i looks like new money is coming in. or they sold their BTC first and then bought BCH with KRW.
40.66% of the trading volume is from trades on Bithumb: BCH/KRW
13.28% / Bitfinex / BCH/USD.
and this is interesting too:
it's all artificial on exchange there is very little happening on the actual blockchain
If it's as expected roger up to his games he's probably selling BTC at a slow pace to KRW to not crash the price too fast as to maximise his worth and then slowly buy BCH as not to cause the value to increase at a huge rate to do the same maximise his profits