Broadcom's meteoric rise to become the latest trillion-dollar company has solidified the dominance of eight tech giants in the stock market. These companies - Apple, Nvidia, Microsoft, Alphabet, Amazon, Meta, Tesla, and Broadcom - now hold nearly 35% of the S&P 500's total value, a record high and a significant increase from last year. This concentration within just three sectors - all driven by AI themes - raises questions about market speculation and the emergence of a new technological reality.
The magnificent seven – Apple, Nvidia, Microsoft, Alphabet, Amazon, Meta, and Tesla – have got company, with AI giant Broadcom becoming the latest stock market trillionaire.
Historically, the norm has been for the eight biggest stocks to come from six different sectors. In contrast, 2025′s big eight are concentrated within just three different sectors, each stock exhibiting an AI theme. Shop owners who felt ‘betrayed’ by manager attending job interview ordered to pay €13,500 for unfair dismissalWhy? This “bifurcation” is potentially a symptom of speculative excess, with irrational optimists pushing up big growth stocks and neglecting others. Alternatively, says Lamont, it may not be the stock market that has bifurcated, but the underlying firms, with the market “rationally responding to different fundamentals for different types of firms”.
Technology AI Market Concentration Stock Market Tech Giants Broadcom
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