Returns Daily Total Return For Multiple Periods

This calculates the Daily Total Returns for IBMs primary issue (GVKEY = 006066, IID = 01) for three time periods:Note: The 1-year return (TRT1Y) is calculated over the period from March 6, 2012 thru March 6, 2013. The 3-year return (TRT3Y) is calculated over the period from March 4, 2010 thru March 6, 2013. The 5-year return (TRT5Y) is calculated over the period from March 4, 2008 thru March 6, 2013