Real-Time Risk Assessment Portfolio Microservice Architecture

Design a type-safe TypeScript microservice for real-time portfolio risk calculation using Nest.js. Implement a generic risk assessment algorithm that can handle multiple asset classes (stocks, bonds, derivatives) with compile-time type checking. The service must support concurrent calculation, have robust error handling for financial data parsing, and generate immutable risk reports with strict typing. Include performance benchmarks and demonstrate how generics can create a flexible risk calculation framework.