After losing nearly 8% through the first three months of the year, the S&P 500 Index has rallied on a renewed AI trade and increasingly bullish investor sentiment. Large- and mega-cap U.S. equities have seen a surge in inflows, helping push the benchmark index up more than 18% since the start of Q2.
Despite the recent turnaround, uncertainty persists. Much of the rally is tied to mega-cap companies benefiting from the memory chip shortage, leaving investors wondering how long the S&P 500’s rally can last. Add in an expanding $1 trillion market cap club and looming initial public offerings (IPOs) from companies like SpaceX and OpenAI, and concentration risk is becoming an increasingly pressing threat to investors’ portfolios.
