Swire Properties, which owns an investment property portfolio of 21.3 million square feet in Hong Kong and on the mainland, posted a 12.7 per cent jump in full-year underlying profit to HK$7.15 billion on higher rental income and property sales. The conglomerate said its underlying profit for last year grow 15 per cent to HK$9.73 billion on higher profits from its property, aviation, beverage and trading and industrial divisions.