Hong Kong-listed shares of PC maker Lenovo Group jumped 26.59% on rumors it would buy a leading Brazilian computer firm, the South China Morning Post reported. The company’s shares closed at HK$2.19 (US$0.28). Reports indicated that Lenovo was competing with US computer manufacturer Dell to buy Sao Paulo-listed Positivo Informatica, which has a market capitalization of about US$215 million. Both Lenovo and Dell declined to comment on the rumors. Earlier this week, Lenovo Chairman Yang Yuanqing said the firm intended to accelerate growth and pursue investments in emerging markets.