Interactive Brokers began offering clients the ability to trade bitcoin futures at the start of trading on the Cboe Futures Exchange (CFE) on Sunday night, December 10th, 2017.

"Interactive Brokers was on the buy side of the low print of 14,710," said Thomas Peterffy, founder, Chairman and CEO of Interactive Brokers.
 
"A Registered Investment Advisor on the Interactive Brokers platform purchased two March contracts in the first minute of trading."
However, as Interactive Brokers explains, there are some notable constraints...

Due to the extreme volatility of cryptocurrencies, clients will be unable to assume a short position.
 
In addition, only limit orders will be accepted.