stocks (version 1.1.4)

sharpe: Sharpe Ratio

Description

Calculates Sharpe ratio from vector of gains or prices. The formula is: (mean(gains) - rf) / sd(gains), where rf is some risk-free rate of return.

Usage

sharpe(gains = NULL, prices = NULL, rf = 0)

Arguments

gains

Numeric matrix with 1 column of gains for each investment (can be a vector if there is only one).

prices

Numeric matrix with 1 column of prices for each investment (can be a vector if there is only one).

rf

Numeric value.

Value

Numeric value.

Examples

# NOT RUN {
# Simulate daily gains over a 5-year period
set.seed(123)
stock.gains <- rnorm(252 * 5, 0.0005, 0.01)

# Calculate Sharpe ratio using risk-free return of 0
sharpe(stock.gains)


# }