The stock of Petron Engineering Construction surged 4.8 per cent on Thursday, breaching a key resistance at ₹147 and also the 200-day moving average. Investors with a short-term horizon can buy the stock at current levels. After a medium-term downtrend from the May 2017 peak of ₹217, the stock found support at its long-term base level of ₹125 in early August. Moreover, this long-term support h...