Rob Lawes, chief executive of Bob the Builder group Hit Entertainment, ploughed into the market by exercising his right to buy 390,000 shares under company share option schemes for 68.66p a time. As the shares added 5p to reach 215p, Lawes was looking at a paper profit of 150p a share, or £586,000. Not bad for a company whose shares yesterday lost 83p on news that Wal-Mart was to scale back drastically the number of the firm's products that it stocks.