(The author is a Reuters Breakingviews columnist. The opinions expressed are his own.)
By Sebastian Pellejero
NEW YORK, Nov 21 (Reuters Breakingviews) - Nvidia and its Big Tech brethren grew their bottom lines a collective 18% last quarter, but other S&amp;P 500 members like Delta and Corning also overcame economic challenges for an impressive 12% bump. Such rich valuations, however, will depend heavily on sustained efficiency.
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<h3>CONTEXT NEWS</h3>
The S&amp;P 500 Index is down about 3% in the month through November 20 and up 11% since the start of 2025. (Editing by Jeffrey Goldfarb; Production by Pranav Kiran)

NVDA

Sebastian Pellejero discusses the performance of Nvidia and other Big Tech companies, which grew their bottom lines by 18% last quarter. Meanwhile, other S&P 500 members like Delta and Corning achieved a 12% increase despite economic challenges. The sustainability of these valuations depends on continued efficiency. The S&P 500 Index is down 3% in November but up 11% since the start of 2025.

- Nvidia and other Big Tech companies reported an 18% increase in profits last quarter, while S&P 500 members like Delta and Corning achieved a 12% growth despite economic challenges.  
- The sustainability of these high valuations is contingent on maintaining efficiency.  
- The S&P 500 Index has decreased by approximately 3% in November but has risen 11% since the beginning of 2025.  

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