Altaba is an investment company based in New York City, that resulted from Verizon's acquisition of Yahoo! Inc's internet business. The company that remained after the purchase changed its name to Altaba Inc. on June 16, 2017. Verizon completed its acquisition on June 13, 2017 and put the assets under a new subsidiary, Oath. The only 'Yahoo!' branded interest in the hands of Altaba is its stake in the joint venture Yahoo! Japan.

On June 16, 2017, the company that remained after Verizon Communications purchased the internet businesses of Yahoo! Inc. was renamed Altaba Inc. On the United States Securities and Exchange Commission's website, they listed the new company as a "non-diversified, closed-end management investment company."

The ticker symbol: YHOO changed to: AABA on June 19, 2017.

On June 13, Thomas J. McInerney became CEO of the former Yahoo Inc., after the departure of then-CEO Marissa Mayer. He was also a board member and chairman of the company. June 19, the Altaba website listed McInerney as the first CEO of new iteration of the company, Altaba Inc.

In September, Altaba sold all 4.6M common shares of Snap Inc. for $69.3M.

Altaba owns Excalibur IP, LLC, a patent company, controls a significant but minority interest in Yahoo! Japan (35.5%) and Alibaba Group (16.3%), and also owns minority investments in Hortonworks, Inc., Gomaji Corp., Ltd, Envestnet, Inc., Qumu Corporation, SeatGeek, Inc., Protagenic Therapeutics, Inc., Eastman Kodak Company, and Paperless Inc..