In an efficient market, prices in the futures and spot markets tend to converge. Bitcoin futures, however, are trading at a more than 10% premium compared to prices in the spot market.
Arbitrage opportunities
In an efficient market, arbitrageurs spot price differences and make contra-trades in both markets, netting a profit without taking any risk. In this case, arbitrage traders can sell Bitcoin futures and buy Bitcoins in the spot market, locking in a profit irrespective of the way Bitcoin's price moves. According to Bloomberg, Bitcoin futures command a premium of ~13% since trading began on CBOE on Sunday.
https://cointelegraph.com/news/why-are-bitcoin-futures-trading-for-higher-prices-than-bitcoin-itself
follow me
Bitcoin still isn't an efficient market. The barrier to entry is still too high for the masses. But it's getting better.