How Nvidia is Shaping the S&P 500’s Performance in 2024
The S&P 500 Index is a well-known stock market index that tracks the performance of 500 of the largest U.S. companies. Many large-cap ETFs passively track the broad index, and investors use it as a benchmark to gauge the relative performance of their portfolios. This year, a unique phenomenon is impacting the S&P 500. A single stock has contributed over one-third of the S&P 500’s total return, which means its inclusion or exclusion in different market indices has made a big difference.
Nvidia, a leading semiconductor company in the artificial intelligence (AI) industry, is rapidly growing. Companies like Microsoft, Amazon, Google, and Facebook-parent Meta are spending billions on Nvidia’s computer chips to train their AI models. The company’s strong earnings growth has caught investors’ attention. The stock has gained almost +170% year-to-date and recently surpassed Apple as the second biggest S&P 500 holding. Due to its high index weight and strong return, Nvidia has contributed 33% of the S&P 500 Index’s year-to-date return.
How often does one company account for such a large portion of the index’s return?
The answer is rarely.
The S&P 500 chart below shows the stock that contributed the most to the index’s return by year. Between 2016 and 2023, the stock with the most impact contributed an average of one-tenth of the S&P 500’s return. The biggest previous contribution occurred in 2020 when Apple contributed 23%.
Our team wanted to share this market statistic for two reasons. First, it is rare for one stock to account for a significant portion of the S&P 500’s return. This market is one for the history books. Second, Nvidia’s dominance has implications for portfolio analysis. The chart shows how the S&P 500 would have performed if its holdings were weighted equally rather than by market capitalization. The market-cap-weighted S&P 500 Index has gained +14.1% as of June 13th, while the equal-weighted version of the S&P 500 has only gained +4.4%. This year’s performance shows that the headline return can overstate the average company’s performance, but this is not always true. Between 2000 and 2023, the equal-weighted S&P 500 outperformed its market-cap-weighted peers 15 out of 24 years.
Looking beyond the headline market return is essential when analyzing portfolio performance.
Stocks with the Biggest Contribution to the S&P 500’s Total Return
S&P 500 YTD Return (Market Cap vs Equal Weight)
Important Disclosures
This material is provided for general and educational purposes only and is not investment advice. Your investments should correspond to your financial needs, goals, and risk tolerance. Please consult an investment professional before making any investment or financial decisions or purchasing any financial, securities, or investment-related service or product, including any investment product or service described in these materials.