What Is XLU? State Street Utilities Select Sector SPDR ETF

XLU is the Utilities Select Sector SPDR ETF, launched by State Street in December 1998. It tracks the Utilities Select Sector Index, which holds the utilities companies within the S&P 500, electric, gas, water, and multi-utility providers, giving concentrated exposure to one defensive, income-oriented sector in a single ticker.

Large regulated and power utilities. Top holdings include NextEra Energy, Southern Company, Duke Energy, Constellation Energy, American Electric Power, Sempra, Dominion, Entergy, Vistra, and Xcel Energy. See the table above for current weights. It is concentrated, holding roughly 30 stocks, with the top few names carrying significant weight.

0.08% per year, or $8 annually on a $10,000 position. That is very low for a sector fund, typical of the State Street Select Sector SPDR lineup, and makes XLU a cost-efficient way to own the utilities sector.

Approximately 2.64% as of mid-2026, paid quarterly, notably higher than the broad S&P 500. Utilities are regulated, cash-generative businesses that return much of their earnings as dividends, which is a core reason income-focused investors hold XLU.

Utilities provide essential services (electricity, gas, water) with steady, regulated demand that holds up even in recessions, so their earnings and dividends are relatively stable. XLU tends to fall less than the broad market in downturns and is less volatile overall, which is why it is classified as a defensive sector holding.

Significantly. Utilities carry heavy debt for their capital-intensive infrastructure, so higher rates raise their borrowing costs. Their high dividends also compete with bond yields, so when rates rise, income investors may rotate to bonds, pressuring utility prices. XLU therefore often weakens when rates climb and strengthens when rates fall.

XLU offers steady income, lower volatility, and defensive characteristics, but it is a single-sector fund concentrated in a handful of large utilities and sensitive to interest rates, not a diversified core. Walnut is not an investment adviser; XLU is commonly used as an income or defensive tilt alongside a broad-market core rather than as a standalone portfolio.

XLU trades like any stock during US market hours through brokers such as Robinhood, Fidelity, Schwab, Public, and Vanguard, with fractional shares available at most. If you want to add a defensive income sleeve to a broad portfolio, you can connect your broker to Walnut to see how XLU fits with what you already hold.

It has become one. Rising electricity demand from AI data centers has drawn attention to power producers, and XLU holds names like Constellation Energy and Vistra that supply large-scale generation (including nuclear). XLU is a broad utilities fund rather than a pure data-center-power bet, but it captures part of that theme through its power-generation holdings.

Approximately $23.11 billion as of mid-2026, making it by far the largest and most-traded utilities ETF. Its size and liquidity make it the default vehicle for investors seeking sector-wide utilities exposure.

Both are US utilities sector funds. XLU (State Street) holds only the utilities within the S&P 500, roughly 30 large-cap names, at 0.08%. VPU (Vanguard Utilities) tracks a broader utilities index including some mid-caps, holding more stocks, at a similar low fee. XLU is more concentrated in mega-cap utilities; VPU is slightly broader. Performance is close.

Quarterly. XLU aggregates the dividends of its underlying utility holdings and distributes them to shareholders four times a year. Most brokers offer automatic dividend reinvestment (DRIP) at no cost, which can compound the fund's above-market yield over time.

The Utilities Select Sector Index, which includes companies classified in the utilities sector within the S&P 500: electric utilities, multi-utilities, independent power producers, gas utilities, and water utilities. The Select Sector SPDR funds slice the S&P 500 into its GICS sectors, and XLU is the utilities slice.

It is often used that way. XLU's above-market dividend yield, lower volatility, and defensive, essential-service business models appeal to retirees and income-focused investors. The main caveats are interest-rate sensitivity and single-sector concentration, so it is typically one income sleeve within a diversified portfolio rather than the whole allocation.

Put a few fields side by side: the expense ratio (fees compound over decades), the index or strategy it tracks, the top holdings and how much they overlap with what you already own, the dividend yield, and the AUM, liquidity, and bid-ask spread that affect trading costs. For index funds, tracking error (how closely it follows its index) and tax efficiency matter too. XLU's figures are above; the full method is in Walnut's guide on how to compare ETFs.