Before revision:  Implementation of fractal estimator of volatility improves all performance metrics of portfolio in comparison to the standard estimator of volatility. The efficiency of fractal estimator plays a significant protective role for the periods of market abnormal volatility and drawdowns, which allows beating the market in the long term perspective.
After revision:  Implementation of fractal estimator of volatility improves all performance metrics of an investment portfolio over the ten year period. The fractal model of volatility plays a significant protective role for the periods of market abnormal volatility and drawdowns, which allows beating the market in the long term perspective.