It is not difficult to see from the daily chart that
U.S. stocks, especially the NASDAQ, indeed have a correlation with Bitcoin.
However, I personally feel that it seems like Bitcoin is leading U.S. stocks rather than the other way around.
In the days when U.S. stocks opened high and then fell, Bitcoin had already moved up first, because Bitcoin operates 24 hours without interruption, while U.S. stocks have time restrictions. After Bitcoin leads the way, U.S. stocks open high without giving retail investors a chance; the subsequent fluctuations are equivalent to the market rising while I want to get in but there's no way!