Shares of power producers fell as traders rotated into cyclical sectors.
An increase in Treasury yields also weighed on investor demand for the dividend-oriented stock-market sectors.
The utilities sector led the Standard & Poor's 500 for much of the last 18 months, when fears that a trade war would cause a global recession weighed on cyclical stocks and Treasury yields.
Utilities have fallen out of favor in recent weeks as those fears subside and Treasury yields creep higher.
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