FORTUNE -- At 3.07% of total market value, Apple (AAPL) is still the single largest component of the S&P 500. But for the past nine months -- for better or worse -- it's gone its own way.
See also: The S&P 500's P/E...
Chart: When Apple Inc. and the S&P 500 parted company
As the S&P 500 hits a record high, Apple is once again flirting with new lows
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