[badfrog]

From a skim, that article doesn't seem to suggest that DE Shaw has done anything illegal. In fact, the paragraph after the one you quoted from makes it look like they work hard to stay within the bounds of the law:

> This secrecy and vigilance extended to the company’s extreme caution on legal and compliance issues. One of Shaw’s common sayings, repeated at an annual training session by a compliance officer, was that it was important to avoid risks and legal trouble because Shaw wanted to make sure that his kids could go to college.

[setgree]

You are right, the article didn't suggest anything illegal. It suggested instead a strong culture of NDAs. But again, I think something as illegal as the OP post in this thread suggested would have gotten some folks to whistleblow nonetheless.