Marc Faber : I suppose that 99 percent of high frequency programs are essentially momentum players in other words when times will start to move up in an asset class or in a stock or in a sector or the stock market the computer model says BUY then they all buy and it pushes up prices and then when for one reason or another the market turns and the models say sell they'll all sell basically at the same time that's why we have a very high volatility that's why - in This Week in Money
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