I really do not see why this is such a big deal, maybe to you that seems like a big movement because you are a newbie in this market, but that is nothing, the market can move much more than that, so what you are seeing is nothing more but the natural fluctuations that will happen in ethereum and most coins, do not think much about it because the most likely thing that will happen is that you will be unable to find any specific reason about why ethereum moved in that way.