Bitcoin in US dollars throughout a 24-hour period. The starting price was $67,179.83, and the maximum price was $67,500.
But by day’s end, the price had dropped to $66,500, a drop of more than 3.5%.
This implies that there may have been a daytime sell-off of Bitcoin, which caused the price to drop.
In brief intervals, there can be large swings in the price of Bitcoin due to its extreme volatility.
Source (CNBC)