https://grafioschtrader.github.io/gt-user-manual/en/basedata/riskfreeratemapping/index.htmlThe risk-free rate is the theoretical interest rate an investment would earn without any default risk. GT uses it as the reference for risk-adjusted metrics — today exclusively for the Sharpe ratio in Return and statistical data. Further evaluations that consume a risk-free rate are conceivable but not yet implemented. In this mapping, every supported ISO currency is linked to a dedicated security whose closing prices represent the risk-free rate for that currency. Values are stored as decimal fractions — 4.32 % therefore corresponds to a closing price of 0.0432.Hugoen