Shares of J. Sainsbury PLC (JSAIY) have been struggling lately and have lost 7.2% over the past week. However, a hammer chart pattern was formed in its last trading session, which could mean that the stock found support with bulls being able to counteract the bears. So, it could witness a trend reversal down the road.While the formation of a hammer pattern is a technical indication of nearing a bottom with potential exhaustion of selling pressure, rising optimism among Wall Street analysts about the future ...