Louis Au Yeung, group treasurer at Hong Kong's Orient Overseas (International) Limited (OOIL), has had a rocky ride during the past two years. The global shipping company with $4.4 billion in revenue last year saw trade volumes plummet and then watched Asia rebound. With Yeung's team of 13, five dedicated to finance and eight to cash management, he's helped the company navigate stormy seas and catch the market upturn.