---
name: sharpe_ratio
kind: function
lang: go
domain: finance
version: "1.0.0"
purity: pure
signature: "func SharpeRatio(returns []float64, riskFreeRate float64, periodsPerYear float64) float64"
description: "Calcula el ratio de Sharpe anualizado a partir de retornos, tasa libre de riesgo y frecuencia."
tags: [finance, sharpe, risk, ratio]
uses_functions: []
uses_types: []
returns: []
returns_optional: false
error_type: ""
imports: [math]
tested: false
tests: []
test_file_path: ""
file_path: "functions/finance/sharpe_ratio.go"
---

# sharpe_ratio

Calcula el ratio de Sharpe: `(mean(returns) - riskFreeRate) / stddev(returns) * sqrt(periodsPerYear)`. Usa desviacion estandar muestral.

## Ejemplo

```go
sr := finance.SharpeRatio([]float64{0.01, 0.02, -0.005, 0.015, 0.008}, 0.0001, 252)
```