joined the AdMarket 50 index July 2. It replaces True North Communications, which ceased trading last month after completing its sale to Interpublic Group of Cos. In mid-June, Digitas warned its revenue for the second quarter ending June 30 will be $60 million to $63 million, lower than the $70 million it posted in the same period last year. Management warned the company will post a loss in the quarter due to a $13 million to $16 million charge for restructuring, including 180 layoffs, or 10% of its staff. Rising unemployment data and corporate earnings warnings drove the stock market lower after the July 4 holiday. Only three of the AdMarket's stocks were up for the week.