Sebi chairman M Damodaran today welcomed the bull run after the Sensex crossed 7,500 points, but cautioned investors to take informed decisions for getting reasonable returns from their investments.Damodaran, who was in the city for attending a workshop of the Standing Committee on Public Enterprises, dismissed the notion that shares were over-priced."There is no evidence to support that stock markets have outperformed the economy," he said indicating that the fundamentals of the companies were sound and that was reflected in the prices of shares.Finance minister P Chidambaram had said last week that he would not be concerned as long as the Sensex does not outperform the economy.Damodaran cautioned investors to take informed decisions for getting reasonable returns from their investments even if the market was witnessing a bull run."The Sebi message to investors is - informed investment decisions will give reasonable returns," he said.