Because maybe people are bored of taking 10 USD profits per coin. The halving is next summer, if you buy BTC at 250 USD why do you want to sell on a mini pump to 260-265? The price will probably go to at least 400-450 next summer because of the halving & that's not even allowing for Gemini opening, ETF regulation etc.

My advice is to HODL your BTC for at least 2-3 years, see where the price goes. I really doubt it's going to go down much if at all. BTC is gaining more exposure, more positive media coverage. I wouldn't sell 1 satoshi at this price, I'm dreaming of way bigger. There will be no huge dump now, not from this price.