Prediction Market Arbitrage: 10 Live Opportunities Surfaced by Star…

StartupHub.ai's proprietary cross-venue engine has once again delivered, identifying 11 prediction market arbitrage opportunities as of August 5, 2026. These opportunities arise when the combined price of 'YES' on one venue and 'NO' on another for the same real-world event totals less than $1, effectively locking in a guaranteed payout for savvy traders.

For newcomers, an arbitrage lock means buying both sides of a market for less than the maximum possible payout, guaranteeing a profit regardless of the outcome. While 10 of these spreads are live right now, market prices can move extremely fast, and opportunities may close quickly. Potential traders should also factor in fees, KYC requirements, and withdrawal limits, which can impact overall returns.

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

Will Trump recognize Somaliland? :: During Trump's term. Arbitrage: 60.8% ROI, locks 38c per $1. Buy YES on Polymarket at 8c, buy NO on Kalshi / Robinhood at 54c.
Where will Putin and Zelenskyy next meet? Will Putin and Zelenskyy meet next in Switzerland?. Arbitrage: 16.9% ROI, locks 14c per $1. Buy YES on Polymarket at 3c, buy NO on Kalshi / Robinhood at 83c.
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 leave Trump's Cabinet next? Will Chris Wright be the next person to leave the Trump Cabinet?. Arbitrage: 6.4% ROI, locks 6c per $1. Buy YES on PredictIt at 9c, buy NO on Kalshi / Robinhood at 85c.
2028 Democratic VP nominee Will Josh Shapiro be the nominee for the Vice Presidency for the Democratic party?. Arbitrage: 5.4% ROI, locks 5c per $1. Buy YES on Kalshi / Robinhood at 4c, buy NO on PredictIt at 91c.
Will Rubio and Vance both announce a run for President before 2028?. Arbitrage: 5.3% ROI, locks 5c per $1. Buy YES on Kalshi / Robinhood at 40c, buy NO on PredictIt at 55c.
Who will be the Prime Minister of Israel after the 2026 election?, Yair Lapid. Arbitrage: 5.1% ROI, locks 5c per $1. Buy YES on Polymarket at 0c, buy NO on PredictIt at 95c.
Who will win the next French presidential election?, Gérald Darmanin. Arbitrage: 4.9% 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: 3.7% ROI, locks 4c per $1. Buy YES on Polymarket at 0c, buy NO on Kalshi / Robinhood at 96c.
2028 Democratic presidential nominee Will Mark Kelly be the Democratic Presidential nominee in 2028?. Arbitrage: 3.1% ROI, locks 3c per $1. Buy YES on Polymarket at 3c, buy NO on Kalshi / Robinhood at 94c.

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: 10 Live Opportunities Surfaced by StartupHub.ai Engine

Track these live, or poll the free API