Edward J. DeBartolo Corp. of Youngstown, Ohio,...

Edward J. DeBartolo Corp. of Youngstown, Ohio, extended until Aug. 6 an agreement to give Campeau Corp. nine days advance notice before seizing any of the Toronto-based company’s collateral for a $480-million loan that is in default . . . North Hollywood-based Ventura Entertainment Group approved a 2-for-1 stock split of its common stock for shareholders of record Aug. 1. . . . Baker Hughes Inc. of Houston reported that the number of working oil and natural gas rigs in the United States increased by 21 this week to total 1,022. A year ago, the count was 830 . . . The Federal Reserve said the average yield for one-year T-bills, the most popular index for making changes in adjustable-rate mortgages, fell to 7.87% last week, down from 8.09% the week before.