Nvidia launches H200 as OpenAI raises $15 billion

Shares of AI infrastructure companies, including Oracle, Nvidia, and Broadcom, plummeted on April 28, 2026, following a leaked OpenAI revenue report. Despite this volatility, experts remain optimistic about certain stocks, advising investors to use a four-flag checklist to assess AI positions.

Hyperscalers like Alphabet, Amazon, and Microsoft are driving growth by investing heavily in AI infrastructure. In fact, 2026 capex is expected to reach $660 billion. AWS AI revenue has already surged past $15 billion, fueled by AI services and strategic partnerships.

Several companies are making significant moves in AI. OpenAI launched GPT-5.5-Cyber, a cybersecurity-focused AI model, in response to Anthropic's progress. Meta, however, faces challenges, including China's blockage of its deal to acquire AI firm Manus. Meanwhile, Samsung Electronics is investing in AI research and development.

New players are emerging in the AI space. Scout AI, founded in 2024, raised $100 million to train AI models for military use. Cathie Wood's ARK Invest also showed confidence in AI stocks by buying 162,306 shares of CoreWeave, a GPU-optimized cloud infrastructure company.

Key Takeaways

  • AI infrastructure stocks plummeted on April 28, 2026, after a leaked OpenAI revenue report.
  • Hyperscalers expect to invest up to $660 billion in 2026 capex, driving AI growth.
  • AWS AI revenue exceeds $15 billion, driven by AI services and strategic partnerships.
  • OpenAI launched GPT-5.5-Cyber, a cybersecurity-focused AI model.
  • China blocked Meta's deal to acquire AI firm Manus.
  • Scout AI raised $100 million to train AI models for military use.
  • Cathie Wood's ARK Invest bought 162,306 shares of CoreWeave.
  • Meta raised its capital spending outlook for 2026, citing increased AI investments.
  • Nvidia, Oracle, and Broadcom stocks fell despite potential in AI infrastructure.
  • Samsung Electronics is investing in AI research and development.

AI Capex Risk Hits Tech Stocks

AI infrastructure stocks plummeted on April 28, 2026, after a leaked OpenAI revenue report. Oracle, Nvidia, and Broadcom led the decline. Despite this, hyperscaler 2026 capex is guided up to $660 billion. Experts advise using a four-flag checklist to size AI positions: customer concentration, backlog conversion, capex versus cash flow, and end-customer growth.

3 AI Stocks to Watch After Selloff

Oracle, Nvidia, and Broadcom stocks fell on April 28 after a leaked OpenAI infrastructure stocks. The company offers AI infrastructure, custom silicon, and cloud services. Analysts see potential in ORCL, NVDA, and AVGO despite recent volatility.

Scout AI Trains Military Vehicles

Scout AI, founded in 2024, raised $100 million to train AI models for military use. The startup aims to operate autonomous vehicles in conflict zones.

China Blocks Meta's AI Firm Deal

China is blocking Meta's deal to acquire AI firm Manus. The deal was set to expand Meta's AI capabilities.

OpenAI Releases Cybersecurity Model

OpenAI launched GPT-5.5-Cyber, a cybersecurity-focused AI model, in response to Anthropic's recent progress. The model aims to enhance cybersecurity.

Hyperscalers Invest in AI Infrastructure

Hyperscalers like Alphabet, Amazon, and Microsoft reported strong AI revenue growth. They invested heavily in AI infrastructure, driving growth.

Samsung Invests in AI and Pension

Samsung Electronics approved investments in AI and a pension plan. The company will invest in AI research and development.

Cathie Wood Invests in CoreWeave

Cathie Wood's ARK Invest bought 162,306 shares of CoreWeave, a GPU-optimized cloud infrastructure company. The investment signals confidence in AI stocks.

AWS AI Revenue Surges

AWS AI revenue exceeds $15 billion, driven by AI services and strategic partnerships. The growth is fueled by AI adoption.

Meta Raises Capital Spending Outlook

Meta raised its capital spending outlook for 2026, citing increased AI investments. The move sparked concerns about profitability.

Sources

NOTE:

This news brief was generated using AI technology (including, but not limited to, Google Gemini API, Llama, Grok, and Mistral) from aggregated news articles, with minimal to no human editing/review. It is provided for informational purposes only and may contain inaccuracies or biases. This is not financial, investment, or professional advice. If you have any questions or concerns, please verify all information with the linked original articles in the Sources section below.

AI Capex Tech Stocks OpenAI Oracle Nvidia Broadcom Hyperscalers Capex Risk AI Infrastructure Customer Concentration Backlog Conversion Capex vs Cash Flow End-Customer Growth AI Stocks Scout AI Autonomous Vehicles Military Use China Meta Manus AI Firm Deal GPT-5.5-Cyber Cybersecurity Model Anthropic Alphabet Amazon Microsoft AI Revenue Growth AI Infrastructure Investment Samsung AI Research and Development Cathie Wood ARK Invest CoreWeave GPU-Optimized Cloud Infrastructure AWS AI Services Strategic Partnerships AI Adoption Meta Capital Spending Outlook AI Investments Profitability Concerns

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