Quarter: 4Q 2007
Loss: $32.7 billion
Adjusted for inflation: $36.2 billion
Sprint posted this huge loss in the wake of its merger with Nextel Communications. With differing work cultures and technological infrastructures, integrating the two companies became a major headache for Sprint and it was forced to write down more than 80 percent of the $36 billion it had paid for Nextel in 2005.
The company has had choppy earnings since, most recently punctuated by a loss of $863 million during the first quarter of this year. On July 15, it plans on launching its 4G LTE network to compete with Verizon and AT&T in the high-speed mobile network market.