2. HDFC Bank ( HDB) is one of the biggest private sector banks focusing on retail, wholesale and treasury operations. HDFC Bank's net profit increased 33% year-over-year in the December quarter, largely driven by income growth and lower provisioning. Loan advances grew 33% year-over-year. Despite a 10 basis point year-over-year decline, margins remained healthy at 4.2%, supported by low-cost deposit franchises. However, margins could face some pressure, as the bank has to expand its deposit base. Provisioning expenses were under control and coverage ratio improved to 81%. Asset quality remained healthy and continued to improve, gross and net non-performing loan ratios improved sequentially. Restructured assets stood at 0.3% of loan book. The stock delivered 25% gains during the last one year. Analysts' consensus estimates project a 30% upside from current level. The stock is trading 3.8 times its estimated 2012 book.