No end in sight for blackberry's troubles. Once one of the hottest stocks (and products) on the market, Blackberry's fall from grace has been stunning. The company's market cap has dropped from over $70 billion to a mere $3 billion - and from the looks of things, the carnage is not over. Revenue continues to fall like a stone and the company loses almost a billion dollars every year. To make matters worse, forward guidance predicts even more bad news. Conclusion.Avoid or short this stock.