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SoftBank (9984.T) stock analysis, October 15, 2025: SoftBank tests ¥21,350 after a 7.65% drop—can it hold the range?

Published October 15, 2025 · updated 2025-12-29 · 9984.T chart, levels and live analysis

Key Updates

SoftBank Group is bouncing back after yesterday’s pullback, up 2.25% to ¥21,350, partially offsetting the 7.65% decline from the previous report. The stock remains in a consolidation zone after the sharp rally in September-October driven by the AI boom and the $100 billion Stargate fund plan. Intel’s announcement of a new AI chip for data centers fuels overall optimism in the artificial-intelligence sector.

Current Trend

Short-term correction within a strong uptrend. Year-to-date the shares are up 132.44%, and over the past six months they have surged an extraordinary 208.84%. The month-to-date gain is 17.11%, indicating continued investor interest in SoftBank’s AI exposure. A five-day rise of 1.52% shows stabilization after recent volatility.

Investment Thesis

SoftBank remains a key beneficiary of the AI revolution thanks to strategic stakes in Arm Holdings and a portfolio of tech assets. The announced $100 billion Stargate project, involving OpenAI, Oracle and MGX, positions the company as a central player in building U.S. AI infrastructure. The Vision Fund and direct robotics investments create synergies for long-term growth.

Thesis Status

The investment thesis stays strong despite short-term volatility. Fundamental drivers—Stargate participation, exposure to Arm and the AI ecosystem—are unchanged. The current pullback is viewed as a technical pause within a structural growth story tied to monetizing SoftBank’s AI investments.

Key Drivers

The primary catalyst remains involvement in the Stargate project and the broader AI sector growth. Intel’s announcement of a new AI chip for data centers underscores accelerating AI-infrastructure development, which benefits SoftBank’s portfolio companies. Ongoing investments in robotics and autonomous tech add further growth points.

Technical Picture

The stock is trading in a ¥20,880-¥23,240 range after the September surge. The ¥21,350 level sits in the middle of the range, indicating consolidation. Resistance sits at ¥22,610 and ¥23,240, while support is at ¥20,880. RSI is in a neutral zone after previously being overbought. Volume remains elevated, confirming institutional interest.

Bull Case

  • Participation in the $100 billion Stargate project gives unprecedented exposure to U.S. AI infrastructure with guaranteed revenue streams
  • Portfolio company Arm Holdings remains critical for AI chips, supported by ongoing Intel investments in AI processors
  • The Vision Fund is positioned to monetize AI startups at the peak of tech-valuation cycles
  • Strategic robotics investments create synergies with AI developments and open new markets
  • A strong balance sheet and access to capital enable participation in large-scale global AI projects

Bear Case

  • High valuations (208% gain over six months) raise the risk of a correction on any negative AI-sector news
  • Reliance on volatile tech assets increases systemic portfolio risk
  • Geopolitical tensions could limit the Japanese firm’s involvement in strategic U.S. AI projects
  • Rising competition in AI, evident from Intel’s activity and that of other players, may compress investment returns
  • Historically strong correlation with tech indices makes the stock vulnerable to sector sell-offs
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