credit: cointelegraph 
In a letter reproduced online, Interactive Brokers Group Chairman Thomas Peterffy said that Bitcoin and cryptocurrencies have “no fundamental basis.”
“As a CME clearing member, we are deeply concerned with proposals that would allow Bitcoin and other cryptocurrency derivatives to be cleared in the same clearing organization as other products,” he wrote.
“There is no fundamental basis for valuation of Bitcoin or other cryptocurrencies and they may assume any price from one day to the next.”
Read more: https://cointelegraph.com/news/cme-clearing-member-to-regulator-bitcoin-futures-impossible