Nvidia Corp (NASDAQ:NVDA) just lost the face of the franchise, and the ETF world is doing some uncomfortable math about it.

According to ETFIQ data, 666 U.S.-listed thematic and core ETFs held Nvidia as of Wednesday, with aggregate holdings worth approximately $554 billion across those funds with available data. That's up from the $540.3 billion exposure identified in the previous analysis on Nov. 6.

Here's the part that should get your attention: a 10% decline in Nvidia alone would translate into an estimated $55.4 billion reduction in the combined market value of these ETF positions, assuming holdings remain unchanged. To be clear, that's a mark-to-market impact, not actual investor losses or fund outflows. It's the paper value of the exposure moving around, not money leaving the building.

Since Jensen Huang's resignation became official, the company's share price is down more than 5% at last check on Thursday.

Semiconductor ETFs Face Concentrated Exposure to Nvidia

• The VanEck Semiconductor ETF (NASDAQ:SMH) allocated 20.75% of its portfolio to Nvidia, while the VanEck Fabless Semiconductor ETF (NASDAQ:SMHX) had a 20.04% weighting, based on Nov. 6 holdings. Nonetheless, on Wednesday, SMH sharply reduced its Nvidia allocation to 8.9%, and SMHX to 17%.
• The Vanguard Information Technology ETF (NYSE:VGT) had 17.58% exposure.
• The Invesco QQQ Trust (NASDAQ:QQQ) holds approximately 6.8% of its portfolio currently.
• The Global X Magnificent Six ETF (BATS:SIX) deserves special mention. The fund launched on Wednesday, right in the middle of the scandal around Jensen Huang and the uncertainty around Nvidia's future, with almost 20% weightage assigned to Nvidia.

Will ETF Investors Start Rotating?

With Nvidia CFO Colette Kress now serving as interim CEO, passive ETF holdings don't automatically change. Funds tracking market-cap-weighted indexes will continue holding Nvidia according to their benchmark allocations, unless index changes or market movements alter its weight.

Active ETF managers, however, could reassess their exposure if leadership uncertainty threatens Nvidia's competitive position or growth outlook.

The transition also puts Nvidia's ability to maintain its dominance in AI infrastructure under scrutiny. Investors must now assess whether its technology roadmap and customer relationships can remain intact without its co-founder. Whether Nvidia's leadership transition can spur diversification across the semiconductor and AI ecosystem remains to be seen.