The S&P 500 Has An Nvidia Problem

The S&P 500 faces limited upside as the rally hinges on Nvidia holding critical support at $165. A breakdown for the chipmaker could trigger a broader decline, particularly as 10-year Treasury yields climb past 5%.

The S&P 500 has spent the past three trading sessions trying to find its footing following the sharp sell-off on November 5. From a volatility standpoint, there is still a little room for the VIX 1-day to decline further after closing today at 13.95. However, there isn’t much volatility premium left to unwind, suggesting the index may have some additional upside, but likely not much.

Meanwhile, the VIX index is roughly where it should be based on single-stock implied volatility, implied correlations, and the dispersion index. That suggests there is limited room for further compression in index-level implied volatility, meaning volatility is unlikely to provide much additional support for a sustained rally.

TradingView chart showing S&P 500 at 7,520.93 trending up over a year, with VIX volatility model (19.46 vs 15.5 model) and sector dispersion/correlation indicators below, all showing elevated but range-bound volatility spreads

In the meantime, there isn’t much to point to at the index level, except that the SPY-to-RSP ratio is once again approaching a breakdown below support at 3.4. For now, we are still waiting to see which direction the ratio ultimately breaks.

The SPY-to-RSP ratio has largely moved in tandem with Nvidia (NVDA), suggesting that where Nvidia’s stock goes from here will likely play a significant role in determining the ratio’s next move.

TradingView chart comparing SPY/RSP ratio and NVIDIA stock price from 2023 to late 2026, with RSI indicator below showing both near oversold levels around 32 and 28

Nvidia is now sitting on the edge, with critical support around $165. A break below that level would likely deal a significant blow to the SPY-to-RSP ratio, potentially pushing it below its own support level. It’s difficult for me to envision a sustained rally in the S&P 500 without Nvidia participating. At this point, where Nvidia goes, the broader market is likely to follow.

NVIDIA stock chart on NASDAQ, 4h, rising from about 40 to a peak near 240 then dropping sharply to 168.79, with RSI falling into oversold territory below 30

Meanwhile, the 10-year Treasury yield rose sharply today following the hotter-than-expected CPI report, reaching 5%. The move appears to be a clean technical breakout, suggesting yields could continue to climb from here.

Chart of US 10-Year Treasury yield rising from 4.3% in July to peak near 5.3% in October, then declining to 5.000% by Nov 10, with RSI at 68.43

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