Value-Momentum Diversification
Combine cheap assets with improving trends to balance opposing return drivers
- Difficulty
- Moderate
- Time to result
- ~months to results
- Steps
- 5
- Confidence
- 98%
Value and momentum identify opportunities from opposite directions. Value favors assets trading at low multiples relative to fundamentals, while momentum favors assets whose prices have performed well over a recent period. Cheap assets are frequently cheap because they have been losing, so the two signals are often negatively correlated. Combining them creates a portfolio in which each factor can offset some of the other's difficult periods while preserving both factors' long-run return potential. Investors can require every holding to score reasonably on both characteristics or combine separate value and momentum sleeves. The essential mechanism is diversification across return drivers, supported by disciplined measurement, exposure controls, and patience through inevitable drawdowns.
Origin
Cliff Asness developed the central value-and-momentum combination in his doctoral research at the University of Chicago and later applied it at Goldman Sachs and AQR. Extracted from Masters in Business.
Core principles
- 01Buy assets at low multiples rather than relying on one valuation metric
- 02Favor assets with positive relative price momentum
- 03Combine factors that earn returns for different reasons
- 04Use negative correlation to reduce portfolio-level volatility
- 05Judge the process over full market cycles rather than short windows
How to run it
- 1
Build a broad value measure
Rank assets using several sensible price-to-fundamental ratios, such as price to earnings, sales, or book value. Combining measures reduces dependence on any single accounting definition.
Pro tip Compare economically similar companies so industry structure does not dominate the ranking.
Watch out A low multiple can reflect genuine deterioration rather than mispricing.
- 2
Measure recent momentum
Rank the same assets by their relative performance over a defined trailing period. Apply the lookback and rebalance schedule consistently.
Pro tip Use a systematic calculation rather than a narrative judgment about which assets feel strong.
Watch out Pure momentum can suffer severe losses during abrupt market reversals.
- 3
Combine the signals
Select assets that produce an attractive portfolio-level mix of value and momentum. This can be done through blended scores or separate factor sleeves.
Pro tip Allow an asset that is exceptional on one factor and neutral on another when that improves the total portfolio.
Watch out Demanding that every asset rank highly on both signals can eliminate useful diversification.
- 4
Neutralize unintended bets
Control market beta, industries, countries, and other exposures so the intended factors drive results. Long-short implementations should apply appropriate hedge ratios.
Pro tip Test whether performance survives realistic trading costs and exposure constraints.
Watch out A nominally balanced long-short portfolio may still contain substantial market risk.
- 5
Rebalance and endure
Refresh rankings on a predetermined schedule and assess performance over full cycles. Expect either factor to experience extended periods of underperformance.
Pro tip Set expectations with stakeholders before a drawdown begins.
Watch out Abandoning the strategy after a multi-year slump can lock in losses before the offsetting factor cycle arrives.
In the wild
A diversified equity portfolio ranks stocks on several valuation ratios and trailing performance. It overweights inexpensive companies whose prices have stabilized while maintaining a separate sleeve of strong momentum stocks that are not extremely expensive. When former market leaders reverse, the value sleeve cushions the momentum losses; when cheap companies continue deteriorating, momentum limits exposure to them.
→ The portfolio relies less on one factor regime and produces a smoother long-term return stream.
A long-short manager buys low-multiple and positively trending stocks while shorting expensive and negatively trending stocks. The manager then neutralizes market and industry exposure so that broad rallies or sector concentration do not overwhelm the factor signals.
→ Returns more directly reflect value and momentum selection rather than market direction.
Common mistakes
Treating either factor as consistent
Both factors can suffer for years even when their long-run evidence remains intact. Short evaluation windows create false conclusions about whether the method works.
Using only one valuation ratio
A single accounting measure can be distorted by industry structure or intangible investment. A broad measure is generally more robust.
Running pure momentum without tail controls
Momentum can reverse violently after market turning points, so it should not be treated as a complete portfolio by itself.
Is it for you?
Best for
It is best for systematic investors who can diversify broadly and tolerate multi-year factor drawdowns.
Not ideal for
It is not ideal for investors seeking guaranteed short-term consistency or concentrated stock tips.
From the transcript
“Both make money over any decent time horizon.”
“the cheap stocks are cheap because one of the reasons they're cheap is they've been losing.”
“a holy grail of quand finances to try to find two things that are an average make money that hedge each other, and value and…”
From the episode
Cliff Asness on Quant Value Investing