At small time intervals, large holders can influence prices by selling a large number of coins on exchanges or vice versa, starting to buy Bitcoin en masse. But these actions cause only temporary price fluctuations. Somehow the manipulators of the market cannot change the law of the market itself, so if you count on long-term investments, then you should not worry about it. In addition, the really large holders themselves are not profitable by the long-term weakening of the Bitcoin course.
What do you think?
my opinion on manipulation is that it's less prevalent and more difficult to pull off than people think. the market is globally distributed, with some exchanges in shady and unregulated jurisdictions and others tightly regulated. certainly, large players may
try to manipulate the market, but it's easier said than done. what often happens is a smaller whale gets eaten by a bigger whale---or he gets eaten by the market as a whole.
in the end, we can only speculate about the underlying causes for price movement. that includes conspiracies about price manipulation. there's no evidence, of course.