Finding a cheap stock sounds sensible. Buying a highly profitable company sounds sensible too. And investing in stocks with strong recent performance can also make sense.
The problem is that these three ideas do not always point toward the same companies.
A deeply undervalued stock may be cheap because its business is deteriorating. A high-quality company may look financially excellent but trade at an uncomfortable valuation.
Meanwhile, a momentum winner may continue rising – but could also become expensive and vulnerable when market leadership changes.
That is why combining value, quality, and momentum factors in one portfolio can be more interesting than relying on a single investment style.
Factor investing systematically targets characteristics that have historically been associated with differences in risk and return. MSCI identifies value, quality, and momentum among the major equity factors used in systematic portfolio construction.
The goal is not to find a magical combination that always wins. It is to build a more balanced process where the weaknesses of one factor may be partially offset by the strengths of another.
Understand What Each Factor Is Actually Looking For
Before combining factors, it helps to understand what each one is trying to capture.
Value strategies generally favor securities that appear inexpensive relative to fundamentals such as earnings, book value, cash flow, or other measures.
The Fama-French research framework, for example, uses book-to-market characteristics when constructing its traditional value factor.
Quality focuses on financially stronger businesses. Depending on the methodology, that can include profitability, earnings stability, balance-sheet strength, growth, and disciplined capital allocation.
Research from AQR defines quality using characteristics including profitability, growth, safety, and payout, and documents historical risk-adjusted performance differences between higher-quality and lower-quality companies.
Momentum takes a very different approach. Instead of asking whether a company is cheap or financially strong, it looks at price trends and favors securities that have recently performed better than peers.
Each factor therefore sees the market through a different lens.
Why Combining the Three Can Improve Diversification
Factor diversification matters because investment styles can experience very long periods of underperformance.
Value might struggle when investors strongly prefer rapidly growing companies. Momentum can experience sharp reversals when market leadership suddenly changes. Quality may lag during speculative rallies when lower-quality companies rise quickly.
Combining them reduces dependence on one investment thesis.
One particularly useful relationship exists between value and momentum. Research by Asness, Moskowitz, and Pedersen found value and momentum premiums across multiple markets and asset classes and observed that the two strategies were negatively correlated with one another.
That matters because value often buys securities that have become unpopular, while momentum naturally favors securities already moving upward.
Quality adds another dimension.
A quality filter may help distinguish between a genuinely inexpensive company and a business that is cheap because its fundamentals are deteriorating.
This does not eliminate losses, but it creates more sources of potential return and better diversfication across investment styles.
Quality Can Help Reduce the Value-Trap Problem
One weakness of pure value investing is the infamous value trap.
Imagine two companies trading at similarly low valuation multiples.
Company A has strong margins, manageable debt, consistent cash generation, and a durable business model. Company B has declining revenue, growing debt, weak profitability, and an uncertain competitive position.
A simple valuation screen might rank both as attractive.
A quality overlay would probably treat them very differently.
This is one reason value and quality can complement each other. Instead of simply asking, “Which stocks are cheapest?” the portfolio can ask, “Which reasonably priced companies also have attractive fundamentals?”
Academic factor models also recognize profitability as an important characteristic. The Fama-French five-factor framework includes a profitability factor alongside traditional value and other exposures.
There is a trade-off, though.
Requiring extremely high quality may remove many traditional value opportunities. The goal should usually be balancing the two factors rather than allowing quality criteria to completely overpower the value signal.
Momentum Can Stop You From Buying Too Early
Value investors often enjoy buying falling stocks.
Sometimes that creates excellent opportunities.
Sometimes the stock keeps falling for a very good reason.
Momentum can provide a useful reality check.
Suppose a company trades at a 40% discount to its historical valuation, but earnings estimates are falling, investors continue selling shares, and the stock has badly underperformed its sector for months.
A pure value strategy may buy immediately.
A multi-factor strategy could require the company’s momentum to stabilise before taking a significant position.
This does not mean waiting until every stock starts rising sharply. It simply reduces the tendency to repeatedly buy securities whose fundamentals or market expectations are still deteriorating.
Momentum can also complement quality. A financially strong company with improving price momentum may suggest that other investors are increasingly recognising the same positive characteristics.
The challenge is avoiding excessive chasing. Strong price momentum does not mean a stock can rise forever.
Decide Between Separate Factor Sleeves and Integrated Scoring
There are two common ways to combine factors.
1. The Separate-Sleeve Approach
An investor could allocate one-third of the factor portfolio to value, one-third to quality, and one-third to momentum.
