ValthorLabs

Tools / Execution & Broker

Execution Cost Stress Analyzer

Test whether declared gross expectancy survives wider spreads, higher commission, slippage and an explicit adverse-fill allowance.

Deterministic model Cost components exposed Local snapshot

Declared execution assumptions

Values are calculated locally and are not uploaded or retained.

Cost resilience

Baseline net expectancy--per trade
Stressed net expectancy--per trade
Stress drag across sample--over modeled trades
Cost headroom--before break-even

Scenario ladder

See where execution changes the conclusion.

Moderate and severe scenarios are derived from the same declared components. They are sensitivity cases, not estimates of a specific broker.

ScenarioAll-in costNet / tradeSample resultEdge retained
Baseline--------
Moderate stress--------
Severe stress--------

Interpretation boundary

Gross expectancy must come from a separately documented test. Costs should be calibrated from comparable symbol, account and execution conditions where possible, then stressed beyond the observed baseline.

Review trigger

When stressed expectancy is near or below zero, inspect the system's execution dependence before advancing its validation status.