Eventarb is a multi-platform arbitrage calculator that identifies price discrepancies and spreads between Kalshi, Polymarket, and Robinhood event contracts.
About Eventarb
What is Eventarb?
Eventarb is a multi-platform arbitrage calculator for event contracts. It identifies price discrepancies between prediction markets such as Kalshi, Polymarket, and Robinhood. The tool has features to evaluate spreads and includes transaction fees in its math. Users enter contract lengths and principal amounts to find profitable trades.
The software calculates opportunity cost for specific binary and multiple choice markets. It has a manual entry system for market prices and an alert system for new opportunities. This tool focuses on the technical data required for professional edge execution.
Key Features
Pros & Cons
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Cross-platform calculationsUsers compare prices across Kalshi, Polymarket, and Robinhood to find profit discrepancies between different prediction exchanges.
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Fee adjusted spreadsThe calculator includes transaction costs in its formulas to show the actual net profit of a trade.
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Automated email alertsA notification system sends messages to traders when new arbitrage opportunities meet their specific criteria.
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Opportunity cost analysisThe math engine accounts for the duration of the contract to help traders weigh returns against the time capital is locked.
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Manual data entryUsers must enter prices for each market by hand because the calculator lacks live price feeds from the exchanges.
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Limited exchange supportThe interface focuses on three specific platforms and excludes other major prediction markets like PredictIt or Manifold Markets.
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Basic technical supportSupport options are limited to a bug report link and a contact form on a site run by a small two person team.
