It is common practice for performance evaluation services to compare the returns on a common stock portfolio to a distribution of returns obtained from a large sample of other common stock portfolios What are potential problems with this sort of analysis ...

It is quite possible that the other common stock portfolios are inappropr ...

It is common practice for performance evaluation services to compare the returns on a common stock portfolio

Question:

It is common practice for performance evaluation services to compare the returns on a to a of returns obtained from a large sample of other portfolios. What are potential problems with this sort of analysis?
Common Stock
Common stock is an equity component that represents the worth of stock owned by the shareholders of the company. The common stock represents the par value of the shares outstanding at a balance sheet date. Public companies can trade their stocks on... Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most... Portfolio
A portfolio is a grouping of financial assets such as stocks, bonds, commodities, currencies and cash equivalents, as well as their fund counterparts, including mutual, exchange-traded and closed funds. A portfolio can also consist of non-publicly...