Rainbow Quiz - Identify the personality - Week 47

Here is the next weekly "Rainbow" quiz , where I would be giving 7 clues (Hence the name Rainbow) about a personality. Try to discover the person in the least number of clues . You can either leave the answer as a comment / email me . Feedback/ suggestions welcome. Googling is not preferred but then its just for fun and so go ahead if you need to.

One of the most famous investor, philanthropist and political activist of our times.

clue # 1 : "X" was born in Budapest, Hungary, in 1930 in a Jewish family. As a thirteen year old, he survived the prosecution of Jews by Hitler during the second world war.

clue # 2 : He emigrated to England after the world war and supported himself by working as a railroad porter and a restaurant waiter, graduating in 1952 from the London School of Economics.

clue # 3 : At the London School of Economics, "X" became acquainted with the work of the philosopher Karl Popper, whose ideas on open society had a profound influence on his intellectual development.

clue # 4 : In 1950's, he immigrated to the United States where he worked as a trader and analyst . He then helped to establish an offshore investment fund; and in 1973 he set up a private investment firm that eventually evolved into the Quantum Fund, one of the first hedge funds, through which he accumulated a vast fortune.

clue # 5 : He particularly became famous as a financial speculator. On Black Wednesday (September 16, 1992), "X" became immediately famous when he sold short more than $10 billion worth of pounds, profiting from the Bank of England's reluctance to either raise its interest rates or to float its currency.He was dubbed as "the man who broke the Bank of England".

clue # 6 : X's philanthropic funding in Central and Eastern Europe mostly occurs through the Open Society Institute (OSI) . He has peacefully promoted democracy in many countries in Eastern Europe and Africa.

clue # 7 : During the 2004 US presidential elections, "X" said that removing President George W. Bush from office was the "central focus of my life" and "a matter of life and death." He now backs Barack Obama ( Democrat) for the 2008 elections.

Who is X?