This may be a stealthy pump and dump. The whales have been shifting their behavior as it has become more and more scrutinized: it's pretty easy to dump and then let the market do the work of an adequate rise while buying smaller, stealthier amounts. Then do the dump again. However, not everything is caused by the whales. Either way, be wary going forward.
Based on past behavior, I might expect something to happen in roughly three hours time from this posting. There seems to be certain times of day that there are biggish shifts. It's not clockwork, but the timing is interesting. Now that it is being called out and if others talk about it, it may get shifted, just like the classic pump and dumps have been.
If there are no major moves, I would not expect the range to rise more than $6550 today and probably not fall more than $6250. If you have bots that can take advantage of the small percentage dips, then do so. Just don't put all of your eggs in a single basket. Make sure you have a spread. Make sure you have a reserve. Be ready for a loss of on some of your transactions, but on the whole you need to make it profitable...or else why are you here?! ;)
Good luck!