SoftBank has been in the limelight since last summer, when it bought Sprint, the third-largest U.S. mobile carrier. Now all the talk is about SoftBank also gobbling up No. 4 carrier, T-Mobile US.
In terms of market capitalization, there is only one company in Japan bigger than SoftBank. And Toyota Motor has been around since 1937. Chairman and CEO Masayoshi Son has aggressively expanded SoftBank since its 1981 founding.