Verizon Communications

CEO: Lowell McAdam

Dec. 30, 2016: $53.38

June 30, 2017: $44.66

Change: -16.34%

On March 31, Verizon announced a comprehensive restructuring of the company to focus on three areas: Media and Telematics, Network and Technology, and Customer and Product Operations. The company hired former Ericsson CEO Hans Vestberg to lead the Network and Technology operations.

Following a monthlong bidding war, Verizon said in May that it would acquire wireless spectrum holder Straight Path for $3.1 billion in an all-stock transaction. Verizon beat out rival AT&T, which had entered into a merger agreement with Straight Path in April and bid $1.6 billion for the company.

And on June 13 Verizon closed its $4.48 billion acquisition of Yahoo and its popular media assets, including its sports and finance content. Verizon plans to combine those assets with the AOL assets it acquired in 2015 into a subsidiary called Oath. The acquisition price was $350 million less than the two companies originally negotiated – the lower price reflected Yahoo's reduced value after the disclosure of two major security breaches in 2013 and 2014 that exposed 1.5 billion user accounts.