Prediction Market Arbitrage: 8 Live Opportunities S…

For those new to the concept, a prediction market arbitrage lock occurs when you can buy 'YES' on one platform and 'NO' on another for the same real-world event, with the combined cost being less than $1. This strategy guarantees a payout regardless of the outcome, as one of your contracts will always resolve to $1.

As of August 13, 2026, StartupHub.ai's cross-venue engine has surfaced 8 such opportunities across Polymarket, Kalshi/Robinhood, and PredictIt. These spreads can close rapidly, and potential profits 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 Ukraine?. Arbitrage: 471.4% ROI, locks 83c per $1. Buy YES on Kalshi / Robinhood at 9c, buy NO on Polymarket at 9c.
Will Trump recognize Somaliland? :: During Trump's term. Arbitrage: 60.5% 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: 8.7% ROI, locks 8c per $1. Buy YES on Polymarket at 3c, buy NO on Kalshi / Robinhood at 89c.
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.
2028 Democratic VP nominee Will Josh Shapiro be the nominee for the Vice Presidency for the Democratic party?. Arbitrage: 5.5% ROI, locks 5c per $1. Buy YES on Kalshi / Robinhood at 4c, buy NO on PredictIt at 91c.
Who will win the next French presidential election?, Gérald Darmanin. Arbitrage: 5.0% ROI, locks 5c per $1. Buy YES on Polymarket at 0c, buy NO on PredictIt at 95c.
Who will win the 2028 US presidential election?, Gavin Newsom. Arbitrage: 3.9% ROI, locks 4c per $1. Buy YES on Polymarket at 9c, buy NO on PredictIt at 87c.
Who will be elected Los Angeles mayor in 2026?, Karen Bass. Arbitrage: 3.6% ROI, locks 4c per $1. Buy YES on PredictIt at 62c, buy NO on Polymarket at 35c.

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 Live Opportunities Surfaced August 13, 2026

Track these live, or poll the free API