Off course everyone who has bitcoins can manipulate the bitcojn price but what you have to do is work together becuase you wnont change the price by your self you need
to sell all together and the price will rise for sure!
you don't know what manipulate means!
changes in price are not called manipulation, the fake changes however are. and these changes should be big to be considered real manipulation. so you can't do anything with a small amount even if you can gather multiple people like yourself and try so hard.
yes that is right that the fake change in the price is called manipulating, and we can hear that words specially in stock market, but for bitcoin it is not such an easy task because bitcoin is a universal currency and one need so much hard work and need to invest a lot of bitcoin so as to manipulate the price of bitcoin.