BTC market cap is relatively low to other assets classes but it's not super tiny, still kinda hard to manipulate. XRP is more easier to PnD
Nope I've seen that bitcoin is number for big marketcaps in the world under the dollar? Marketcaps reach hundreds of millions of dollars for bitcoin alone. of course it will be difficult to manipulate that big marketcaps right? but the fact is the market is very sensitive with negative news?
It will be difficult if those who try to manipulate does not have a big percentage of the entire marketcap.
I am still believing that there are big organization of people who can make a manipulation, like what you said, negative news could be one of the causes
but the market will not move if the whales will make an action.