This stock market rotation is the ‘lifeblood’ of the bull market as S&P 500 logs record MarketWatchS&P 500: Signs Of Weakness, Week Starting 21st October (Technical Analysis) (SP500) Seeking AlphaWhat the charts say about whether the S&P 500 can continue higher into year-end CNBCUpsides, Downsides to Watch For Expiration Week Schaeffers ResearchS&P 500 is at record highs, but beware of October’s choppy background for the index MSN