Vetle Lunde, head of research at K33 Research, said in an interview with CNBC that futures unpositioned squaring contracts on the Chicago Mercantile Exchange derivatives exchange have hit an all-time high, which is how most U.S. institutions currently buy bitcoin futures contracts, but many traders have been waiting for spot bitcoin ETF options on major exchanges such as the New York Stock Exchange and Nasdaq because it can enhance liquidity and provide hedging tools. Vetle Lunde added that demand for leveraged long exposure to bitcoin and ether is climbing, and VolatilityShares' BTC exposure has also previously hit an all-time high.