How much of the S&P 500 does Nvidia (NASDAQ: NVDA) make up and how exposed are you through your S&P 500 index fund? Theoretically, all S&P 500 index funds should have the same proportions of assets invested in each stock, so let's take a look at the Vanguard S&P 500 ETF (NYSEMKT: VOO).

I won't keep you in suspense. According to Vanguard's website, the Vanguard S&P 500 ETF has 6.1% of its assets invested in Nvidia stock.

One caveat is that this data is as of May 31 and the price of Nvidia is up by about 15% since that time, through June 21. Since the S&P 500 is a weighted index, this implies that the concentration of Nvidia in S&P 500 index funds could be significantly higher than the latest portfolio data indicates by the time the end-of-June updates are revealed. Based on a 15% gain in the stock, this means the likely allocation is about 7%.

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Source Fool.com