Portfolio Performance

What is portfolio performance vs. the S&P 500

Portfolio performance vs. the S&P 500 is a comparison of the return on an investor's portfolio with the return on the US stock index S&P 500. This index represents the price development of the shares of the 500 largest publicly traded companies in the US and is often used as a benchmark for evaluating investment success.

Why compare with the S&P 500

• A standard benchmark – the S&P 500 is considered a key measure of US stock market performance.
• Strategy validation – if a portfolio consistently outperforms the S&P 500 over the long term, the investor's strategy may be considered successful.
• Identifying weaknesses – lagging behind the index may indicate the need to change the portfolio's composition.

How performance is measured

Performance is usually expressed as a percentage over a certain period (month, year, 5 years). For a more accurate comparison, the following are taken into account:

• Total return – includes capital gains and dividends.
• Risk-adjusted return – for example using the Sharpe ratio.
• Volatility – how much the portfolio's value fluctuates compared to the index.

Advantages and limitations of this comparison

Advantages:

• A simple and clear benchmark.
• Enables an objective evaluation of the investment strategy.

Limitations:

• The S&P 500 consists only of US stocks – globally diversified portfolios may have a different profile.
• It does not take into account other asset classes such as bonds, commodities, or real estate.

Portfolio performance on Stonkee

On Stonkee users can view a chart comparing their portfolio's performance with the S&P 500 in real time. The system also allows you to simulate how the portfolio would have developed if the investor had invested only in the index.

Summary

Portfolio performance vs. the S&P 500 is an important indicator that helps investors determine whether their investments are outperforming or lagging behind the market over the long term. Regularly monitoring this comparison can lead to better investment decisions.