Shares of Las Vegas Sands' Macau unit tumbled on their debut in Hong Kong Monday, but Chairman Sheldon Adelson dismissed the drop as a short-term slump. Adelson, 76, said Sands China remains committed to developing Macau's Cotai Strip resort into a full-service gaming venue, despite concerns that the world economy has not recovered from last year's credit crisis. 'There is no reason to think a little bump in the road is going to last,' Adelson told reporters in Hong Kong. 'It's not going to last, it's going to straighten out. We're in it for decades.' Sands shares fell 13.2 percent to 9.01 Hong Kong dollars (1.16 dollars US) on the Hang Seng Index at midday after touching a low of 8.78. The shares opened Monday at 10.38. 'The drop is mainly due to the valuation of the company -- it's too high,' Ernie Hon, a strategist at ICBC International in Hong Kong, told selfnews. Sands' share price will likely be 'under pressure for some time' because of its heavy debt, Hon added. The Sands' underwhelming first day follows several disappointing listings in Hong Kong recently, including those of China's private lender Minsheng Banking and gaming group Wynn Macau. Mainland Chinese, Hong Kong and overseas companies have rushed to list before year's end amid signs of an economic recovery. Rival Wynn Macaus shares were trading at 9.73 Hong Kong dollars on Monday morning, below their IPO price of 10.08 Hong Kong dollars. Sands announced its listing plan after Wynn launched an IPO on October 9, as overseas casino operators seek to capitalise on a rebound in sentiment towards Macau's gaming sector. Sands raised 2.5 billion dollars in its initial public offering earlier this month -- less than the 3.4 billion dollars executives had expected. The share sale was Hong Kong's second-biggest IPO this year. Some of the sale proceeds and a 1.75 billion dollar bank loan will be used to restart the company's stalled Macau resort, after it was put on hold in November when the global crisis pounded the Asian gaming enclave. More than half the IPO proceeds are earmarked for paying down debt. About 11,000 construction jobs were lost when the project halted, dealing a blow to the former Portuguese colony. Macau, which was handed back to China in 1999, is the only Chinese city where casino gambling is allowed. It has now overtaken Las Vegas in terms of gaming revenue after opening the gaming sector to foreign competition in 2002. Las Vegas Sands currently operates the Venetian, Sands and Four Seasons casino hotels in Macau. 