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What are the best AI stocks to watch?

AlphaOS investment intelligence · Research and education only — not investment advice · Updated Sep 27, 2026

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The most closely watched AI stocks span the full technology stack, from semiconductor hardware to cloud platforms to software applications. NVIDIA (NVDA) dominates AI chip supply with roughly 80% data center GPU market share and reported $22.1 billion in data center revenue in Q3 FY2024 alone. Microsoft (MSFT) has deployed over $13 billion into OpenAI and is monetizing AI through Azure and Copilot products. Alphabet (GOOGL), Meta Platforms (META), Amazon (AMZN), and AMD are also central to the AI investment thesis. Pure-play software names like Palantir (PLTR) and emerging infrastructure players like Arista Networks (ANET) round out the landscape for investors tracking AI's expansion across enterprise and cloud.

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Key Takeaways

  • NVIDIA is the single highest-revenue-impact AI stock, with data center segment revenue growing over 400% year-over-year in FY2024
  • Microsoft's Azure AI services and Copilot integration make it the dominant enterprise AI software platform, with AI contributing meaningfully to Azure's 29% growth rate
  • Meta Platforms has emerged as a dark-horse AI leader, deploying Llama open-source models and AI-driven ad targeting that boosted 2023 revenue 16% to $134.9 billion
  • AMD is the primary challenger to NVIDIA in AI GPUs, with its MI300X chips gaining traction at hyperscalers and a $400 billion AI chip TAM projection through 2027
  • Palantir (PLTR) is the leading pure-play AI software company, with its AIP platform driving U.S. commercial revenue growth of 55% year-over-year in Q3 2024
  • Amazon Web Services controls approximately 31% of cloud infrastructure market share and is investing heavily in proprietary AI chips (Trainium, Inferentia) to reduce NVIDIA dependency
  • Arista Networks (ANET) and Broadcom (AVGO) are critical AI infrastructure beneficiaries, supplying networking and custom silicon to hyperscaler AI clusters

Evidence & Analysis

  • NVIDIA data center revenue reached $22.1 billion in Q3 FY2024, up 279% year-over-year, making it the largest revenue segment by a wide margin
  • Global AI infrastructure spending is projected to exceed $200 billion annually by 2025, per IDC forecasts
  • Microsoft Azure reported 29% revenue growth in Q1 FY2025, with AI services cited as a key accelerant contributing approximately 12 percentage points of that growth
  • Broadcom reported $12.2 billion in AI-related revenue guidance for FY2024, driven by custom AI accelerator chip demand from hyperscaler clients
  • Palantir was added to the S&P 500 in September 2024 and reported its fifth consecutive quarter of GAAP profitability alongside accelerating AIP adoption
  • Meta's capital expenditure guidance for 2024 was raised to $37–40 billion, primarily driven by AI infrastructure investment

Key Companies

NVDA

NVIDIA Corporation

Primary AI hardware beneficiary — ~80% data center GPU share, $22.1B data center revenue Q3 FY2024

MSFT

Microsoft Corporation

Leading enterprise AI platform — OpenAI partnership, Azure AI services, Copilot monetization

GOOGL

Alphabet Inc.

AI-native infrastructure and model developer — Gemini models, TPU chips, Google Cloud AI services

AMD

Advanced Micro Devices

Primary NVIDIA challenger in AI GPUs — MI300X gaining hyperscaler adoption

PLTR

Palantir Technologies

Leading pure-play AI software company — AIP platform, 55% U.S. commercial revenue growth Q3 2024

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