Need a time period analysis of dax 30 (german index) stocks. i would need different stock comparisions and different portfolios of the riskiest stocks and the least risky stocks based on the amount of their fluctuations and other risk methodologies. once the least riskiest portfolios are determined in different time periods should compare them against each other. hence trying to understand if historical risk return policies have any influence in understanding present and determining the future. I will submit an excel document tomorrow with all the stock prices that u should be using.