Beginner
What It Means
Instead of picking individual stocks based on hunches, factor investing builds portfolios around proven characteristics that have historically led to better returns. Think of factors as “ingredients” that explain why some stocks outperform.The Main Factors
Portfolio Example
Instead of picking individual stocks, you build a portfolio emphasizing companies that are:- Undervalued relative to fundamentals (value)
- Rising in price with positive momentum (momentum)
- Highly profitable with strong balance sheets (quality)
Why It Matters
Factor investing provides a middle ground: more systematic than stock picking, but with potential to beat the market unlike pure indexing. Decades of research support these factors across markets and time periods.Advanced
Academic Foundation
Factor investing emerged from academic research showing that the market (beta) alone doesn’t explain all returns:Why Factors May Work
Each factor has economic rationale for its premium:Historical Premiums
Long-term annualized premiums (US equities, approximate):Implementation Approaches
Factor Cyclicality
Factors don’t always work. Historical drawdowns:Factor diversification helps. When value struggles, momentum often works, and vice versa. Multi-factor approaches smooth returns.
Data Requirements
Limitations
- Crowding: As factors become popular, premiums may shrink
- Implementation Costs: Turnover, especially for momentum, erodes returns
- Factor Timing: Extremely difficult to time factor rotations
- Drawdowns: Long periods of underperformance test investor patience
- Data Mining: Some “factors” are statistical artifacts
Parallax Approach
Parallax combines multiple factors in an integrated framework:- Value, Quality, Momentum, Defensive factors
- Factor scores combined at stock level
- Risk management overlay
- Sector and position constraints
Related Terms
Alpha
What factors help generate
Beta
The original factor
Diversification
Factor diversification