This rotation in stocks as S&P 500 logs record peak is bull market ‘lifeblood’ MarketWatchWhat the charts say about whether the S&P 500 can continue higher into year-end CNBCS&P 500: Signs Of Weakness, Week Starting 21st October (Technical Analysis) (SP500) Seeking AlphaUpsides, 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