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Two Sigma Investments
Two Sigma Investments is a New York City-based hedge fund that uses a variety of technological methods, including artificial intelligence, machine learning, and distributed computing, for its trading strategies.〔(【引用サイトリンク】Two Sigma Investments )〕 The firm is run by John Overdeck and David Siegel, and manages $29 billion.
==History==
Two Sigma Investments was founded in 2001 by John Overdeck, David Siegel and Mark Pickard.〔〔 The company's main office is in New York City. It also has branch offices in Houston, London, and Hong Kong.〔(【引用サイトリンク】Contact )〕 According to Two Sigma, the firm's name "Two Sigma" was chosen to reflect the duality of the word sigma. A lower case sigma designates the volatility of an investment's return over a given benchmark, and sigma with a capital S denotes sum. By adding together the volatilities of individual positions measured against the benchmark, Two Sigma can amplify forecast signals, the company's website says.〔(【引用サイトリンク】url=http://www.twosigma.com/about.html )〕
The fund size has grown steadily, reaching about $8 billion in November 2011, $20 billion in July 2014,〔 and $23 billion in October 2014.
In October 2013, Two Sigma Private Investments announced that it was joining with Stephen Hannahs to form Wings Capital Partners, a commercial aviation private equity, investment, advisory and financing company. In July 2014, it was announced that Simon Yates, Citigroup's global head of equity derivative sales and trading, left the bank to join Two Sigma.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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