On Friday, Chicago Board Options Exchange (CBOE), the largest options exchange in the United States, announced its second-quarter earnings results. Of particular interest was its total operating expenses, which soared 685% year-over-year from $160.6 million. CBOE explained: “This was primarily due to the $460 million impairment of goodwill recognized in the Digital reporting unit, driven by negative events and trends in the broader digital asset environment. The said environment has changed dramatically since we closed the ErisX transaction on May 2, which resulted in the accounting adjustment.” ErisX enables self-directed individual retirement accounts, or IRAs, for U.S. residents to invest in crypto assets. This was CBOE’s first venture into the digital assets sector; t...