Game publisher Activision's stock could be delisted from the Nasdaq exchange after the company failed to file its quarterly earnings statement. Activision alerted shareholders to the news and pledged to make the earnings report available as soon as "practicable." The reason for the delay, it says, is due to the need to complete a review of the company's stock-option grant practices. Activision is one of more than 180 companies being investigated by the Securities and Exchange Commission regarding the backdating of stock options. The company intends to request a hearing before the Nasdaq Listing Qualifications Panel to appeal for continued listing.