The correct answer is B - "The small capitalization minus big capitalization risk factor" (SMB).
Fama-French Three-Factor Model Components:
- Market Risk Factor - Excess return of the market portfolio over the risk-free rate
- Size Factor (SMB) - Small Minus Big: Returns of small-cap stocks minus returns of large-cap stocks
- Value Factor (HML) - High Minus Low: Returns of high book-to-market stocks minus returns of low book-to-market stocks
Why other options are incorrect:
- A: Investment Growth is not part of the original three-factor model (though it appears in later five-factor models)
- C: Winners minus losers is the momentum factor (WML), which was added later in the Carhart four-factor model
- D: Inflation is not a specific factor in the Fama-French model
The Fama-French three-factor model extends the CAPM by adding size and value factors to better explain stock returns.
