Stocks making the biggest moves after hours: Apple, Amazon, Rivian, Reddit & more

Check out the companies making headlines in extended trading. Amazon — The e-commerce giant's shares shot up more than 9% in extended trading after the firm reported better-than-expected revenue and cloud growth for the second quarter. Revenue in Amazon's cloud segment expanded 37% year over year during the quarter, surpassing Wall Street's expectations for 31% growth and marking the unit's fastest growth in 18 quarters. Apple — The tech giant saw shares fall more than 4% in volatile trading after hours as investors parsed through its earnings report. The firm reported stronger-than-expected revenue for the fiscal third quarter, driven by a 22% increase in iPhone sales. Coinbase — Shares of the crypto exchange slid more than 5% after posting its third straight quarterly loss. The ​company reported a loss of $359.5 ⁠million, or $1.36 ‌per share, while analysts had anticipated a loss of 17 cents a share. Revenue of $1.22 billion was shy of the $1.31 billion estimate. Rivian Automotive — The electric vehicle maker's shares rose nearly 2% after the firm reduced its 2026 spending plans and slightly narrowed its previously forecasted losses this year. It also reconfirmed a previously raised delivery target of 65,000 to 70,000 vehicles to customers. Reddit — The social media platform's shares sank over 7% in after-hours trading, underscoring Wall Street's concerns about the company's search-referral traffic from Google. CEO Steve Huffman said search referrals were "choppy" in the quarter. The company did report second-quarter earnings that beat on the top and the bottom lines, while issuing guidance that sailed past expectations. First Solar — Shares of First Solar rose more than 3% after the company reported second-quarter earnings that topped Wall Street expectations, even as revenue was roughly in line with estimates. The solar manufacturer earned $3.92 a share, beating the FactSet consensus estimate of $2.99. Revenue came in at $1.06 billion, matching views. — CNBC's Christina Cheddar Berk contributed reporting.