SLIM KEEPS SELLING SAKS: Carlos Slim Helú continued to lighten up his Saks Inc. stake Friday, selling 225,000 shares at prices ranging between $11.73 and $11.82, according to filings with the Securities and Exchange Commission. The Mexican billionaire is still the firm’s biggest shareholder with 23.1 million shares. Diego Della Valle, Tod’s SpA chairman and chief executive officer, holds 22.7 million Saks shares.