Here is my theory. When BTC went from 6.4 to 3.6K, XLM/XRP held really well while ETH was falling like crazy. From that point on, XLM/XRP have been kind of performing poorly (especially XLM) where as ETH is surging at the moment. I think there might be some big money that is being switched back and forth and as such, I suspect that when ETH stops pumping right before the fork, this big money will go back to XLM/XRP to start another surge.