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Portfolio construction

A concentrated portfolio may mean enhanced returns

August 16, 2023 - 3 min read

Exchange-traded funds’ (ETFs’) long association with index-tracking strategies that hold hundreds of names has led investors to view ETFs as synonymous with passive strategies. This is no longer the case.

Diversification, investing in a large and varied selection of securities, has always played a prominent role in portfolio construction. In our opinion, the theory that true diversification and risk reduction can be achieved only by holding a large number of individual securities is not necessarily true. Active, bottom-up portfolio strategies can enhance diversification benefits by moving toward more concentrated portfolios of high-conviction, deeply researched ideas. Such strategies are becoming increasingly available in the active ETF wrapper for clients seeking long-term, risk-adjusted outperformance.

 

The power of investing focus

A concentrated portfolio construction approach may empower experienced active investment managers to deliver above-average returns while ensuring effective risk management. By maintaining an investment philosophy that is discriminatory by definition, these active managers include only best-in-class securities on which their teams have conducted in-depth, fundamental analysis. As Warren Buffett has stated: “Diversification may preserve wealth, but concentration builds wealth.” This rings true for active managers that trust their rigorous stock selection process and deeply understand the businesses they own.

 

Strong returns can come from top investment ideas

In the course of constructing portfolios, active managers regularly review countless data points and investment themes such that they could potentially invest in hundreds of attractive stocks. However, those managers that pursue only their top ideas rely on deeper research to help focus their efforts (and resources) on only those stocks for which they hold the utmost conviction. This kind of concentrated investment style has the potential to lead to outperformance for investors. In fact, many portfolio managers' top 10 or 20 ideas greatly outperform the rest of their portfolio.1

 

Diversification and concentration are not mutually exclusive

Studies have shown that portfolio risk, defined by the standard deviation of returns, can be reduced significantly by holding only about 20 securities.2 Above this level, any additional portfolio names will immaterially reduce overall risk – even with 1,000 names. Key to this assumption: The 20 securities selected possess diverse factors that drive performance and are not overly correlated to one another – which is why using an experienced active manager behind these investment decisions is imperative.

 

Putting theory into practice

Two Natixis Investment Managers affiliate firms, Loomis Sayles and Vaughan Nelson Investment Management, use concentrated investment approaches allowing them to invest significant portions of capital in companies with the most promising prospects or those that are undervalued by the market.

The Natixis Vaughan Nelson Select ETF (VNSE) generally holds about 30 stocks in a portfolio that is constructed using factor analysis and strict consideration of long-term growth potential and risk management. They use factor analysis to help determine satisfactory portfolio diversification. Technology-aided factor analysis enhances appropriate diversification with more accuracy than simply owning a large and varied number of stocks. Furthermore, applying technological advancements may more accurately predict how individual stocks react to different market scenarios and facilitate an accurate estimation of long-term risk potential.

The Natixis Loomis Sayles Focused Growth ETF (LSGR) focuses on high-quality businesses with truly sustainable competitive advantages. Managed by Aziz V. Hamzaogullari, founder, chief investment officer, and portfolio manager of the Loomis Sayles Growth Equity Strategies (GES), he uses a long-term, private equity ownership approach and buys companies trading at a discount to intrinsic value to help manage portfolio risk.

 

Looking into the future

While achieving broad-based diversification by owning a large number of securities has long been accepted as general practice in the investment industry, investment managers like Vaughan Nelson and Loomis Sayles may better represent the future of portfolio construction, one in which factor analysis and deep research informs more rigorous "best idea" portfolio design – focused on risk management, long-term growth, and more calibrated diversification.

1 "Diversification versus Concentration ... and the Winner is?" Danny Yeung, Paolo Pellizzari, Ron Bird, Sazali Abidin.

2 Risk Reduction and Portfolio Size: An Analytical Solution by Edwin Elton and Martin Gruber (Journal of Business, 1977)
 

IMPORTANT DISCLOSURE

ETF General Risk: Exchange-Traded Funds (ETFs) trade like stocks, are subject to investment risk, and will fluctuate in market value. Unlike mutual funds, ETF shares are not individually redeemable directly with the Fund, and are bought and sold on the secondary market at market price, which may be higher or lower than the ETF's net asset value (NAV). Transactions in shares of ETFs will result in brokerage commissions, which will reduce returns. Active ETF: Unlike typical ETFs, there are no indexes that the Fund attempts to track or replicate. Thus, the ability of the Fund to achieve its objectives will depend on the effectiveness of the portfolio manager. There is no assurance that the investment process will consistently lead to successful investing. Equity Securities Risk: Equity securities are volatile and can decline significantly in response to broad market and economic conditions. Small- and Mid-Cap Stocks Risk: Investments in small and midsize companies can be more volatile than those of larger companies. Value Investing Risk: Value investing carries the risk that a security can continue to be undervalued by the market for long periods of time. Nondiversified Risk: Nondiversified funds invest a greater portion of assets in fewer securities and therefore may be more vulnerable to adverse changes in the market. Growth Stocks Risk: Growth stocks may be more sensitive to market conditions than other equities as their prices strongly reflect future expectations.

Before investing, carefully consider the Fund’s investment objectives, risks, charges, and expenses. Please visit im.natixis.com or call us at 800-225-5478 for a prospectus or a summary prospectus containing this and other information. Read it carefully before investing.

 

ALPS Distributors, Inc. (Member FINRA) is the distributor for Natixis ETFs. ALPS Distributors, Inc. is not affiliated with Natixis Investment Managers. Natixis Distribution, LLC (Member FINRA | SIPC) is a marketing agent.
 

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