Penny stock under Rs 20 hits upper circuit as Anti-Dumping duty propels 'Make in India' optical fibre company! The stock is locked at an upper circuit limit of 20 per cent at Rs 12

This penny stock has become the talk of the town among dividend investors on D-Street, and for good reason. Despite its small market cap of just 3.35 crore, the stock has been making waves, having recently hit its upper circuit limit of 5 per cent at a level of Rs 11.