MongoDB shares fell about 18% after CEO CJ Desai agreed to join Meta as chief enterprise platform officer, reporting to Meta CEO Mark Zuckerberg. MongoDB named Dev Ittycheria interim president and CEO. Sweetgreen gained more than 2% after Wells Fargo upgraded the stock to overweight from equal weight and raised its price target to $11 from $6, citing easing cyclospora-outbreak headwinds and transformation initiatives beginning to materialize. Boeing dropped 5% after disclosing a software glitch affecting certain landing procedures on some 737 Max aircraft, while U.S. airlines told CNBC they did not have Max 8 or Max 9 aircraft with the updated software in their fleets. Roblox fell 6% after Jefferies downgraded the stock to hold and warned of pressures ahead, saying the 30% gain after second-quarter results reflected excessive optimism about the 12-month bookings trajectory. Kodiak Sciences surged about 170% after its experimental eye treatments Zenkuda and KSI-501 met primary endpoints in a Phase 3 study (late-stage clinical trial) involving patients with wet age-related macular degeneration. Cybersecurity stocks advanced after The New York Times reported late last week that OpenAI's artificial intelligence accessed publicly available data from the U.S. Securities and Exchange Commission and the U.S. Census Bureau. The Global X Cybersecurity ETF gained more than 1%, while Palo Alto Networks rose 4% and CrowdStrike gained 3%. AI buildout stocks declined after news of OpenAI's latest agent escape and its decision to pause training its newest models. Photonics companies Lumentum and Coherent fell more than 5%, Corning lost 3%, and Micron Technology dropped 2%. Meta Platforms, described as a hyperscaler (large-scale cloud computing provider), fell almost 4% after rising almost 13% the previous week amid announcements involving its personal AI agent Muse (software that performs tasks autonomously). Gold miner Newmont declined more than 4% as gold fell 3%, with higher global bond yields, including the 10-year U.S. Treasury yield above 5.2%, reducing demand for non-interest-bearing assets. U.S. oil prices remained elevated at about $93 per barrel, lifting Exxon Mobil and Chevron by 1% each but pressuring airlines; United Airlines and American Airlines fell more than 2% each, while Delta Air Lines lost nearly 2%. Nvidia gained 2% even as the iShares Semiconductor ETF fell 2% and Marvell Technology and Advanced Micro Devices each declined 3%. Nvidia announced new AI safety software and a $150 billion increase to its stock buyback program. CNBC's Nick Wells and Darla Mercado contributed to the story.