> Secondary sales totaled $47 billion in 2014, up 80 percent from the previous year, according to investment bank Evercore. Still a relatively small volume of

> Secondary sales totaled $47 billion in 2014, up 80 percent from the previous year, according to investment bank Evercore. Still a relatively small volume of sales we are talking about here. Does anyone have any information on the structure of the secondary market - big players, regulation, etc. The article was light on details.