Investment Insight
Long-Term Conviction in a Short-Term World

Investment Insight

Long-Term Conviction in a Short-Term World


A manager’s conviction in the thesis underlying each portfolio company is key to long-term outperformance because conviction enables concentrating capital in big ideas. Additionally, conviction reduces the possibility of being shaken out of undervalued ideas based on short-term noise. A helpful tool to measure conviction is active share, which was developed in academia to quantify differentiation from the benchmark through stock selection.

Active share was developed in 2006 as a simplistic measure of stock selection, calculated as the size of positions that differ from the benchmark as a percentage of the total portfolio.1 Active share was conceived as a complement to tracking error, a measure of systematic risk that measures the volatility of a portfolio not explained by movements in its benchmark.2

Academic analysis of portfolio data from 1980 to 2009 found that managers have become less active over time,3 in part due to the rise of passive index investing. Average active share declined and the proportion of portfolios with high active share above 80% halved since 1980.

In contrast, the authors found that the active share of individual portfolios was persistent over time. Moreover, portfolios with the highest active share outperformed their benchmarks annually by an average of 1.13% net of fees. Their analysis concludes, “Funds with the highest active share outperform their benchmarks, while funds with the lowest active share underperform.”4

Since Cremers and Petajisto focused on U.S. equity portfolios, we recreated the academic study for global and international growth equity portfolios to see if the relationship between high active share and outperformance holds true for managers accessing a broader universe. Consistent with the academic study, we have found that both global and international growth equity portfolios with high active share have outperformed.

For both global and international portfolios, high active share is a key driver of performance

Source: Morgan Stanley Investment Management, Morningstar. Data as of September 30, 2017.


Global Opportunity Team portfolios

The MSIF Global Opportunity Portfolio, MSIF International Opportunity Portfolio and MSIF International Advantage Portfolio are each constructed with active share over 90% different from their respective benchmarks5 as of September 30, 2017.

To outperform across equity market cycles, investors must possess long-term conviction despite the short-term myopic focus of participants in the equity markets. Such conviction can only be built upon a foundation of core values.

Managing Director
Executive Director

1 Cremers, Martijn and Petajisto, Antti. “How Active is Your Fund Manager? A New Measure That Predicts Performance,” Yale ICF Working Paper No. 06-14 (2006). Available at SSRN. Past performance is no guarantee of future results. A portfolio with a high degree of active share does not assure relative outperformance.

2 Tracking error is the standard deviation of the difference between the portfolio and the benchmark returns.

3 Cremers and Petajisto, 18.

4 Ibid, 28.

5 The benchmark for MSIF Global Opportunity Portfolio is the MSCI All Country World Index. The benchmark for the MSIF International Opportunity Portfolio and the MSIF International Advantage Portfolio is the MSCI All Country World ex USA Index.


The views and opinions are those of the author as of the date of publication and are subject to change at any time due to market or economic conditions and may not necessarily come to pass. The views expressed do not reflect the opinions of all investment personnel at Morgan Stanley Investment Management (MSIM) or the views of the firm as a whole, and may not be reflected in all the strategies and products that the Firm offers.

This material is a general communication which is not impartial and all information provided is for informational and educational purposes only and should not be deemed as a recommendation. The information herein does not contend to address the financial objectives, situation or specific needs of any individual investor.

Any charts and graphs provided are for illustrative purposes only. Any performance quoted represents past performance. Past performance does not guarantee future results. All investments involve risks, including the possible loss of principal.

Prior to making any investment decision, investors should carefully review the strategy's / product's relevant offering document. For complete content and important disclosures, refer to the pdf above.

It is important that users read the Terms of Use before proceeding as it explains certain legal and regulatory restrictions applicable to the dissemination of information pertaining to Morgan Stanley Investment Management's investment products.

The services described on this website may not be available in all jurisdictions or to all persons. For further details, please see our Terms of Use.

Not FDIC Insured—Offer No Bank Guarantee—May Lose Value
Not Insured By Any Federal Government Agency—Not A Deposit

Privacy & Cookies    •    Terms of Use

©  Morgan Stanley. All rights reserved.

Morgan Stanley Distribution, Inc. Member FINRA/SIPC.