The XLP rose 0.39% (+0.33 pts) on the month, but 17 of 34 members went the other way. WMT and COST carried the tape higher, contributing more than the entire move.
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PEPSICO INC and HORMEL FOODS CORP moved almost identically (−7.82% vs −7.87%), yet PEP moved the XLP 10.3× as much. In a cap-weighted index, the bigger company's weight turns the same percentage move into far more points.
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