SP 500 Index

If Friday's momentum is sustained throughout the trading session, U.S. stocks will record a six-day winning streak. But are all stocks participating in the rally? CNBC's Dominic Chu turned his attention to companies that are being left behind in the rally in a Friday segment. ...

Apple Inc. (NASDAQ: AAPL)'s valuation stands at more than $750 billion, which makes it the biggest component in the S&P 500 index. But what impact does the behemoth have on the index's movement? According to CNBC's Brian Sullivan, Apple's 24 percent year-to-date gain implies the stock...