Founder, chairwoman, and CIO of Green Cay Asset Management; director of the late Sir John Templeton's First Trust Bank; and co-founder of iGivingWorld, a social network for philanthropists. Siebels formed Green Cay Asset Management in 1997, an investment firm which oversees $300 million in assets for institutions and high net worth individuals. From 1990-1996, she was senior vice president and portfolio manager at Templeton, Galbraith, & Hansberger, one of the world's leading investment advisory firms.