Nvidia, Apple 'Too Big, Too Soon'? Relax — This Same Thing Happened In The 1930s

Wall Street can't agree on whether the market has a concentration problem.

The Magnificent Seven —Nvidia Corp.(NASDAQ:NVDA),Apple Inc.(NASDAQ:AAPL),Microsoft Corp.(NASDAQ:MSFT),Amazon.com Inc.(NASDAQ:AMZN),Alphabet Inc.(NASDAQ:GOOG) (NASDAQ:GOOGL),Meta Platforms, Inc.(NASDAQ:META) andTesla Inc.(NASDAQ:TSLA) — now account for just over 30% of the entire U.S. stock market. That's a level critics say leaves the S&P 500 dangerously dependent on a handful of mega-cap tech firms.

Some investors recommend rotating into equal-weighted strategies to pull back from equities altogether. Other experts, however, insist that...