Two-Sided Spread Market Making

Places hedged two-sided limit orders on 15-minute crypto markets to capture the spread with controlled entry costs.

This bot acts as a market maker on Polymarket's 15-minute crypto binary options by simultaneously placing buy and sell limit orders around the mid-price. The spread is set to capture a profit margin (e.g., 0.3-0.8%) while keeping the net entry cost below a user-defined limit to hedge risk. If both sides fill, the bot holds a hedged position until settlement or convergence. Exit occurs automatically at expiry. Backtests show modest but steady returns (1-3% monthly) with minimal directional risk, though capital efficiency is low. Built with TypeScript and Gamma API, featuring automated order refresh and balance management.