S&P 500 Gains 18 Points: Carnival Takes a Bath, Kraft Heinz Says Hold the Cheese, Apple Goes Even Bigger on Services

A mixed day for stocks didn't stop the S&P 500 Index (SNPINDEX: ^GSPC) from moving 18 points higher on Sept. 15, with the massive tech sector leading the way. The Technology Select Sector SPDR (NYSEMKT: XLK), which tracks the tech stocks in the S&P 500, was up more than 1% today.

The tech sector makes up almost 30% of the index's total value, giving it an outsize impact on the S&P 500's daily movements, particularly the tech behemoths at the top of the market cap stack. For instance, one of today's best-performing tech stocks was Adobe Systems (NASDAQ: ADBE), with shares gaining 2.4% after the company reported its third fiscal quarter results. 

Image source: Getty Images.

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Source Fool.com