Uphold CEO Simon McLoughlin said the company is currently exploring an initial public offering (IPO). McLoughlin said, Uphold's board has hired FT Partners to explore strategic options, including an IPO in the United States or a sale to another company. While McLoughlin would not comment on the valuation, one person familiar with the matter put it at more than $1.50 billion. FT Partners did not respond to a request for comment.