The Globe and Mail reports in its Wednesday, July 19, edition that BofA Securities U.S. quantitative strategist Savita Subramanian looked at the "Magnificent Seven" -- the S&P 500's biggest stocks, which account for $11-trillion in market cap and 73 per cent of the index's returns during the first half of 2023. The Globe's Scott Barlow writes that these big boy stocks are: Alphabet, Amazon, Apple, Meta, Microsoft, Nvidia and Tesla. Ms. Subramanian sees echoes of the late 1990s technology bubble but notes the important difference that artificial intelligence benefits bigger companies with the biggest data-processing power. Her final advice for investors regarding the Magnificent Seven is to "avoid crowded, expensive tech companies losing share. But mega-cap tech companies that are market share leaders should be considered core holding."