What is Granular Portfolio?
676 reads · Last updated: December 5, 2024
A granular portfolio is an investment portfolio that is well diversified across a wide variety of assets, typically with a significant number of holdings. Because this type of portfolio contains a large number of positions in different asset classes and/or sectors, it is considered to have a lower overall risk profile. Conversely, portfolios that have "low granularity" have fewer positions or contain highly correlated assets. They are less diversified and have a higher overall risk profile.
Definition
A granular portfolio is an investment portfolio that is widely diversified across multiple assets, typically with a large number of holdings. This type of portfolio is considered to have lower overall risk because it holds significant positions across different asset classes and/or industries. In contrast, a portfolio with 'low granularity' has fewer positions or contains highly correlated assets, making it less diversified and higher in overall risk.
Origin
The concept of a granular portfolio originates from Modern Portfolio Theory, introduced by Harry Markowitz in the 1950s. Markowitz emphasized reducing investment risk through diversification, a principle that has evolved into today's granular portfolio strategies.
Categories and Features
Granular portfolios can be categorized by asset class, geographic region, or industry. Their main feature is holding a large number of different assets to achieve maximum diversification. The advantages include reducing the impact of individual asset volatility on the overall portfolio, but the disadvantages are higher management and monitoring costs.
Case Studies
A typical example is the Vanguard Group's Total Market Index Fund, which invests in thousands of stocks covering almost all industries and markets. Another example is BlackRock's Global Bond Fund, which diversifies across multiple countries' bond markets to mitigate the risk of single market volatility.
Common Issues
Investors often misunderstand the diversification effect of granular portfolios, believing that holding a variety of assets can completely avoid risk. In reality, while diversification can reduce risk, it cannot eliminate market risk entirely. Additionally, managing a large number of assets may lead to higher management fees.
