An adviser adds many unrelated stocks across different industries to a portfolio. Which type of risk can this diversification reduce, and which type will remain?
- AIt eliminates both systematic and nonsystematic risk entirely
- BIt reduces nonsystematic (company/industry-specific) risk but leaves systematic (market) riskcorrect
- CIt reduces neither type of risk because both are market-wide
- DIt reduces systematic (market) risk but leaves nonsystematic risk unchanged
Why B is correct
Spreading money across many unrelated securities averages away company- and industry-specific (nonsystematic) risk, but it cannot remove systematic risk, which affects the entire market and is non-diversifiable.
