Why does Bitcoin jump up and down?

[NatYaros]

It jumps because people wipe them out. If the crowd is more calm we could have more stable situation.

[maxj57634]

What things may influence ups and downs of Bitcoin?

There are many things or aspect that drastically changes the price of bitcoin in the market, but one common things that can attribute to it is the movement of whales, controlling vast numbers of account in different exchanges causing a chain effect, others panic at thing when they see a dip but others have some evil smile to it.

4. ....what else?...

Other than that the implementation of new technologies is also causing the price to change and dip at a not so alarming level, but if the technology has been added then the price of bitcoin will go up again.

[Fippy]

Isn'it very obvious? Because there is a lot of fud, and fomo over all the cryptocurrencies, not just on bitcoin.
Maybe if bitcoin starts going up, a lot of people decide to move to ethereum, and then it starts going down again. That is how it works.

[TERA2]

Bitcoin grows fast but it also has investors that jump way head of the growth trend and inflate the price, leading to profit taking and a crash later. This happens in cycles inside of cycles inside of cycles - called price discovery.

[owengtam09]

There's a lot of us who made panic selling I think because bitcoin price now is getting low. I think that is the reason why bitcoin price is getting down right now. Then those who wants to invest with a low price, they think that this is the right time for them to buy bitcoin. Well it is our choice if we want to buy or to sell our bitcoin now.

[shahzadafzal]

I guess many new projects and new crypto currencies popping daily. Sine they are cheap and almost 90% of those start with crowd sells in bitcoins. and people sell their bitcoin to buy those coins.

Also investments in bitcoin are slowed down reason is same. To me $15k price for bitcoin is ideal and will dance around it for long time.