Tips to Know the Appropriate Amount of Stock in an Investment Portfolio

Tips to Know the Appropriate Amount of Stock in an Investment Portfolio

Although several people may have a perspective on the “proper” amount of shares to keep in a portfolio, the truth is that there is no one accurate answer.

The quantity of shares one should have in a portfolio is determined by a variety of criteria, including the nation of residency and investing, the investment time horizon, market conditions, and the predisposition for monitoring market news and being current on current holdings.


Investors spread their assets among a variety of investment channels to reduce their potential losses. Diversification, in particular, enables investors to lessen their susceptibility to market volatility, which is regarded as the risk associated with a single firm or industry.

Although investors cannot diversify away systematic risk, such as the risk of an economic downturn pulling down the global stock market, scholarly studies in the field of modern portfolio theory have showcased that a well-diversified investment can significantly decrease unsystematic risk to near-zero thresholds while preserving the same expected profit threshold as a portfolio with elevated risk.

To put it better, while investors must embrace more systematic risk in exchange for the possibility of higher returns (known as the risk-return tradeoff), they do not typically benefit from improved return potential when taking on volatility.

The lesser the unsystematic risk exposure is, the more stocks one has in their portfolio. A portfolio of 20 stocks, especially ones from different sectors or businesses, is far less dangerous than one with only 5 stocks.

The transaction expenses of owning additional stocks can mount up, so it’s usually best to keep the minimal amount of stocks to completely reduce unsystematic risk exposure. So what’s this figure, exactly? The reality is that there is no universally accepted conclusion, although there is an acceptable range of possibilities.

The amount is about 20 to 30 equities for investors in the United States, where stocks move around on their own (are less connected to the general market) than they do abroad. The majority of the study in this field was done before the revolution of online investing (when fees and transaction costs were substantially higher), and most research articles put the number between 20 and 30.

According to recent studies, investors who take advantage of online brokers’ low transaction costs can best maximize their investments by owning around 50 equities, but there is no agreement.

Take note that these claims are predicated on prior stock market data and so do not promise that the market will display the same characteristics in the next 15 years as it did in the previous 15.

The majority of investors, on the other hand, keep their portfolios at a minimum of 15 to 20 equities. If the prospect of researching, selecting, and maintaining awareness of 20 or more stocks intimidates you, contemplate using index funds or exchange-traded funds (ETFs) to provide fast and easy diversification all over various industries and market cap groups, as these asset classes successfully let you buy a tray of stocks in one transaction.


From the above, it is evident that there is no specific amount of investment one can hold, it all depends on the financial knowledge of the investors.

The Author

Oladotun Olayemi

Dotun is a financial enthusiast who specializes in first-in-class financial content, including crypto, blockchain, market, and business, to educate and inform readers.