Aurobindo Pharma, Ramky Infra dip on buzz of CBI raidSI Reporter / Mumbai August 22, 2011, 11:37 ISTRamky Infrastructure plunged 16% at Rs 226, also its all-time low on the BSE. Aurobindo Pharma and Navabharat Ventures are dipped 9% each at Rs 125 and Rs 176, respectively in morning trades.