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Midday Update: Stocks Mixed as Wall Street Looks to Finish Third Quarter Strong

Stocks were mixed Friday.

Stocks were mixed as Wall Street readies to close out both the month and the quarter. The Dow Jones Industrial Average was close to zero, eking into the red around midday. The S&P 500 gained about 0.2%, while the Nasdaq surged to a record high with gains over half of a percent.

While stocks have clocked steady gains this month, it's on track to be the least volatile September on record. Average daily ranges for the S&P 500 were only about 0.4%. That's the smallest range since reliable data became available in 1970.

Amazon's (AMZN) - Get Amazon.com, Inc. Report Whole Foods Market said Thursday it suffered a credit card security breach at some taprooms, restaurants and other in-store venues. The company said it uses a different point-of-sale system for its roughly 450 U.S. grocery stores. Because of that, grocery customers likely weren't affected. Amazon transactions also weren't involved, the company said.

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Roku (ROKU) - Get Roku, Inc. Class A Report is set up for another solid day of gains on Friday in its second day as a public company. Shares increased 21%, adding to a 68% surge on Thursday. The streaming-device company had priced its initial public offering at $14 a share, the high end of an expected range of $12 to $14.

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