Yesterday(12/17 00:00 - 24:00, UTC+0), Bitcoin price recorded its starting as $21379, its lowest as $21273, its highest as $23837 and its closing as $22812. After the start of Thursday, bitcoin continued to rise from the previous day, accompanied by a large trading volume, and reached a peak of $23837 at 09:15, and immediately fell to $22335 in 30 minutes with a large sell volume and then rose to $23730 and ended 6.7% up after adjustment.

From the start of the week to yesterday's peak, Bitcoin rose 24.3% and Ethereum rose 14.5%. With the dominance rising to 66.6, the reason that bitcoin has led the cryptocurrency market trend is the result of large investment funds being bought on bitcoin other than altcoins.

I guess this is the background of Bitcoin's surge after surpassing $20,000. There were several news reports that a large amount of money bought bitcoin even when bitcoin rose to near $20,000 and then moved sideways around $19000 for about two weeks. Grayscale fund added more than 1000btc every day, Tether company kept printing hundreds of millions of USDT and futures options open contracts hit a record high.

If this big rising is due to the fall in the dollar value by the continued increase in the dollar printed by the US FED, I guess that in the long run, the day when the bitcoin price will reach $100,000. However, in the short term, it seems more natural that there will be an adjustment as it rose big.