The XLRE fell 0.61% (−0.27 pts) on the day in a broad selloff: 24 of 29 stocks fell, with AMT out front at −0.04 points.
Read the latest market-close note: A Flat Headline on the S&P 500 Masks a Split Between Goldman Sachs and Apple
AMERICAN TOWER CORP and WEYERHAEUSER CO moved almost identically (−1.58% vs −1.45%), yet AMT moved the XLRE 3.4× 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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