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Open-source arb-engine offers fee-aware arbitrage tools for Kalshi, Polymarket and Robinhood markets

  • Open-source arb-engine offers fee-aware arbitrage tools for Kalshi, Polymarket and Robinhood markets — A GitHub project called arb-engine describes a fee-aware arbitrage and fair-value engine for sports prediction markets across Kalshi, Polymarket and Robinhood. It notes that tennis markets on Robinhood are resold from Kalshi's book and that walkover settlement rules differ between venues. (GitHub)

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