The U.K.’s Financial Services Authority (FSA) has ended its investigation against hedge fund manager, Guillaume Rambourg, Financial Times reports. It was alleged that the trader had been involved in insider trading, which led to a crisis at his former employer, Gartmore.

FSA will not take any disciplinary action against Rambourg. In July, he resigned from Gartmore to “co-operate fully” with the regulator’s investigation. Rambourg along with Roger Guy co-managed the $1.6 billion Alphagen Capella fund, and were responsible for 40% of the Gartmore’s revenues, adds The Wall Street Journal.

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