This is extremely low volume. Cboe futures settlement is based on Gemini auction price. This is easily manipulated, so I would be wary of trading BTC near settlement time of 1/17 4pm ET. Note: CME futures settlement is based on an index of exchanges. Much harder to manipulate.

Charlie Lee [LTC]
‏@SatoshiLite
60 Min
Let's say someone has a huge long Cboe futures position and he's underwater before settlement time of 1/17 4pm ET, it will be smart for him to buy BTC on Gemini auctions to push the auction price up, which will make him lose less or even make money on his futures trade.
On the flip side, someone shorting futures will do the opposite. So the auction price is going to be manipulated but we don't know which way and how much. This will affect Gemini spot exchange and also other exchanges due to arbitraging. Prices could be very volatile around then.