Portfolio risk management and analytics. Use when user asks to calculate VaR, run Monte Carlo, stress test, optimize with Risk Parity / Calmar / Black-Litterman, run pre-trade check, check sector concentration, manage portfolios, or analyze cross-portfolio correlation. Also covers ticker search, broker sync, batch portfolio creation, and portfolio comparison.

投资组合风险管理与分析。适用于用户要求计算风险价值（VaR）、运行蒙特卡洛模拟、压力测试、通过风险平价/卡尔马/布莱克-利特曼模型进行优化、执行交易前检查、检查行业集中度、管理投资组合或分析跨投资组合相关性。同时涵盖股票代码搜索、经纪商同步、批量创建投资组合和投资组合对比。