Petrolimex Nghe Tinh Joint Stock Company (HNX: PTX) has been dubbed the 'dark horse' of the oil and gas industry, with its stock price soaring from a few hundred dong to a peak of 23,000 dong per share ahead of its exchange transfer. The company continues to surprise with its announcement of a record-high cash dividend of 24%, equivalent to nearly 80% of its 2024 post-tax profits.