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SoftBank (9984.T) stock analysis, October 2, 2025: SoftBank tests ¥20,000 after Stargate deal, but five-day dip lingers

Published October 2, 2025 · updated 2025-12-29 · 9984.T chart, levels and live analysis

Key Updates

SoftBank Group is showing a strong rebound, up 4.37% to ¥19,110 since the last report. The catalyst was the confirmation of its participation in the $500 billion Stargate project with OpenAI and Oracle, which bolsters SoftBank’s position in AI infrastructure. The stock maintains an impressive year-to-date gain of +108.06%, confirming its status as a top beneficiary of the AI revolution.

Current Trend

SoftBank shares are in a steady uptrend, up +155.99% over the past six months. Despite short-term volatility (down -2.40% over five days), the monthly move remains strong (+24.25%). The current level of ¥19,110 sits near historic highs, indicating continued investor re-rating in light of AI opportunities.

Investment Thesis

The thesis hinges on SoftBank’s transformation into a key AI-ecosystem player through strategic partnerships and investments. Participation in the $500 billion Stargate project to build 10 GW of data-center capacity offers an unprecedented chance to monetize the AI trend. The company leverages its tech-investment expertise to position itself at the center of the AI boom.

Thesis Status

The thesis is reinforced by a clearer role for SoftBank in Stargate. The partnership with OpenAI and Oracle on the largest AI project ever validates the company’s strategic vision and creates a clear path to monetize AI investments. The stock’s valuation now reflects growing market recognition of SoftBank’s transformational potential in AI.

Key Drivers

The primary driver is SoftBank’s participation in the $500 billion Stargate project with OpenAI and Oracle to build 10 GW of AI infrastructure. Additional support comes from OpenAI’s expanding partnerships with South Korean tech giants, strengthening the project’s ecosystem. The involvement of Samsung and SK Hynix for memory-chip supply underscores the scale and seriousness of the initiative.

Technical Picture

SoftBank shares show strong technical momentum, breaking above ¥19,000. Today’s rise of 4.77% confirms the continuation of the uptrend after a brief consolidation. Trading volume remains elevated, indicating sustained institutional interest. Near-term resistance is around ¥20,000, while support has formed near ¥18,000.

Bull Case

  • Participation in the $500 billion Stargate project creates unprecedented AI monetization opportunities – source
  • Strategic partnership with OpenAI and Oracle provides access to cutting-edge AI technology and markets – source
  • Building 10 GW of data-center capacity opens long-term revenue streams from AI infrastructure – source
  • Securing top chip suppliers Samsung and SK Hynix strengthens the project’s technology base – source
  • Exceptional year-to-date performance of +108.06% shows investor confidence in the AI strategy

Bear Case

  • High short-term volatility (down -2.40% over five days) poses risks for traders
  • Reliance on the success of Stargate concentrates operational risk in a single initiative – source
  • Current valuations may not reflect realistic timelines for AI monetization
  • Competition in AI infrastructure could limit SoftBank’s market share
  • Macroeconomic headwinds could affect financing for large-scale tech projects
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