Hi all,

We've added a new US Money Market Index (^CASHX) to address the lack of comprehensive historical data for money market funds. It's a synthetic index tracking daily cash equivalent returns based on the Federal Funds Rate, with historical data extending back to fifties. This index provides an accurate proxy for money market funds like SWVXX, VUSXX, and other cash holdings in portfolio analysis.

This also resulted in Sharpe ratio calculator improvement. You can now select the US Money Market Yield as your risk-free rate, which dynamically adjusts based on actual historical interest rates over your analysis period. This provides more accurate risk-adjusted return calculations compared to using a fixed percentage. And it is now the default option when calculating Sharpe, though you can still use custom rates for specific analysis needs.

We are also planning to extend this setting to other risk-adjusted metrics like Sortino and make it default for pre-calculated values in screeners to solve the overperformance of short-term bond funds and ETFs.