Valuations of major cement companies, such as UltraTech Cement, ACC, Ambuja Cements, Shree Cement and Dalmia Bharat, have become attractive this year after stocks of these top building-materials producers fell 18-28% so far this year. By contrast, the Sensex has fallen 8%. Hence, these large-sized companies are trading at 20-54% discounts to their 10-year average price to earnings multiples.