No, it's not, whenever something like that happens, it's just a coincidence. There's no mechanism that would consistently lead to such price movements, the price is driven by traders, and traders absolutely don't need to sell their assets in order to buy presents for holidays, lol. With Bitcoin, it's better to ignore all the "logical" price patters, Bitcoin price movements are very unpredictable, sometimes you just wake up and see a 20% change and people just can't cope with it, so they start inventing explanations.