With U.S. stock futures trading slightly higher this morning on Tuesday, some of the stocks that may grab investor focus today are as follows:

• Wall Street expects Lowe's Companies, Inc. (NYSE:LOW) to report quarterly earnings at $3.99 per share on revenue of $24.01 billion before the opening bell, according to data from Benzinga Pro. Lowe's shares fell 0.2% to $242.70 in after-hours trading.
• Palo Alto Networks, Inc. (NASDAQ:PANW) reported better-than-expected results for its fourth quarter and issued strong guidance. Palo Alto's board authorized an additional $500 million for share repurchases, bringing the company's remaining buyback authorization up to $1 billion. Palo Alto shares gained 1.9% to $350.00 in the after-hours trading session.
• Analysts expect Medtronic Plc. (NYSE:MDT) to post quarterly earnings at $1.20 per share on revenue of $7.89 billion. The company will release earnings before the markets open. Medtronic shares rose 0.4% to $85.17 in after-hours trading.

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• Fluent, Inc. (NASDAQ:FLNT) reported worse-than-expected second-quarter financial results on Monday. Fluent shares tumbled 16.3% to $2.51 in the after-hours trading session.
• Analysts expect Alcon Inc. (NYSE:ALC) to post quarterly earnings at 73 cents per share on revenue of $2.52 billion after the closing bell. Alcon shares rose 0.01% to $96.27 in after-hours trading.

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