How that chart looks, it's hard not to believe that's one buyer given that the movement seems to happen at a very similar time each night. I seem to recall the same thing going on last month during the initial rally to about ~10. If it is one person, it seems to me that they're intentionally moving the market - someone who just wanted to accumulate would likely spread it out more so as to avoid paying such a premium over current ask. It's possible they analyzed things and chose that time to buy because they expect the market to be at its thinnest at that time of the night, so their money would have the most power to move the market. Given that it's impossible to to determine a price target on bitcoins based on fundamentals, it's very possible that a strategy of pushing the market up with a sharp buy and then selling throughout the day as it plateaus at a nice price could be a successful strategy.
Could be, but that is exactly equivalent to saying that they wait until their money will get them the least.