Each sleeve independently selects securities.
This method is easy to understand and makes factor exposure relatively transparent. If value performs badly while momentum performs well, you can clearly see what happened.
But separate sleeves can create duplication.
The same company might appear in several strategies, while another stock might qualify as attractive under one factor but look terrible under the other two.
2. The Integrated Approach
An integrated model gives each company scores for value, quality, and momentum and then combines those scores.
For example, a portfolio could give roughly equal importance to all three factors and select companies with strong overall rankings.
S&P Dow Jones Indices uses a combined quality, value, and momentum score in one of its multi-factor indexes, demonstrating how the three characteristics can be evaluated together rather than through independent portfolios.
MSCI similarly offers multiple-factor indexes designed to maintain exposure to several style factors within a single systematic framework.
Neither method is automatically superior. The choice depends on how transparent, concentrated, and integrated you want the portfolio to be.
Do Not Assume Equal Weights Mean Equal Risk
Giving value, quality, and momentum 33.3% each sounds perfectly balanced.
But equal capital allocation does not necessarily mean equal risk exposure.
Momentum may experience faster changes and higher turnover. Value can develop large sector tilts. Quality screens may become concentrated in particular types of profitable companies.
A more advanced portfolio can therefore examine factor volatility, correlation, sector exposure, and concentration before deciding how much weight each factor receives.
For example, an investor might begin with equal weights but limit individual sectors to prevent the value component from becoming heavily concentrated in financials or energy.
Likewise, position limits can prevent a stock that scores highly across all three factors from becoming disproportionately large.
Factor weighting should be systematic enough to prevent emotional decisions but flexible enough to avoid accidental concentration.
Watch for Factor Overlap Inside Individual Stocks
Multi-factor portfolios can create an interesting advantage: some companies qualify under more than one factor.
Imagine a profitable company trading at a reasonable valuation while its stock is also experiencing improving relative momentum.
That security may score well on value, quality, and momentum simultaneously.
This can be attractive because the investment thesis is supported by several independent characteristics.
However, overlap can also create concentration.
If several factors repeatedly select the same group of stocks, your portfolio may be less diversified than the labels suggest.
This is why professional multi-factor methodologies frequently include risk controls. MSCI describes its multi-factor indexes as targeting persistent factor exposures while controlling overall market risk.
Look beyond the factor names and examine the actual holdings, sectors, countries, and underlying exposures.
Control Turnover and Trading Costs
Momentum changes faster than most valuation or quality measures.
A company can remain profitable for years. Its valuation might remain attractive for months. Price momentum can reverse much more quickly.
That creates a portfolio-management problem.
Rebalancing momentum too slowly may leave the strategy holding companies whose trends have already reversed. Trading too frequently can increase transaction costs, spreads, taxes, and administrative complexity.
Value and quality signals also change, although usually at a different pace.
A practical multi-factor strategy therefore needs predefined rebalncing rules.
Quarterly or semi-annual reviews may provide a reasonable starting framework for many long-term strategies, but the appropriate frequency depends on the exact factor definitions and implementation method.
The important point is avoiding emotional trading.
If the rules change every time one factor underperforms, the portfolio stops being a systematic factor strategy.
Expect Every Factor to Disappoint Eventually
Perhaps the hardest part of factor investing is psychological.
A factor can have strong long-term historical evidence and still underperform for years.
When value performs badly, investors may decide value is permanently broken. When momentum suffers a reversal, they may abandon momentum. When speculative stocks outperform, quality can suddenly look boring.
This is precisely why combining factors can help.
The portfolio does not require every component to work simultaneously.
However, investors should avoid constantly shifting weights toward whichever factor performed best recently. That can produce the exact opposite of disciplined investing—buying factors after strong performance and abandoning them after weakness.
A more consistant approach establishes factor weights, acceptable ranges, and rebalancing rules in advance.
Factor investing works best as a process rather than a prediction.
Value, quality, and momentum approach stock selection from three different directions.
Value asks whether a company is attractively priced. Quality examines whether the underlying business is financially strong. Momentum looks at whether market trends are moving in the company’s favor.
Combining them can create a more balanced portfolio than relying heavily on one style, particularly because individual factors can experience extended periods of weakness.
The key is implementation. Decide whether to use separate factor sleeves or an integrated scoring model, monitor stock and sector overlap, control turnover, and maintain disciplined weighting rules.
Start by reviewing your current portfolio through all three lenses. You may discover that what looks diversified by number of holdings is actually dominated by one investment style—and that adding complementary factor exposure can make the overall strategy more robust.
