Momentum Investing Research

Revaluation Alpha: Why Past Factor Returns May Be Misleading

Past returns often include non-repeatable revaluation alpha. Since structural alpha is the only component likely to persist, it’s essential for investors to distinguish this from one-off valuation windfalls before placing trust—or capital—in any factor or fund.

Do indexes time the market?

This paper shows there is a durable, stock-specific momentum component tied to how prices react to firm news around earnings dates. The result is a cleaner, lower-risk way to capture momentum without leaning so heavily on broad factor moves.

How Many Stocks Should Be In Your Portfolio? A Practical Guide to Portfolio Construction

Diversification is the only free lunch in investing. If you’ve spent even a day exploring the world of finance, you’ve likely encountered this common truism. But chances are, you’ve also heard stories of someone turning a small stake into millions by going all-in on just one or two stocks. That contrast raises a natural question for many investors: how many stocks should I actually own in my portfolio? Too many stocks, and you might be leaving opportunities on the table. Too few and you risk losing your shirt! So how do we strike a balance?

Should Investors Combine or Separate Their Factor Exposures?

If you’re a factor investor, there will come a time where you will have to choose between mom and dad: Should you combine or separate your factor exposures? And make no mistake: You will have to make a decision! While there’s no right answer, the way you structure your portfolio can have significant implications for returns, costs, and even your own behavior as an investor. Let’s walk through the logic behind both approaches.

Enhancing Momentum Strategies

Momentum investing remains a viable strategy. However, the way you construct and manage your momentum portfolio matters greatly.

Enhancing Industry Momentum Strategies: Finding Hidden Neighbors

The main benefit of constructing industry momentum portfolios based on standard ICS is that it is straightforward and reproducible. However, that benefit may come at the cost of accuracy and oversimplification of complex industry relationships between companies.

Can smart rebalancing improve factor portfolios?

This paper provides new evidence on the efficacy of prioritizing transactions so as to focus portfolio turnover on the trades that offer the strongest signals and hence the highest potential performance impact.

When Shorts Don’t Short

Low short positions come from positive public news, while negative news can drive average short or extremely high short positions

Momentum Everywhere, Even Cross-Country Factor Momentum

There is strong empirical evidence demonstrating that momentum (both cross-sectional and time-series) provides information on the cross-section of returns of many risk assets and has generated alpha relative to existing asset pricing models.

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