Environmental Performance Drivers



The Impact of Sector Performance on Environmental Portfolios

One important element of environmental investing is understanding the impact that different market conditions can have on the return of an environmentally-focused portfolio relative to the returns on other index-based portfolios.

Environmentally-focused portfolios reduce or eliminate exposure to certain types of energy-intensive companies (oil companies, utilities, etc.). By definition, that exposure must be replaced by larger allocations to other sectors of the economy that leave a lower carbon footprint. Depending on the portfolio manager’s strategy, these might include technology, financial services, and health care, among others. It follows that return differences among industries can at times have a material impact on the relative performance of environmental mandates.

Energy Underperformance in the First Quarter of 2020

This dynamic is always at play to some extent, and it was certainly apparent in the first quarter of 2020. While the coronavirus pandemic had a substantial negative impact on every major sector of the U.S. stock market, the effect was felt much more acutely in some. The quarterly returns of Vanguard’s single-sector exchange-traded funds (ETFs) illustrate this point. Each of these ETFs is designed to track the performance of a particular sector. Vanguard offers a liquid, low-cost ETF for each of the 11 sectors that comprise the S&P 500 index. This makes the series a good proxy for the return an investor could have achieved by allocating capital to a given sector.

The overall S&P 500 index, as measured by Vanguard’s S&P 500 ETF (VOO), returned -19.6% in the first quarter of 2020. Of the 11 primary sectors that make up the S&P 500, five performed better than the overall index and six performed worse. As one might expect in light of the extreme change in economic outlook due to the pandemic, the sectors that fared best were those that are generally less sensitive to a downturn in consumer spending (Exhibit 1).


Exhibit 1 - Sector ETF Performance - First Quarter 2020

Source:Vanguard


Especially notable was the extremely poor performance of the Energy sector. With the economy essentially shut down and most people spending their days at home, the demand for oil cratered at a time when oil supply was already high. As a result, stock prices of many companies in the sector plummeted, and the Vanguard Energy ETF (VDE) lost more than half of its value in just three months.

On the other hand, Utilities, which are also generally under-represented in environmental mandates due to their high carbon emissions, performed better than average (-14.1%), as measured by the Vanguard Utilities ETF (VPU). The relatively stable demand for power and the sector’s reliable dividend yield help to make Utilities much less sensitive to economic downturns.

For most portfolios with an environmental tilt, the lower allocation to Energy likely resulted in a noticeable positive performance effect relative to broad market portfolios. In fact, given the large degree of underperformance in Energy, allocating those dollars to any combination of other sectors would have boosted returns. As an example, the Vanguard ESG U.S. Stock Index ETF (ESGV), which had less than 0.1% allocated to Energy at quarter-end, outperformed Vanguard’s Total Stock Market ETF (VTI) by 2% in the first quarter and outperformed the S&P 500 by 0.8%.

Certainly, market dynamics will continue to shift, and different sectors will lead the market at different times. It is worth remembering this when comparing the performance of an environmentally-focused portfolio to broader benchmarks.

Longer-Term Performance of the Energy Sector Lags

It is also worth noting, however, that the struggles of the Energy sector are not limited to the first quarter of 2020. Over the five-year period ending December 31, 2019, the Vanguard Energy ETF was the only one of Vanguard’s sector offerings to generate a negative annualized return (Exhibit 2). In fact, it trailed the next worst performer (Communications) by a whopping 8.2% annually over that period and trailed the overall S&P return by almost 15% per year. The Utility ETF, by contrast, generated a solid 10.4% annualized return, ranking fifth out of the eleven sectors.


Exhibit 2 - Annualized Sector ETF Performance - Five Years Ending 12/31/19

Source:Vanguard


It is probably too early to conclude that we have seen the demise of traditional Energy companies as return generators in broader investment portfolios. However, given the pressures being applied by alternative energy solutions and the global drive to lower emissions, it is also at least as difficult for us to envision a long-term period of dominance for these companies in the future.

At One Day In July, our approach to constructing environmentally-focused portfolios considers a variety of factors. Among the most important is the desire to reduce exposure to companies with large carbon footprints and to companies with substantial fossil fuel reserves. We accept the fact that this will cause some performance deviations from common market benchmarks, and that those deviations may be positive or negative in the short term. However, we also believe that the net long-term impact of these deviations may be positive in light of the growing momentum around climate action.



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