UBS Warburg has appointed John Holland,áMichael Chin and John Jacobson as senior bankers, based in Hong Kong. Holland, with the company for 15 years, was previously global head of Asian Distribution, London. Chin was the head of equity sales based in Seoul. He joined the company in 1997 from CSFB. Jacobson, whoá was formerly regional head of Asian Sales, is now head of Malaysia, Indonesia, Philippines and India. His responsibilies include increasing market share and enhancing the company's rankings in client reviews and surveys.