27 October 2015 - Although it existed as a relatively small company before 2010, it did a deal that year that put it on the map.
For more details, go to: http://www.nytimes.com/2015/10/27/opinion/is-valeant-pharmaceuticals-the-next-enron.html?emc=edit_th_20151027&nl=todaysheadlines&nlid=20088616&_r=0