Trading just started and CBOE is not nearly as big and as active as CME.
Also, trading volume for futures in general is pretty low. You're rarely going to see volume above 100k a Sunday night. Coffee futures have around 23k volume right now.
I’m well aware, it was meant as a data point for anyone not aware who could possibly think for a second their public website going down has anything to do with demand :)
Currently, volume is over 2k. On a Sunday night. That is over 30 million worth of Bitcoins. Volume will probably skyrocket come Monday when the markets are open.
It's a sad day for Bitcoin market makers though. Previously there weren't many major players.