Binance’s 24/7 equity perps price US market opening gaps long before the stock market bell rings. But can a cross-venue market maker use Binance equity perp fair value to quote Polymarket’s daily stock prediction books at a profit?

We analyzed 1,537 market-nights and ran a fill-by-fill backtest on 1,313 historical order books (Jan–Oct 2026) to test latency, risk shields, and strategy decay.

📊 Key Quantitative Findings

• 🎯 The Perp Leads Probability: When Binance perp-implied probability and Polymarket disagree by >5¢, the market resolves on Binance’s side 62.5% of the time during regular trading hours.

• ⚡ Speed is Everything: Quote updates at 250 ms to 1 s generated positive in-sample returns (+$6.2k, Sharpe 1.7). Sinking to 60 s updates flipped P&L to -$19.3k due to adverse selection from faster takers.

• 🛡️ Perp Hedges Cost Too Much: Delta-hedging a small prediction book on Binance perps cost $26k–$83k in fees and execution slippage, eating all maker edge.

• 📉 Out-of-Sample Decay: The strategy edge faded rapidly after mid-June and flipped negative out-of-sample as institutional participants and faster bots closed the latency window.

📖 Read the full deep dive with open-source code, backtests, and placebo verification on Dev.to:

👉 https://dev.to/followsm/building-a-cross-venue-market-maker-pricing-polymarkets-equity-books-off-binance-perps-1316

#BinancePerps #Polymarket #MarketMaker #QuantitativeTrading #AlgorithmicTrading