REALTY Development Corporation is a property developer of residential sites in Hong Kong. This time last year, PrimeEast Capital Group put a buy on the stock saying it had no exposure to the weak industrial and commercial sectors. This proved to be sound advice. The company's class A shares soared last July when the group said net profit rose 10.7 per cent. Twelve months ago, the class A shares traded at $18.90, and they are now worth $25.60, having outperformed the benchmark Hang Seng Index by 18.81 per cent.