I have been observing a trend from last year bitcoin price movements to this year movement.
I have observed how we're getting so much positive news and adoption about bitcoin this year, but still the prices refuse to go up. If this was last year a single positive news will have pumps the prices by at least 10% or more.
Its that positive news don't longer have any effect on the price movement or is their any manipulation going on.
Yes positive news does have a huge impact on the price of bitcoin and negative news even have far worse impact on bitcoin as people tend to believe negative news quickly than positive news and also negative news spreads like fire in the jungle so the affect is also seen very quickly as compared to positive news.
Yes, you are right because negative news is easy to spread and especially those they called whales in the market they ride on that news they keep spreading until smallholders are easy to get panic and sell their holding coins. But when it comes positive news it is slowly recovered before the price was officially uptrend in the market.