ETF Central's Guide to Defensive Sector Investing

Defensive sector ETFs explained

We’ll start with the sector you likely recognize from the products in your bathroom and the food in your fridge: the Consumer Staples Select Sector SPDR Fund

This ETF holds 38 consumer staples names drawn from the S&P 500. The portfolio spans several familiar categories. You have big box retailers such as Walmart, Costco, and Target. You have beverage giants like Coca-Cola and PepsiCo. Household product leaders include Procter & Gamble and Colgate-Palmolive. Food producers such as Mondelez and Kraft Heinz round out the pantry. And then there is tobacco, represented by companies like Philip Morris and Altria.

Consumer staples are considered inelastic because demand for these goods does not fluctuate dramatically with economic conditions. People still need toothpaste, laundry detergent, groceries, and basic household items whether GDP is expanding or contracting. That makes the sector largely non-cyclical. The numbers reflect that. XLP has a five-year monthly beta of about 0.60, meaning it has historically moved only 60% as much as the broader market.

The primary risk I see today is valuation. On a trailing 12-month basis, the sector trades around 27 times earnings. Even defensive businesses can deliver disappointing returns if you overpay for them.

Next are the companies that keep your water running and your lights on, represented by the Utilities Select Sector SPDR Fund

This ETF holds 31 companies, with heavy exposure to electric utilities such as NextEra Energy, Southern Company, and Duke Energy. There are also multi-utilities, gas utilities, and water providers sprinkled throughout the portfolio.

Utilities are often referred to as “widows and orphans” stocks. The label comes from their historically steady earnings and dividends. Think about consumer behavior during a downturn. You might cancel streaming subscriptions or dine out less often. You are far less likely to stop paying your power bill. As a result, utilities tend to show lower market sensitivity. XLU’s five-year monthly beta sits around 0.78.

The risks here are different. Utilities are capital-intensive businesses. They borrow heavily to finance infrastructure, expand their rate base, and maintain transmission and distribution networks. That makes them sensitive to higher interest rates. There is also growing disaster risk. Many utilities operate in regions where hurricanes, storms, and wildfires are becoming more frequent.

Finally, we have the companies that fill prescriptions and manufacture the drugs and devices people rely on, represented by the Health Care Select Sector SPDR Fund

The U.S. healthcare system is complex and often controversial. That complexity, however, has historically translated into strong profit pools for pharmaceutical companies, medical device manufacturers, biotech firms, healthcare providers, life science tool companies, and insurers.

Healthcare demand is also relatively inelastic. While you may hear stories of individuals rationing medications, most people prioritize medical care as much as possible because it is essential to quality of life. Reflecting that resilience, XLV carries a five-year monthly beta of roughly 0.68.

The key risk in healthcare is regulation. Political scrutiny can quickly shift sentiment and valuations. Recent controversies surrounding billing practices and claim denials within major insurers such as UnitedHealth have shown how regulatory and reputational risk can weigh on the sector.

Defensive sector ETF investing in practice

Each of these three sectors shares a common thread: essential services with relatively stable demand. They will not eliminate equity risk, but they can dampen volatility and provide a more defensive posture while remaining fully invested in stocks.

Another important point is that while each of these ETFs individually exhibits lower volatility than the broader market, they are not perfectly correlated with one another. Consumer staples, utilities, and healthcare respond to different drivers.

When you combine them and rebalance periodically, you introduce the potential to harvest a modest rebalancing premium. In simple terms, you are systematically trimming relative winners and adding to laggards, which can improve risk-adjusted returns over time.

To see how this works in practice, I used ETF Central’s new portfolio analyzer tool to build an equally weighted portfolio of XLP, XLU, and XLV, with quarterly rebalancing.

The five-year backtest compares this defensive mix against the S&P 500. On a total return basis, the S&P 500 has clearly outperformed. That is not surprising. We have been in a bull market led by cyclical and growth-oriented sectors such as technology, communication services, and consumer discretionary, none of which are meaningfully represented in this defensive basket.

Where the defensive mix shines is on the risk side. Historical volatility was meaningfully lower. Downside volatility was reduced. Correlation with the S&P 500 was lower. Kurtosis, which measures the frequency and magnitude of extreme return events or “fat tails,” was also lower, suggesting fewer severe outliers. Value at risk was reduced across most measures as well.

Sector ETFs are not just tools for making aggressive macro bets. They can also be combined thoughtfully to shape the risk profile of an equity portfolio. Even for a relatively hands-off investor, an equally weighted, periodically rebalanced allocation to defensive sectors can serve as a simple way to dial down volatility while staying fully invested in stocks.

Please note that this article reflects the author’s personal views and does not represent the opinions of the publication or its affiliates. It is for informational purposes only and does not constitute investment advice. It is essential to seek guidance from a registered financial professional before making any investment decisions.