The XLF rose 6.45% (+3.53 pts) so far this year in a broad advance: 56 of 76 stocks rose, with JPM out front at +0.78 points.
Read the latest market-close note: Nvidia and Goldman Sachs Lead a Narrow Advance as Energy and Staples Slide
JPMORGAN CHASE + CO and EVEREST GROUP LTD moved almost identically (+11.76% vs +11.98%), yet JPM moved the XLF 77.5× 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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