Stephen MacMillan, CEO of Hologic, says that his company's 3D technology addresses the key issues in mammograms. Then, Laura Keller, a Bloomberg finance reporter, and Elliot Stein, a senior litigation analyst for Bloomberg Intelligence, discuss Wells Fargo's sales abuse culture and the SEC investigation. Kit Chellel, a legal reporter for Bloomberg in London, discusses today's U.K. court decision, which rules that the U.K. must now hold a vote in Parliament before starting the Brexit process. John Campbell, chief investment officer of Cornerstone Investment Partners, covers earnings and outlook for small-cap stocks.