Retrieved May 5, 2019. ↑ "Bitfinex Raises $1 Billion in LEO Token Sale Within Ten Days – Trustnodes". www.trustnodes.com. Retrieved December 22, 2021. ↑ "Analysis of LEO burns shows Bitfinex made nearly $300 million from trading fees in 2018". finance.yahoo.com. Retrieved December 22, 2021. ↑ "Initial Exchange Offering of LEO Tokens" (PDF).