it depends on the news and the timing of it. also it depends on the market itself too.
for example bitcoin market is a lot bigger than any altcoin market so the new effect on bitcoin is not the same as the effects on altcoins. a simple news can push an altcoin up or down a lot more than it can bitcoin's price.
also the reality of the news and the history of the effects of such news can make a difference. for example when an exchange is hacked there will be panic but also speculators expecting a price drop so the price WILL drop. or when a shitcoin is listed on a big exchange it creates hype but also speculators know in the past it has led to price rise so they buy it and price WILL rise.
That is close to what I expected for this question. It has become trend these days that whenever the news channel publishes something then it surges like fire through people's brain and they start analysing the market positive and negative approaches and thus market turns on them accordingly.
It reminds me a picture that is fit into mind and related to my grandpa who is always sitting in front of the TV and turning on the CNBC for understanding the stock situation of NYSE and rest and make the decision based on what the CNBC has to say about it!Thats it, that can be related with the current matter and confirm that it does drive people and market in a direction.