Financial experts have been cautioning for the past year about a potential stock market crash, with many attributing the risk to the popping of the artificial intelligence (AI) bubble. Despite these warnings, major stock markets have continued to see gains, with the FTSE 100 up 9 percent and the S&P 500 Index up 12 percent this year.

Commentators, fund managers, and economists who anticipate a significant market correction believe it will be initiated by sharp declines in the share prices of major US tech companies. The share price of Nvidia, for example, has seen a 940 percent increase over the last five years. However, it is expected that no stocks or markets will remain unaffected and all will likely be dragged down.

History shows that stock market bubbles invariably burst. The primary challenge for investors lies in predicting the timing of such an event and determining the appropriate course of action. Options include remaining invested, selling assets and moving to cash, or ensuring a portfolio is sufficiently diversified to mitigate the impact of a market correction on long-term investment objectives.

Some financial professionals advocate for government bonds as a safe haven, citing rising yields globally. However, others maintain that with long-term investment horizons and a tolerance for market volatility, remaining invested is a sound strategy. This approach has been advocated by some financial journalists for decades.

Regardless of the chosen strategy, experts emphasize the importance of ensuring an investment portfolio is "fit for purpose" and possesses built-in resilience. This may involve making changes to an existing portfolio to enhance diversification. Such diversification should extend beyond stock markets and investment funds to include other financial assets like precious metals, such as gold and silver, and government bonds.

The recent surge in prices of many US tech stocks has led to portfolios becoming heavily weighted towards the US market. Experts suggest that investors holding significant positions in the "magnificent seven" stocks—Alphabet, Amazon, Apple, Meta, Microsoft, Nvidia, and Tesla—consider trimming them, particularly if substantial paper gains have been realized. This can be done within tax-efficient accounts like ISAs or self-invested personal pensions to avoid capital gains tax (CGT). For those holding these stocks outside of such wrappers, awareness of the annual CGT allowance is advised, as gains above this threshold will be subject to taxation.

Investors should also review their investment funds for any substantial exposure to the "magnificent seven" or US tech stocks generally. If the level of exposure is concerning, taking some gains may be prudent. Income-oriented investment funds are suggested as a means of diversification. Additionally, gold and silver are recommended as potential portfolio additions, with forecasts suggesting price increases driven by geopolitical uncertainty and the demand for silver in electrification technologies like solar panels and electric cars.

For direct exposure to rising precious metal prices, funds that track gold or silver prices, managed by firms such as iShares and Invesco, are available. Information on various bond funds, including popular UK gilts, can be found on investing platforms. Investors are encouraged to review their own portfolios regularly to ensure they remain appropriately positioned for market conditions.