Since most of the major altcoins move up or down at the same time as bitcoin, aren't they all controlled? How does it work?
This is something I constantly consider. When bitcoin moves, the portfolio's altcoins follow suit. This common pattern makes me believe in bitcoin more because it controls the movement of others. Other altcoins may move but have no effect on the price of bitcoin, but when bitcoin moves, all other altcoins must follow. In the case of a bull run, it is impossible to overstate how all existing coins hit new ATH as bitcoin moves to a new ATH. I have no opinion and cannot make any assumptions about all of them being controlled.