> ## Documentation Index > Fetch the complete documentation index at: https://docs.fincept.in/llms.txt > Use this file to discover all available pages before exploring further. # Portfolio Risk-Adjusted Performance Ratios > Calculates key risk-adjusted performance ratios including Sharpe ratio, Sortino ratio, maximum drawdown, information ratio, and tracking error. **Use Cases:** - Performance evaluation and benchmarking - Manager selection and comparison - Risk-adjusted return assessment - Client reporting and communication **Ratios Calculated:** - **Sharpe Ratio**: Excess return per unit of total risk - **Sortino Ratio**: Excess return per unit of downside risk - **Max Drawdown**: Largest peak-to-trough decline - **Information Ratio**: Active return per unit of tracking error (requires benchmark) - **Tracking Error**: Volatility of active returns (requires benchmark) **Credits:** 5 per request [Tier: PRO, Credits: 5] ## OpenAPI ````yaml api-specs/portfolio.json post /quantlib/portfolio/risk/ratios openapi: 3.1.0 info: title: FinceptQuantLib API - Portfolio description: >- Portfolio optimization and risk management module for institutional-grade portfolio construction, analysis, and monitoring. Includes mean-variance optimization, Black-Litterman, risk parity, and comprehensive risk metrics. **Tier:** Pro (5 credits per request) **Key Features:** - Mean-variance optimization (minimum variance, maximum Sharpe, target return) - Efficient frontier construction with tangency portfolio identification - Black-Litterman model for Bayesian view incorporation - Risk parity strategies (ERC, HRP, inverse volatility) - Comprehensive risk metrics (VaR, CVaR, tracking error, information ratio) - Advanced portfolio analytics (risk contribution, drawdown, diversification) version: 3.0.0 contact: name: Fincept API Support url: https://fincept.in servers: - url: https://api.fincept.in description: Fincept API Production Server security: - APIKeyHeader: [] tags: - name: quantlib-portfolio description: Portfolio optimization and risk management endpoints x-displayName: Portfolio paths: /quantlib/portfolio/risk/ratios: post: tags: - quantlib-portfolio summary: Portfolio Risk-Adjusted Performance Ratios description: >- Calculates key risk-adjusted performance ratios including Sharpe ratio, Sortino ratio, maximum drawdown, information ratio, and tracking error. **Use Cases:** - Performance evaluation and benchmarking - Manager selection and comparison - Risk-adjusted return assessment - Client reporting and communication **Ratios Calculated:** - **Sharpe Ratio**: Excess return per unit of total risk - **Sortino Ratio**: Excess return per unit of downside risk - **Max Drawdown**: Largest peak-to-trough decline - **Information Ratio**: Active return per unit of tracking error (requires benchmark) - **Tracking Error**: Volatility of active returns (requires benchmark) **Credits:** 5 per request [Tier: PRO, Credits: 5] operationId: risk_ratios requestBody: required: true content: application/json: schema: type: object required: - returns properties: returns: type: array items: type: number description: >- Portfolio return time series (periodic returns, not cumulative) example: - 0.015 - -0.008 - 0.023 - 0.012 - -0.005 - 0.018 - 0.009 - -0.012 - 0.021 - 0.007 rf_rate: type: number description: Risk-free rate (per period, matching returns frequency) default: 0 example: 0.0012 benchmark_returns: type: array items: type: number description: >- Benchmark return time series. Required for information ratio and tracking error. nullable: true example: - 0.012 - -0.006 - 0.019 - 0.01 - -0.004 - 0.015 - 0.008 - -0.01 - 0.018 - 0.006 target_return: type: number description: Target return for Sortino ratio calculation (per period) default: 0 example: 0 responses: '200': description: Risk ratios successfully calculated content: application/json: schema: type: object properties: success: type: boolean example: true data: type: object properties: sharpe_ratio: type: number description: Sharpe ratio (excess return / volatility) example: 0.8234 sortino_ratio: type: number description: Sortino ratio (excess return / downside deviation) example: 1.1456 max_drawdown: type: number description: Maximum drawdown (largest peak-to-trough decline) example: 0.1523 information_ratio: type: number description: >- Information ratio (active return / tracking error). Only present if benchmark provided. example: 0.4567 tracking_error: type: number description: >- Tracking error (volatility of active returns). Only present if benchmark provided. example: 0.0456 '401': $ref: '#/components/responses/UnauthorizedError' '402': $ref: '#/components/responses/InsufficientCreditsError' '422': $ref: '#/components/responses/ValidationError' components: responses: UnauthorizedError: description: Authentication information is missing or invalid content: application/json: schema: type: object properties: detail: type: string example: Invalid API key InsufficientCreditsError: description: Insufficient API credits content: application/json: schema: type: object properties: detail: type: string example: Insufficient credits. This endpoint requires 5 credits. ValidationError: description: Request validation error content: application/json: schema: type: object properties: detail: type: array items: type: object properties: loc: type: array items: type: string msg: type: string type: type: string example: detail: - loc: - body - expected_returns msg: field required type: value_error.missing securitySchemes: APIKeyHeader: type: apiKey in: header name: X-API-Key description: >- API key for authentication. Get your key at https://api.fincept.in/auth/register ````