The number of ICO on Ethereum is rising in an exponential wave. Those ICOs are collecting a huge number of Ethereum that people needs to buy making the price of ethereum rise. Then when the ICOs finished collecting it, they need to sell it in order to have fund for their project, making the price of Ethereum go down.
As there are more ICOs created than finished, price of Ethereum is in a Status Quo and may even go lower a bit.
As soon as ICOs Boom is finished, you can expect to see Ethereum price going really high.