Bitcoin whales holding between 1,000 and 10,000 BTC have sold over 30,000 BTC (worth $1.86 billion) in the past four days.This selling activity followed Bitcoin's price rally triggered by the US Federal Reserve's interest rate cut.Whale sell-offs can lead to caution among other investors and may result in selling pressure or a temporary price pullback.Despite the recent whale selling, Bitcoin's price has remained relatively stable, with a minor decline of 0.1% in the past day.