Brokerages from Citi to Nuvama and Motilal Oswal have companies like Life Insurance Corp., Natco Pharma Ltd., Oil India Ltd., and Sumitomo Chemical India Ltd. on their radar following the release of these companies' fourth-quarter results.NDTV Profit tracks what the brokerages are putting out on specific stocks. Here are all the top calls from the brokerages that you need to know about on Wednesday.