The price of bitcoin was trading at $10,026 on the South Korean exchange CEX while at the same time trading at $9,748 on US exchange Kraken as of early yesterday; the 3 percent spread was not the first time this happened and leaves open the potential for some to take advantage but also shows the immature nature of the market; this has been part of the reason why institutional investors have not fully bought in, though some have and the recent news from the CME could help to ease more concerns. Source.