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Utilities Sector · The Week in Review

Utilities Fund Trails the Field as Treasury Yields Rise

The Utilities Select Sector SPDR Fund lost ground this week as rising Treasury yields and rate hikes weighed on the sector.

EasyAlpha Research · Sep 18, 2026 · Sep 19, 8:00 AM EDTPlus

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XLU · Utilities

-3.1%this week

Open XLU as of Sep 19, 8:00 AM EDT

The Utilities sector posted a notable decline this week. The Utilities Select Sector SPDR Fund (XLU), an exchange-traded fund tracking the sector, closed -3.1% over the five sessions, lagging the broader S&P 500 move of -0.4% while 2 of the 11 sector funds rose this week. Downside pressure was heavy throughout the sector, where just 3.2% of member companies managed a gain. The retreat was led by Constellation Energy Corp (-10.5%), while The AES Corporation (+0.3%) was the best-performing member. The sector faced pressure as Treasury yields tested multiyear highs, which weighed on utility shares exposed to yield movements. Conditions grew more difficult after the Federal Reserve raised interest rates and indicated that stubborn inflation could require further tightening.

The weakness in utilities unfolded against a demanding macro environment for rate-sensitive assets. With rising oil prices and persistent inflation pushing benchmark Treasury yields toward multiyear highs, broader equity markets drifted lower. Long-term Treasury yields approached multiyear peaks during the week, creating headwinds across the sector as utilities reacted to shifting yield levels. Furthermore, central bank officials signaled that another rate hike could occur later in the year as inflation remained elevated.

Internal breadth figures show that the pullback was widespread rather than concentrated in a few names. With only 3.2% of the sector's S&P 500 components finishing in positive territory, nearly every constituent lost ground over the week. The equal-weighted version of the sector returned -2.8%, closely tracking the cap-weighted fund's return of -3.1%. That close relationship confirms that selling pressure was distributed across the entire industry rather than isolated to a few large holdings. The dispersion across the group was marked by Constellation Energy Corp (-10.5%) at the bottom and The AES Corporation (+0.3%) at the top, illustrating that even the best-performing stock in the sector barely finished in the green.

The weekly decline extends a difficult stretch over the past several months. The fund closed at -6.7% over the trailing month and -7.6% over the past three months. While the weekly move was notable relative to the fund's historical trading range, one week rarely alters what a sector fundamentally is. The sector's move reflects interest-rate sensitivity and broader macroeconomic pressures, rather than an operational shift across its member companies. The performance over the week was driven by broad interest-rate repricing across the equity market, leaving the fundamental characteristics of the sector unchanged.

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