Allegations from Mr. Markopolos (CFA Chartedolder as per his webpage) might be true or not - I am not in a position to judge - but how does this real life example agrees with the CFA Code of Ethics and Standards (i.e. Independence & Objetivity, Market Manipulation, Conflicts of Interest). See below the quote from WSJ:

“Mr. Markopolos said he and his colleagues are working with an undisclosed hedge fund, which is betting GE’s share price will decline. Mr. Markopolos’s group gave the investor access to the research before publication and will receive a portion of any trading proceeds. He declined to identify the hedge fund. The group also is sharing its findings with securities regulators, hoping to collect a cash reward as part of a whistleblower program, Mr. Markopolos said.”

Happy to discuss!