title: John Duffield
text: # John Duffield
  
  John Lincoln Duffield (born 1939) is a British financier. He founded Jupiter Fund Management, one of the largest fund managers operating in London.
  
  ## Career
  
  The second son of physician and psychiatrist John Elwes Duffield (1910-2009) and his first wife, Jean Edwina (née Stellman), Duffield was educated at Harrow School and then took a degree in biochemistry at the University of Oxford. After this, he went into investment management and, having become manager of his wife's estates, moved to Switzerland as a tax exile.
  
  He founded Jupiter Asset Management in 1985. After selling Jupiter Asset Management to Commerzbank, he founded New Star Asset Management in 2001.
  
  ## Family
  
  He was married to Vivien Clore but was divorced from her in 1976; they had one son and one daughter. Duffield owns the Marcham Farms estate at Peasemore, Berkshire.
  
  