looks like the volume went well back over finex in the last 24 hours, should imagine many people panicked and bought BTC to withdraw, expecting them to lose volume next few weeks.
i was watching the ticker during some of the high volume periods, and it looked a lot like huobi. no fee trades, then we start seeing hundreds bought and sold right at the spread within seconds/minutes of each other. and then the price hardly moves until
other exchanges move. no fees = can't trust the volume.