W.W. Grainger ( GWW), which operates a chain of outlets selling industrial supplies, has boosted margins and revenue in recent years.

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According to the ETF Finder at ETF Channel, GWW makes up 1.22% of the Industrial Select Sector SPDR Fund ETF ( AMEX: XLI )which is trading higher by about 0.6% on the day Tuesday.

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Among the largest underlying components of VOT, in trading today Fastenal Co. ( NASD: FAST) is off about 0.7%, W.W. Grainger Inc. ( NYSE: GWW) is down about 0.7%, and Ross Stores, Inc. ( NASD: ROST) is lower by about 2.9%.

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