Hero MotoCorp shares surge 6% after Q4 results. Should you buy, sell or hold?

Hero MotoCorp shares surged 6% after Q4 results, with net profit up 18% to Rs 1,016.05 crore. Brokerages remained positive: Jefferies expects double-digit industry revenue growth, maintains 'buy'; BofA sees potential in Hero 2.0 strategy, sets target price of Rs 5,400; Kotak retains 'sell' rating.