Thomas Petterfy started his firm around 40.<p><a href="http:&#x2F;&#x2F;www.vanityfair.com&#x2F;news&#x2F;photos&#x2F;2015&#x2F;12&#x2F;billionaires-who-got-richer-2015" rel="nofollow">http:&#x2F;&#x2F;www.vanityfair.com&#x2F;news&#x2F;photos&#x2F;2015&#x2F;12&#x2F;billionaires-w...</a>