The U.S. stock market is experiencing sector rotation right now. Over the past 2 days, the Dow went up while the NASDAQ went down (different from earlier this year, when the NASDAQ led the rally). Contrary to what conventional technical analysis says, this isn't a bearish sign for the stock market. Sector rotation is more bullish than bearish. https://bullmarkets.co/study-sector-rotation/
The sector rotation is written by my main supervisor! Although I don't believe that strategy works(unless you buy when markets are undervalued and sell when markets are overvalued) markets are indeed manipulated day to day. I also did a research on sector rotation years back. It's just a myth