Follow the allocation, not just the number of names
A small position adds little balance when most of the portfolio sits elsewhere. Check stock weights first, then group those same weights by sector and industry. Different company names can still expose you to similar business conditions.
These are different views of the same money, not independent protections to add together. Country labels and fund names also have limits: company domicile does not describe all revenue markets, and ETF overlap requires actual underlying holdings.
Different names can share one dependency
15 stocks, but 53.0% in three positions
AAPL, MSFT, NVDA hold 53.0% of the entered allocation. The other 12 holdings share 47.0%. All three largest positions are classified as Technology.
Interpretation: The three largest positions have more weight than all the other holdings combined. Different company names can therefore repeat a shared business exposure; the stock list alone conceals that connection.
Check your own portfolio
Portfolio Score’s default Diversification score combines Stock, Sector and Industry Balance. Use those views to locate dependencies, then examine related movement in Risk. A benchmark provides context, not a compulsory allocation or a universal ideal number of stocks.
- Start with your largest holdings and their combined weight. Ask how much influence the remaining positions can realistically have.
- Look inside the dominant sectors and industries. Check whether apparently different holdings repeat the same exposure, then inspect their historical correlations.
- Test a different allocation without rewriting actual trades. More even weights may reduce a dependency, but can also change return or income exposure; equal weights are not automatically preferable.