It's meaningless to speculate on these short-term price movements. There's a possibility that the pricing is being determined by macroeconomic forces, but then

It's meaningless to speculate on these short-term price movements. There's a possibility that the pricing is being determined by macroeconomic forces, but then it seems like you'd see price movement in traditional commodities as well (like gold) and we're not seeing that. In all likelihood this is the combination of some set of factors -- the CME group's involvement or more people looking to enter the market, etc., and Bitcoin's preeminence in the cryptocurrency space. There's the movement of Bitcoin Cash, which is going up at an even faster clip (now) after stagnated for a while after the post-fork excitement. This is not obviously connected to any of the CME-based news. Most likely is that each coin is acting somewhat independently. As much as you can say that Ethereum is stagnating, it's not stagnating any more than Bitcoin was a year or so ago. Only time will tell if the current pricing changes are reflecting some deeper reality, but I'd hesitate before attributing anything like that until we have more information.