Given the aftereffects of Thursday’s blackout in New York, it was only natural that trading volume was at a major—if not all-time—low, as traders either left work early or did not show up at all. For that reason, the Dow Jones Industrial Average by the end of last week did not move much from where it had been when the lights went out. As a result, ad holding-company stocks remained up. On the Big Board, Omnicom’s shares rose 2.6 percent to close the week at $75, while IPG saw its stock price increase 2.1 percent to $13.68. British holding company WPP, trading as American Depository Receipts on the Nasdaq, climbed 7.3 percent to finish at $45.69.
