According to TechFlow, Bloomberg cited people familiar with the matter as saying that cryptocurrency trading platform Kraken is in pre-IPO financing negotiations. Kraken is seeking to raise more than $100 million, which is expected to be completed by the end of this year. There have been constant rumors about Kraken's listing in the past few years. The company has been busy responding to charges filed by the U.S. Securities and Exchange Commission (SEC) last year, accusing it of operating an unregistered platform and improperly mixing customer funds.

A spokesperson declined to comment on the funding, but said: “We are continually exploring strategic paths to achieve Kraken’s mission: to accelerate global adoption of cryptocurrency. We remain fully focused on investing in this goal.”