► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />The S&P 500 has climbed from the abyss of 2009, when it had lost more than half its value, to within 5 per cent of its all-time high. This comes as no surprise to David Ranson, president of Wainwright Economics, who maintains such recoveries follow a empirically predictable trajectory. He explains his theory and where it shows buying opportunities to Long View columnist John Authers. <br /><br />For more video content from the Financial Times visit: http://www.ft.com/video<br /><br />http://www.FT.com/
