# Prediction Market Arbitrage: 7 Opportunities Live Right Now _Our cross-venue engine has identified 7 live prediction market arbitrage opportunities as of August 21, 2026, offering guaranteed payouts._ **Published:** 2026-08-21 **Source:** https://www.startuphub.ai/ai-news/prediction-markets/2026/prediction-market-arbitrage-7-opportunities-live-right-now --- StartupHub.ai's proprietary cross-venue engine has surfaced seven live prediction market arbitrage opportunities as of August 21, 2026. These opportunities involve the same real-world event being priced on two different prediction market venues, allowing for a guaranteed payout by simultaneously buying 'YES' on one market and 'NO' on the other for a combined cost under $1. This strategy, known as an arbitrage lock, capitalizes on temporary price discrepancies. While these spreads can close quickly, and factors like fees, KYC requirements, and withdrawal limits can impact actual returns, these current opportunities present a fascinating look at market inefficiencies. Arbitrage ROI by event. Where will Putin and Zelens...: ROI % 440.54. Will Trump recognize Somali...: ROI % 57.98. Where will Putin and Zelens...: ROI % 17.3. French presidential electio...: ROI % 7.35. Who will leave Trump's Cabi...: ROI % 5.26. Who will win the next Frenc...: ROI % 5.1. Cross-venue spreads on August 21, 2026. Source: StartupHub.ai arbitrage engine. **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: 440.5% ROI, locks 82c per $1. Buy YES on [Kalshi / Robinhood](https://kalshi.com/markets/kxputinzelenskyylocation) at 10c, buy NO on [Polymarket](https://polymarket.com/event/where-will-zelenskyy-and-putin-meet-next?via=startup-hub-ai) at 9c. - **Will Trump recognize Somaliland? :: During Trump's term**. Arbitrage: 58.0% ROI, locks 37c per $1. Buy YES on [Polymarket](https://polymarket.com/event/will-trump-recognize-somaliland-before-2027?via=startup-hub-ai) at 8c, buy NO on [Kalshi / Robinhood](https://kalshi.com/markets/kxrecogsomali) at 55c. - **Where will Putin and Zelenskyy next meet? Will Putin and Zelenskyy meet next in Switzerland?**. Arbitrage: 17.3% ROI, locks 15c per $1. Buy YES on [Polymarket](https://polymarket.com/event/where-will-zelenskyy-and-putin-meet-next?via=startup-hub-ai) at 0c, buy NO on [Kalshi / Robinhood](https://kalshi.com/markets/kxputinzelenskyylocation) at 85c. - **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](https://polymarket.com/event/next-french-presidential-election?via=startup-hub-ai) at 0c, buy NO on [Kalshi / Robinhood](https://kalshi.com/markets/kxfrpresadvance) at 93c. - **Who will leave Trump's Cabinet next? Will Chris Wright be the next person to leave the Trump Cabinet?**. Arbitrage: 5.3% ROI, locks 5c per $1. Buy YES on [PredictIt](https://www.predictit.org/markets/detail/8850/Who-will-be-the-next-Cabinet-member-to-leave-office) at 9c, buy NO on [Kalshi / Robinhood](https://kalshi.com/markets/kxcabout) at 86c. - **Who will win the next French presidential election?, Gérald Darmanin**. Arbitrage: 5.1% ROI, locks 5c per $1. Buy YES on [Polymarket](https://polymarket.com/event/next-french-presidential-election?via=startup-hub-ai) at 0c, buy NO on [PredictIt](https://www.predictit.org/markets/detail/8766/Who-will-win-the-next-French-presidential-election) at 95c. - **Who will win the 2028 Democratic presidential nomination?, Jon Ossoff**. Arbitrage: 3.1% ROI, locks 3c per $1. Buy YES on [Polymarket](https://polymarket.com/event/democratic-presidential-nominee-2028?via=startup-hub-ai) at 14c, buy NO on [PredictIt](https://www.predictit.org/markets/detail/8153/Who-will-win-the-2028-Democratic-presidential-nomination) at 83c. [See the full live arbitrage board](https://www.startuphub.ai/arbitrage) or poll the free [JSON API](https://www.startuphub.ai/api/v1/arbitrage). ## 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](https://www.startuphub.ai/arbitrage), 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](https://www.startuphub.ai/api-docs/reference/arbitrage) or open the [live JSON endpoint](https://www.startuphub.ai/api/v1/arbitrage). Focused guides: [Polymarket arbitrage](https://www.startuphub.ai/arbitrage/polymarket), [Kalshi arbitrage](https://www.startuphub.ai/arbitrage/kalshi), and the [arbitrage bot API](https://www.startuphub.ai/arbitrage/bot). *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.* --- Original analysis from [startuphub.ai](https://www.startuphub.ai), the #1 AI startup directory. © StartupHub.ai. All rights reserved. You may not republish this article in full without a license. Search engines and AI research tools may crawl and summarize for reference. Bulk reproduction or model training on this content requires a license. See https://www.startuphub.ai/terms.