The XLP rose 3.58% (+2.89 pts) on the week in a broad advance: 30 of 34 stocks rose, with WMT out front at +0.61 points.
Read the latest market-close note: Goldman and Microsoft Push the Dow to a Large Gain While Telecoms Sink Communication Services
COSTCO WHOLESALE CORP and MCCORMICK + CO NON VTG SHRS moved almost identically (+2.85% vs +2.84%), yet COST moved the XLP 16.9× 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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