William Carlson, founder of Belvedere Trading LLC, announced that he launched the firm through Chicago Board Options Exchange (CBOE) channels and plans to provide new details to the exchange's board about the company’s history and conduct. This statement was made in an email.

"I founded this company alone in January, 2002," said Carlson. "I founded this company as member of the CBOE, recruited CBOE people, with offices @ 440 S LaSalle CBOE building. I alone was responsible for Belvedere Trading LLC becoming a CBOE member firm."

In May, Carlson filed a formal complaint with the Illinois Attorney Registration and Disciplinary Commission against Mark Francis Duffy, a former director at CBOE. According to Carlson, Duffy was retained in 2011 to investigate Belvedere Trading but failed to act

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