Siebert Financial flags S&P 500 concentration risk as NVIDIA selloff exposes index vulnerability

• Heavy concentration in the S&P 500 leaves index investors exposed to company-specific risks despite broad holdings.
• The largest S&P 500 ETF's top 10 holdings represented roughly 37.6% of assets; its technology exposure was about 36%.
• NVIDIA's 4.27% decline Monday imposed an estimated 0.30-percentage-point drag on the index, reflecting its roughly 7% weighting.
• The selloff followed an independent investigation into reports CEO Jensen Huang was targeted by a foreign intelligence effort.
• NVIDIA's November 17 earnings represent another company-specific event with significant implications for index investors.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Siebert Financial Corporation published the original content used to generate this news brief on November 10, 2026, and is solely responsible for the information contained therein.