I was worried this might happen. The cancellation of Segwit2x and the massive spam attacks on the Bitcoin chain right now created the perfect conditions to pump Bitcoin Cash. It was masterful, really. And Bitcoin Gold also benefitted. I guess the market saw it this way: No free B2X dividend, so that value leaves BTC and gets invested into BCH and BTG.
Naturally, with all the hype around the Bitcoin forks, alts are suffering. To be honest, though, I'm glad. I wasn't able to accumulate much on the last leg down, so this gives me another opportunity to buy the dumps.