Yes, it would still have limits. There are several trading / arbitrage companies that are bringing roughly the same money over the years - for the past 20 years

Yes, it would still have limits. There are several trading / arbitrage companies that are bringing roughly the same money over the years - for the past 20 years (I used to work for one). That being said, RenTech is indeed very interesting. For all we know, it could be a money laundering operation or something similar to Madoff's structure. Or they are just very very good, or lucky. Time will tell !