Any good conspiracy theorist will notice that the up and down movement usually occur in a $50 fluctuation cycle, and this indicates manipulation and mini pump&dump scenario. There has to be someone behind this, and they are making tons of money because of this. A group of whales on different exchanges could manage to manipulate the price in such a narrow margin, and still make a lot of money. I hope this is not true and normal supply and demand are causing this, but it's just too obvious. ^hmmmmm^
I do believe manipulating Bitcoin with such a small currency value at best is possible. Yes, I have noticed it's growth is within $50-$100. It's just that Bitcoin seems rather intelligent enough to find some kind of way to only make it grow. People said cryptocurrencies weren't possible. Bitcoin proved this incorrect.