That is why I never sold off the free bitcoin cash I got after the fork. And later on when I bought some more BTC, I also made sure to buy the exact same amount of BCH, because you never know which one rises more. In this situation, I'm happy about either of them rising :) By the way, I also just wrote an article about why BCH is rising, https://steemit.com/bitcoincash/@hmushtaq/bitcoin-cash-is-rising-and-this-is-the-reason-why