{"code":200,"msg":"success","data":{"code":"600519","name":"600519","trade_date":"20260731","calc_version":"1.0","beta_252d":null,"beta_rank":264,"volatility_20d":29.723149,"volatility_60d":25.120284,"sharpe_252d":null,"sharpe_rank":2154,"max_drawdown_252d":null,"max_drawdown_rank":161,"var_95":null,"update_time":null}}