Inter Continental Exchange (ICE), a leading operator of regulated futures exchanges, will buy New York Stock Exchange (NYSE) Euronext, in an 8.2 billion dollar deal that will end the independence of the 220-year-old Wall Street icon.The ICE would acquire NYSE Euronext for 33.12 dollars per share in stock and cash. The Exchange, a 12-year old energy and commodity futures bourse is likely to take control of the world's biggest equities market.