SLIM’S SHRINKING SAKS STAKE: Carlos Slim Helú is inching closer to ceding his position as Saks Inc.’s top shareholder. The Mexican billionaire sold a total of 550,000 shares at prices that range from $11.66 to $11.87 in a series of trades Aug. 29 and 30, according to filings with the Securities and Exchange Commission. That left him with 23.4 million shares — a hair above the 22.7 million shares controlled by Diego Della Valle, Tod’s SpA chairman and chief executive officer. Since Aug. 20, Slim has sold off 3.2 million Saks shares.