Magnificent 7 stocks news, Oct 17, 2026

Amazon's stock fell 4.74% for the week, well below its 52-week high of $287.20. Reports emerged that Amazon is in talks to acquire AI startup Decart for roughly $7 billion, which would rank among its largest-ever deals. MIT filed a patent lawsuit against AWS in Boston federal court over data-security technology, while Wells Fargo and Cantor Fitzgerald trimmed price targets ahead of Q3. Amazon launched Bee AI wearable devices at $74.99 and $99.99 and confirmed its Q3 earnings call for Oct 29. Free cash flow swung to a $7.6 billion outflow as 2026 capex guided to approximately $220 billion.

Alphabet's stock declined 3.15% for the week, sitting well below its 52-week high of $408.61. Google launched Gemini 4 Argon globally at roughly 50% below rival pricing, targeting coding and enterprise workloads. A federal securities class action alleging Alphabet misled investors about Gemini 3.5 Pro delays set lead-plaintiff deadlines of Nov 30 and Dec 1. Alphabet announced a $4.3 billion, 20-year nuclear power purchase agreement with Constellation Energy for 890 MW of new capacity. Consensus EPS revisions drifted lower heading into Q3 earnings scheduled for Oct 28.

Meta's stock slipped 1.30% for the week after an initial surge on AI model launches. Meta released the Muse Wonder and Muse Wonder Full models on Oct 12, prompting price-target upgrades from Truist to $1,000, Guggenheim to $850, and BNP Paribas to $885. The company then launched Muse Spark Open, an 816-billion-parameter open-weight model developed in partnership with Apple to run on M5 Mac Studios. Seven Senate Democrats wrote to Zuckerberg questioning Meta's federal R&D tax credit claims, while a Brazilian electoral court order addressed content restrictions ahead of the Oct 25 runoff. Bank of America expects Q3 revenue of $63.8 billion but lowered EPS to $3.79 due to an anticipated $10 billion legal accrual ahead of Oct 21 earnings.

Microsoft's stock eased 1.13% for the week after hitting a record close of $543.45 on Oct 13. Microsoft unveiled its Maia 300 AI chip at the OCP Global Summit, claiming 40% more tokens per megawatt than leading GPU systems with production starting in 2027. The company was suspended from the PERM green-card program amid a visa-fraud investigation, with Brad Smith calling the allegations completely off base. Barclays, Deutsche Bank and BNP Paribas raised price targets to $600–$604 ahead of fiscal Q1 earnings on Oct 28. The UK's CMA proposed designating Microsoft with strategic market status, with a final decision set for February.

NVIDIA's stock fell 6.61% for the week, its steepest decline among the holdings. OpenAI disclosed a $50 billion revenue run rate about $18 billion below expectations, triggering an AI selloff that cut Nvidia's market value by roughly $200 billion. Competitive pressure mounted as Microsoft unveiled its Maia 300 chip and IDC data showed Nvidia's China AI chip share falling to 34% while Huawei reached 28%. RTX Spark laptops launched at $2,599 with large crowds but few purchases, while CoreWeave plunged 12% Friday as its bond yields exceeded 15%. No news summary is available for Oct 15 due to a pipeline error.

Tesla's stock dropped 7.31% for the week, the steepest decline in the portfolio. Tesla unveiled the next-gen Roadster on Oct 15, but the stock reversed from a premarket spike of 5.4% to close down 2.13% on Oct 16 as attention shifted to Q3 earnings. NHTSA opened a defect petition review alleging Tesla's Model Y and Cybercab robotaxis speed in active school zones, covering about 1,000 vehicles. Barclays said a Tesla-SpaceX merger could come before the Dec 6 annual meeting, while prediction-market odds of a deal rose to about 56%. Q3 earnings are scheduled for 2026-10-21.