Group 1 - The S&P 500 is reaching new highs, but investors are advised to be cautious and consider reallocating portfolios towards small and mid-cap stocks driven by catalysts [1] - Gary Alexander has extensive experience in technology sectors, having worked on Wall Street and in Silicon Valley, and has been an adviser to seed-round startups [1] - Alexander has been a contributor to Seeking Alpha since 2017 and his insights are featured in various trading apps like Robinhood [1]