Signal vs Fill Review: Reading the Dashboard Without Overfitting

The signal-vs-fill dashboard compares what your strategy intended (alerts) with externally reported broker fills. It is best used as a trend tool, not a verdict on a single trade.

Metrics to track

• Fill match rate: signals that have a matching reported fill
• Slippage: difference between alert price and fill price
• Fill latency: time between alert and fill
• Price improvement: fills better than the alert price

How to interpret them

Fill match rate should be stable. Sudden drops usually point to configuration, permissions, or market hours issues. Slippage should be evaluated by symbol and volatility regime, not as a single global number. Latency is a baseline metric. Compare against your own historical median rather than a generic target.

Practical checks

1. Review missing fill matches and confirm whether external orders were rejected or never placed.
2. Filter by symbol to separate liquid from thin markets.
3. Split by order type (market vs limit).
4. Compare a normal week to a volatile week.

Limits to keep in mind

• Latency includes network and broker processing, not just webhook time
• Some alerts do not become orders by design (filters, risk rules)
• Fill prices depend on liquidity and order size

When metrics move

• Check webhook delivery logs
• Verify account permissions and buying power
• Review order type and size
• Consider tightening or widening alert filters during volatile periods

Closing note

Use the dashboard to find patterns, make one change at a time, and re-check the baseline. Consistency matters more than perfect numbers.