Insurance giant American International Group is looking for $20 billion in wealth management assets within five years at its new Taiwan unit, which opens for business around September, according to Mark Wei, head of AIG Private Bank in Taiwan. "Taiwan is the most important market in Asia for AIG Private Bank,” Mr Wei told Reuters. "We hope to become a tier-one player in Taiwan." The Taiwan wealth management and private banking business will be the fourth for AIG Private Bank in Asia. AIG plans to build its wealth management business on the 9,000-10,000 high net worth clients that its insurance arm now serves in the country, each of whom is assumed to have investable assets of at least $2 million.