Because of the new Bitcoin fork, all cryptocurrency exchange have to stop trading Bitcoin in order not to lose them, and traders will move to the next cryptocurrency market (with nearly $18,649,021,000 Market Cap ) Ethereum , this will cause a surge in its price for a short period of time (maybe one week) .
That sounds very logical and makes perfect sense. If traders are temporarily unable to trade BTC, then they'll move to the next strongest coin which is ETH.