Union Investment appoints Andreas Köster head of portfolio management Events If you already have an account please use the link below to sign in. If you have any problems with your access or would like to request an individual access account please contact our customer service team. Joins from UBS Global Wealth Management Andreas Köster of Union Investment Andreas Köster will become the new head of portfolio management of Union Investment, succeeding Frank Engels, who is leaving Union Investment on 30 September. From 1 September, Köster will lead the fund management team with 300 professionals and will be responsible for an investment strategy of roughly €306bn in assets under management.