not too stable because we can see in the market, the bitcoin price is up and down and for today, we can see after the price is reach the higher price, now the price is getting down so we should be careful when we do trading. but if we only save our bitcoin as investment, then we don't have to worried about up or down the price because we are make investment for long term and we can sell our bitcoin in maybe 2 years later but it is only few people that do this.
these ups and downs are more than normal and they happen in any market, and since bitcoin market is smaller, the changes can be bigger.
and besides you shouldn't even be talking about these changes unless you are a day trader and want to take advantage of these shorts. right now price is back at 1006+ dollars. and i doubt that you are a day trader.