In the latest Senate hearings into Jim Simons and his tax fraud, it was revealed that Rentech avoided leverage limits by putting many of its trades in the name of the broker. The broker would then legally own the trade, and rentech would collect a "fee" for advising the broker on what trades to do. It's more complicated that that obviously, but that's the basic idea.
http://www.hsgac.senate.gov/subcomm...s-in-taxes-and-bypass-federal-leverage-limits
This is my guess. Rentech was some sort of early HFT/options market maker. In order to avoid regulation and scrutiny and leverage limits, it would set up a deal with a broker dealer (Barclays/Deutsche Bank) to use the broker's balance sheet in exchange for a share of the profits. So Rentech would provide the strategies (the HFT algorithms or whatever) and the broker would provide the leverage/executions, and the profits would be split. Rentech was a lot more like Timber Hill than it was an ordinary hedge fund. Rentech says the brokers were liable for the losses, but because there were no losses, that was a technicality.
http://www.hsgac.senate.gov/subcomm...s-in-taxes-and-bypass-federal-leverage-limits
This is my guess. Rentech was some sort of early HFT/options market maker. In order to avoid regulation and scrutiny and leverage limits, it would set up a deal with a broker dealer (Barclays/Deutsche Bank) to use the broker's balance sheet in exchange for a share of the profits. So Rentech would provide the strategies (the HFT algorithms or whatever) and the broker would provide the leverage/executions, and the profits would be split. Rentech was a lot more like Timber Hill than it was an ordinary hedge fund. Rentech says the brokers were liable for the losses, but because there were no losses, that was a technicality.