Q: Hi 5i Team,
What is a good heuristic to use for a diversified portfolio with respect to the percentage allocation for the largest equity holding? For example, the Berkshire Hathaway portfolio has a portfolio weighting of more than 41% invested in AAPL. This represents a significant overweighting of one stock in comparison to the weighting of AAPL in the S&P 500 Index and Nasdaq 100 Index, which hold 6.1% and 10.9% in AAPL, respectively.
If one has a very strong belief in the superior expected returns of a company or ETF, for example, AAPL or QQQ, what is the upper percentage allocation one should assign for your largest equity holding? Is it 10%, 15%, 20%, 25%, 30%, 35% or 40%? What rule of thumb is reasonable for a well-diversified portfolio.
Your comments on the above is much appreciated.
Thanks George
What is a good heuristic to use for a diversified portfolio with respect to the percentage allocation for the largest equity holding? For example, the Berkshire Hathaway portfolio has a portfolio weighting of more than 41% invested in AAPL. This represents a significant overweighting of one stock in comparison to the weighting of AAPL in the S&P 500 Index and Nasdaq 100 Index, which hold 6.1% and 10.9% in AAPL, respectively.
If one has a very strong belief in the superior expected returns of a company or ETF, for example, AAPL or QQQ, what is the upper percentage allocation one should assign for your largest equity holding? Is it 10%, 15%, 20%, 25%, 30%, 35% or 40%? What rule of thumb is reasonable for a well-diversified portfolio.
Your comments on the above is much appreciated.
Thanks George