FillGuard

FillGuard is a web + desktop trading execution analytics platform for active retail traders and small prop teams who suspect their fills are worse than they should be. It connects to supported brokers via read-only APIs, ingests order events (submit, route, partial fills, cancels), and reconstructs the market context using tick/quote data to estimate expected vs actual execution. The app highlights patterns like systematic slippage during open/close, hidden spread costs, partial-fill penalties, and venue-specific degradation. It produces a simple “Execution Score” by symbol, time-of-day, order type, and broker route, plus alerts when execution quality deviates from your baseline. This is not a magic alpha generator; it’s a cost-control tool. Most traders don’t measure execution, and brokers rarely make it easy—so the product wins by making the invisible costs measurable and actionable.