A cause of action (a lawsuit) has always been like a property interest. As such, through an assignment, you can buy and sell it, mortgage it, put a lien on it, and do about everything else you could do with a property interest. I have never heard of anyone selling shares in a cause of action, though I don't see why this would not conform to existing law, assuming you comply with SEC regulation on the sale of securities.<p>It's an interesting idea. However, the financial crisis of '08 happened in part because wall street innovation allowed for the selling of shares of mortgage portfolios, so I would be cautious where this goes.<p>The arguments for and against it in the article seem to mirror the arguments regarding a lawyer's contingent fee interest. Some would say contingency fees have done harm to the legal system. In fact, some states limit contingency fee awards in medical malpractice to limit those types of lawsuits. So, if your goal is to limit lawsuits, this kind of arrangement probably would be bad.