This document discusses quantitative methods and metrics that can be used for value chain analysis (VCA). It notes that while qualitative VCA provides useful descriptions, it is limited in its ability to measure chain performance or evaluate the impact of investments. The document then introduces some quantitative performance metrics and tools that can be used to assess value chain performance and compare different investment options for a value chain. These include metrics to measure material and financial flows, tools like system dynamics modeling to capture sector-wide dynamics and impacts of interventions over time, and other optimization models from operations research.