This online portfolio backtesting tool allows you to construct one or more portfolios based on the selected mutual funds, ETFs and stocks to analyze and backtest portfolio returns, risk characteristics, standard deviation, annual returns and rolling returns. The results include a visualization of the portfolio growth chart and rolling returns, CAGR, standard deviation, Sharpe ratio, Sortino ratio, annual returns and inflation adjusted returns. A periodic contribution or withdrawal can also be specified together with the preferred portfolio rebalancing strategy. You can also analyze and compare asset class based lazy portfolios with a longer time horizon starting from 1972.