etfPerformance
Analyze ETF performance metrics including returns, volatility, Sharpe ratio, and maximum drawdown to evaluate investment performance across different time periods.
Instructions
ETF业绩数据：获取ETF基金近1年、3年、今年、成立以来的业绩指标，包括：收益率、年化收益率、年化波动、夏普比率、最大回撤、年化超额、信息比率
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| query | Yes | ETF基金代码或ETF基金名称 |