The study investigates the effect of sales, profit, total assets on market capitalization of company and hence wealth of equity investors. Company creates for its shareholders in stock market. A sample of 40 Indian companies across 5 sectors in investigated to understand effect of sales, net profit and total assets in market capitalization of companies across sectors. The sectors included are fast moving consumer goods, consumer durables, oil and gas, steel and information technology industry. The net profit was found to have significant influence on market capitalization of companies in fast moving consumer goods, consumer durables, and steel and information technology. The oil and gas industry market capitalization was influenced more by total assets of the companies and secondly by net profit. The sales of the companies had an influence on market capitalization only in case of information technology sector companies. Individual importance of factors across Industries was different. The data taken is for year October , 2010. The data is taken f rom moneycontrol.com. Keywords - Sales, Net Profit, Total Assets, Market Capitalization.