Part 26 of 43 in How to Invest Your Money: Lessons from the World’s Greatest Investors, Adapted for the Indian Investor← Part 25Part 27 →
This chapter explains how position sizing, correlation, rebalancing, and liquidity affect portfolio risk. It helps Indian investors assess whether their holdings are truly diversified and reduce the chance of being forced to sell during volatility.
- Highly correlated holdings can fall together during sector downturns, recessions, or broad market declines.
- A common guideline is limiting one stock to 5–10% of the equity portfolio.
- Investors can set maximum sector limits and monitor overlap among mutual funds.
- Rebalancing helps enforce position limits over time.
- Liquidity matters because unexpected cash needs may require selling without large price impacts or tax consequences.
Even a portfolio of individually sound investments can be risky if the holdings are highly correlated. Many Indian investors discover this during sector downturns or broad market declines when seemingly different stocks fall together. A simple way to think about correlation is to ask: In a severe recession or financial stress scenario, which of my holdings would likely decline at the same time? If the answer is “most of them,” the portfolio may be less diversified than it appears.
Position sizing rules provide a mechanical defense. A common guideline for individual investors is to limit any single stock to 5–10% of the equity portfolio unless there is exceptional knowledge and conviction, and to limit any single sector to a predefined maximum. For mutual funds, monitor overlap so that five different “diversified” funds do not collectively create a concentrated bet. Rebalancing enforces these limits over time.
Liquidity is part of risk management. Ensure that a sufficient portion of the portfolio can be sold without large price impact or tax consequences if unexpected cash needs arise. Illiquid investments, unlisted shares, or real estate should be sized with this constraint in mind. The ability to hold through volatility depends partly on not being forced to sell.
Frequently asked questions
How can I tell if my portfolio is too concentrated?
Ask which holdings would likely decline together during a severe recession or financial stress scenario. If most would fall at the same time, the portfolio may be less diversified than it appears.
What percentage of my portfolio should one stock represent?
A common guideline for individual investors is to limit any single stock to 5–10% of the equity portfolio, unless there is exceptional knowledge and conviction.
How do mutual funds create concentration risk?
Five different diversified funds may collectively create a concentrated bet if they hold many of the same investments. Monitor overlap among funds.
Why is liquidity important in risk management?
A sufficient portion of the portfolio should be sellable without large price impact or tax consequences when unexpected cash needs arise. Illiquid investments, unlisted shares, and real estate should be sized with this constraint in mind.