The government agency is beginning an investigation into any potential insider trading around the downgrade.
The SEC's exam group, headed by Carlo di Florio, is conducting the probe. The exam staff can refer people to the SEC's enforcement division if it believes they broke the law. Despite the investigation, the agency is not aware of any leaks from S&P staff or any suspect trades.
Moreover, the Financial Times wrote, proving that any information was leaked or used to gain an advantage in trading could be challenging because many traders were expecting the downgrade and used that to their advantage without inside information.