In NetCoalition v. Securities & Exchange Commission, No. 09-1042 (D.C. Cir. Aug. 6, 2010), the United States Court of Appeals for the District of Columbia Circuit held that the Securities & Exchange Commission (“SEC” or “Commission”) failed adequately to explain the basis of, and failed to provide adequate support for, its approval of a proposed fee by NYSE Arca for access by investors to its proprietary “depth-of-book” product, Arcabook. The Court vacated the approval order and remanded the matter to the SEC for further consideration of whether the proposed fee is consistent with the requirements and purposes of the Securities Exchange Act of 1934 (“Exchange Act”).