Arbitrage Alert: 6 Prediction Market Opportunities…

StartupHub.ai's proprietary cross-venue engine has surfaced six prediction market arbitrage opportunities as of July 25, 2026. These opportunities involve the same real-world event being priced on two different platforms, allowing for a guaranteed payout by simultaneously buying 'YES' on one venue and 'NO' on another for a combined cost under $1.

Five of these spreads are live right now, offering immediate potential. The sixth was seen within the last few hours and may have already closed, as these price discrepancies can be fleeting. This report details the most interesting of these opportunities, providing concrete numbers for each.

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

Who will be the Prime Minister of Israel after the 2026 election?, Benjamin Netanyahu. Arbitrage: 20.5% ROI, locks 17c per $1. Buy YES on Kalshi / Robinhood at 14c, buy NO on PredictIt at 69c.
Who will be the next Supreme Court justice? Will Emil Bove become the next Justice on the Supreme Court?. Arbitrage: 6.6% ROI, locks 6c per $1. Buy YES on Kalshi / Robinhood at 5c, buy NO on PredictIt at 89c.
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 at 4c, buy NO on PredictIt at 92c.
Who will win the 2028 US presidential election?, Gavin Newsom. Arbitrage: 3.6% ROI, locks 3c per $1. Buy YES on Polymarket at 13c, buy NO on PredictIt at 84c.
Will Kamala Harris and Gavin Newsom be the two frontrunners for the 2028 Democratic Presidential Nomination?. Arbitrage: 3.1% ROI, locks 3c per $1. Buy YES on Kalshi / Robinhood at 18c, buy NO on PredictIt at 79c.
2028 Democratic presidential nominee Will Rahm Emanuel be the Democratic Presidential nominee in 2028?. Combined cost 97c (no lock right now). Buy YES on Polymarket at 2c, buy NO on Kalshi / Robinhood at 95c.

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.

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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Arbitrage Alert: 6 Prediction Market Opportunities Surfaced Today, 5 Live Now (July 25, 2026)

Track these live, or poll the free API