prediction market prices move quickly. Any opportunities opened in the last few hours may have already closed.

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

Which party will win the 2026 US Senate election in South Carolina? for Republican. Arbitrage: 250.9% ROI, locks 72c per $1. Buy YES on Polymarket at 14c, buy NO on PredictIt at 15c.
Who will leave Trump's Cabinet next? Will Pete Hegseth be the next person to leave the Trump Cabinet?. Arbitrage: 9.3% ROI, locks 8c per $1. Buy YES on Kalshi / Robinhood at 14c, buy NO on Polymarket at 78c.
Who will leave Trump's Cabinet next? Will Doug Collins be the next person to leave the Trump Cabinet?. Arbitrage: 7.5% ROI, locks 7c per $1. Buy YES on Kalshi / Robinhood at 3c, buy NO on PredictIt at 90c.
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.
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? for Jon Ossoff. Arbitrage: 3.4% ROI, locks 3c per $1. Buy YES on Polymarket at 15c, buy NO on PredictIt at 82c.
2028 Democratic presidential nominee Will Gavin Newsom be the Democratic Presidential nominee in 2028?. Arbitrage: 3.1% ROI, locks 3c per $1. Buy YES on Kalshi / Robinhood at 13c, buy NO on PredictIt at 84c.
Where will Putin and Zelenskyy next meet? Will Putin and Zelenskyy meet next in Switzerland?. Combined cost 90c (no lock right now). Buy YES on Polymarket at 0c, 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: 8 Opportunities Surfaced, Up to 250% ROI Live Now

Track these live, or poll the free API