Wow very interestening. I can tell that if a group "X" trys to push up a coin they can easily do it.
For people with much BTC it does not hurt to invest about 20 BTC in order to make another 20 BTC.
I watched my first mega push back in 2014, as a coin increased it's value by a factor 100, "crashing" again to a level about 130% where it was before.
Very impressive to see what people can do with much bitcoin on the altcoin market.