http://online.wsj.com/article/SB10001424052970204644504576651543867666916.html "Wall Street regulators expressed mounting concern about SAC Capital Advisors' trading over a nine-year period, detailing in dozens of confidential reports suspicions that the hedge-fund firm might have profited from insider information. The reports, submitted by the regulators to the Securities and Exchange Commission, don't allege wrongdoing by SAC, one of the world's best-known hedge-funds, which is overseen by billionaire founder Steven A. Cohen. But investigators at the Financial Industry Regulatory Authority, a self-regulatory body for securities firms, described SAC's history of well-timed trades as unusually prescient and particularly profitable, according to more than 320 pages of documents reviewed by ..."