# Prediction Market Arbitrage: 7 Opportunities Surfaced Today, 6 Live Now (July 14, 2026) _Our cross-venue engine identified 7 prediction market arbitrage opportunities today, where buying YES on one market and NO on another for the same event costs under $1, guaranteeing a payout. Six of these spreads are currently live._ **Published:** 2026-07-14 **Source:** https://www.startuphub.ai/ai-news/prediction-markets/2026/prediction-market-arbitrage-7-opportunities-surfaced-today-6-live-now-july-14-2026 --- Our proprietary cross-venue engine has once again scanned the prediction market landscape, surfacing seven distinct arbitrage opportunities as of July 14, 2026. These opportunities arise when the combined price of 'YES' on one platform and 'NO' on another for the identical real-world event totals less than $1, effectively locking in a guaranteed profit. Six of these spreads are live right now, offering a chance to capitalize on market inefficiencies across Polymarket, Kalshi/Robinhood, and PredictIt. Spreads can close rapidly as market participants react, and it's crucial to remember that fees, KYC requirements, and withdrawal limits can impact actual returns. This information is for informational purposes only and does not constitute financial advice. Arbitrage ROI by event. Will Alexandria Ocasio-Cort...: ROI % 63.93. Who will win the 2028 US pr...: ROI % 4.66. 2028 Democratic presidentia...: ROI % 4.17. 2028 Democratic VP nominee...: ROI % 4.06. 2028 Democratic presidentia...: ROI % 3.15. 2028 Democratic presidentia...: ROI % 3.15. Cross-venue spreads on July 14, 2026. Source: StartupHub.ai arbitrage engine. **Live arbitrage right now** These update automatically. Tap a leg to open the venue. Not financial advice. - **Will Alexandria Ocasio-Cortez win the 2028 Democratic presidential nomination?**. Arbitrage: 63.9% ROI, locks 39c per $1. Buy YES on [PredictIt](https://www.predictit.org/markets/detail/8153/Who-will-win-the-2028-Democratic-presidential-nomination) at 12c, buy NO on [Kalshi / Robinhood](https://kalshi.com/markets/kxaocsenate) at 49c. - **Who will win the 2028 US presidential election?, Gavin Newsom**. Arbitrage: 4.7% ROI, locks 4c per $1. Buy YES on [Polymarket](https://polymarket.com/event/will-gavin-newsom-win-the-2028-us-presidential-election) at 12c, buy NO on [PredictIt](https://www.predictit.org/markets/detail/8171/Who-will-win-the-2028-US-presidential-election) at 84c. - **2028 Democratic presidential nominee Will Alexandria Ocasio-Cortez be the Democratic Presidential nominee in 2028?**. Arbitrage: 4.2% ROI, locks 4c per $1. Buy YES on [PredictIt](https://www.predictit.org/markets/detail/8171/Who-will-win-the-2028-US-presidential-election) at 11c, buy NO on [Kalshi / Robinhood](https://kalshi.com/markets/kxpresnomd) at 85c. - **2028 Democratic VP nominee Will Josh Shapiro be the nominee for the Vice Presidency for the Democratic party?**. Arbitrage: 4.1% ROI, locks 4c per $1. Buy YES on [Kalshi / Robinhood](https://kalshi.com/markets/kxvpresnomd) at 4c, buy NO on [PredictIt](https://www.predictit.org/markets/detail/8799/Who-will-win-the-2028-Democratic-vice-presidential-nomination) at 92c. - **2028 Democratic presidential nominee Will Rahm Emanuel be the Democratic Presidential nominee in 2028?**. Arbitrage: 3.1% ROI, locks 3c per $1. Buy YES on [Polymarket](https://polymarket.com/event/will-rahm-emanuel-win-the-2028-democratic-presidential-nomination-299) at 2c, buy NO on [Kalshi / Robinhood](https://kalshi.com/markets/kxpresnomd) at 95c. - **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](https://polymarket.com/event/will-mark-kelly-win-the-2028-democratic-presidential-nomination-479) at 1c, buy NO on [PredictIt](https://www.predictit.org/markets/detail/8153/Who-will-win-the-2028-Democratic-presidential-nomination) at 96c. - **2028 Democratic VP nominee Will Alexandria Ocasio-Cortez be the nominee for the Vice Presidency for the Democratic party?**. Combined cost 103c (no lock right now). Buy YES on [Kalshi / Robinhood](https://kalshi.com/markets/kxvpresnomd) at 8c, buy NO on [PredictIt](https://www.predictit.org/markets/detail/8799/Who-will-win-the-2028-Democratic-vice-presidential-nomination) at 95c. [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). *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. 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