:QUOTE [quotetype:plain, subtitle:Goldman Sachs equity research]
Seven companies now account for roughly 33 percent of the entire S&P 500 market cap. That level of concentration has not been seen since the early 1970s Nifty Fifty era.


:STATS

:COUNTER
$17 trillion in combined market capitalisation

:NOTE.half
The seven: Nvidia, Microsoft, Apple, Alphabet, Amazon, Meta, and Tesla. Each reached its position on a different thesis: chips, cloud, devices, search, commerce, social, and autonomy.
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:NOTE.half
Nvidia alone accounts for roughly $3.5 trillion. Its data center revenue grew 122 percent year on year in early 2026 on AI chip demand that still outstrips its own production capacity.


:THREAD

:LINK
https://www.goldmansachs.com/intelligence/pages/the-magnificent-7.html
Goldman Sachs: The Magnificent 7 analysis