Bank of America Merrill Lynch (BofA) has downgraded GM Infrastructure stock to under perform from neutral and has cut target price to 29 rupees from 42 rupees on the back of continual losses estimated for FY12,deferment of real estate monetisation at Delhi airport and higher execution risks. Stock offers a limited upside potential of 10 percent - amongst the lowest in our coverage universe and hence we are cutting our rating,the Wall street bank said in a note. At 1.41 p. m.,the stock was at 27.15 rupees,up 2.84 percent in a Mumbling market that was up over 3 percent. Company INFO More on GMR Infra Stocks More on GMR Infra