Stocks making the biggest moves midday: Twitter, Zoom, Palo Alto Networks, Macy's and more

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Check out the companies making headlines in midday trading Tuesday.

Zoom Video — Zoom sank more than 14% after missing on revenue estimates for the previous quarter due to a strong dollar. The videoconferencing company also cut its forecast for the full year amid slowing revenue growth.

Twitter – Shares of the social media network fell 6% after a whistleblower at the company filed complaints with the Securities and Exchange Commission, Federal Trade Commission and Justice Department alleging «extreme, egregious deficiencies by Twitter» related to privacy, security and content moderation.

Palo Alto Networks – Shares of Palo Alto Networks jumped 11% after the company reported an earnings beat Monday, driven by strong billings up 44% in the quarter. The cybersecurity company also raised its quarterly and full-year guidance, boosted its buyback program and announced the approval of a 3-for-1 stock split.

Macy's - Shares of the department store rose more than 4% after the retailer reported a fiscal second-quarter profit and revenue that topped analysts' expectations. Macy's also teased that its digital marketplace, which was announced last year, is launching in the coming weeks. However, the company cut its full-year forecast, saying it anticipates deteriorating consumer spending on discretionary items such as apparel that will lead to heavy markdowns to move items off shelves.

Dick's Sporting Goods — Shares climbed 2% after the sporting goods retailer topped earnings and revenue estimates in its second-quarter results and also raised its full-year financial outlook.

Medtronic — Medtronic shares sank 3.4% despite a beat on revenue and earnings in the recent quarter. The medical devices maker said that revenue