Insider Trading y expansión de su concepto

"But even if “sauce for the goose is sauce for the gander,” there remains a certain unease about the use of confidential information to such great advantage. One rationale for the insider trading prohibition and the 5 percent ownership disclosure rule is to promote transparency in the market, so that investors can make decisions based on roughly equal information.

If transparency is a reason for punishing trades based on confidential information, then the definition of insider trading could be expanded to cover situations like Pershing Square’s purchases of Allergan shares. One way to do that is by adopting the “possession theory” of insider trading that makes any use of confidential information improper before disclosing to the market."


http://dealbook.nytimes.com/2014/04/28/could-it-be-time-to-broaden-the-definition-of-illegal-insider-trading/?_php=true&_type=blogs&smid=tw-share&_r=0