lately the value of bitcoin tends to be stable and persist in the range of $ 3000. when a lot of altcoins keep moving up or down, bitcoin is still very slow, and that certainly makes investors and hodlers a little hurt by this situation. but this is a good start to starting market movements next year.
Bitcoins price movements are generally slower as compare to the altcoins. The reason for this is that bitcoin marketcap is much larger than any of the alt and it is not easy to manipulate the bitcoins easily as compare to alts which are low in volume.
I find it quicker though. Exactly the reason why most traders like to trade BTC too because its easy to profit with a good timing. I don't think you can manipulate prices by yourself. If in a day the price hit up to 2%, its a spike and you might wanna sell and wait for the price to dip again.