The XLK rose 20.54% (+33.87 pts) over three years, and more than all of that gain came from just three stocks: NVDA, AAPL, AVGO.
Read the latest market-close note: Goldman and Microsoft Push the Dow to a Large Gain While Telecoms Sink Communication Services
MICROSOFT CORP and ZEBRA TECHNOLOGIES CORP CL A moved almost identically (+71.36% vs +67.65%), yet MSFT moved the XLK 48.8× 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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