The XLF rose 7.80% (+3.96 pts) over the past six months in a broad advance: 56 of 76 stocks rose, with V out front at +0.90 points.
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VISA INC CLASS A SHARES and FRANKLIN TEMPLETON INC moved almost identically (+26.90% vs +29.70%), yet V moved the XLF 48.3× 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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