As the S&P 500 hits a record high, Apple is once again flirting with new lows.
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 is headed for a 3-year high. Not Apple’s.