Price manipulation is done by using many ways.Publishing speculative news in favour of boosting bullish trend is a way.Here on the below link,we could see that news sites continuously release news that bitcoin price is to boom.If we see such moves,we should be cautious about investing otherwise we may get fooled and we might have to regret for our wrong investment.Don't let news media to decide your fortune.
https://www.reddit.com/r/Bitcoin/comments/9dimq2/headlines_two_days_ago_this_is_how_market/We all know that bitcoin is a part of investment, the most beneficial investment, note the word investment and apart from being part of investment bitcoin is also a volatile crypto wand both these factors makes the valuation of bitcoin so flactuating and this is the reason why the prices of bitcoin goes up and down and it varies according to market demand and supply, higher the number of investors and higher the capital they are investing into bitcoin, higher will be the demand and vice versa and this is the strategy for price manipulation.