Major benchmark indices seem ambivalent about the impact of the new Coronavirus variant Omicron on the economic growth, evident from the sell-offs and buying bouts alternating over the past few days. Meanwhile, individual stocks seem to be humming a bearish tone. Close to 44 percent constituents of the key benchmark index NSE 500 are already trading 20 percent lower than their respective 52-week high, a study by Moneycontrol showed.