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SoftBank (9984.T) stock analysis, December 21, 2025: SoftBank jumps 6.14% to ¥17,115, but 1-month drop still -9.08%

Published December 21, 2025 · updated 2025-12-29 · 9984.T chart, levels and live analysis

Key Updates

SoftBank shares surged 6.14% in the latest session to ¥17,115, recovering 4.33% since the December 19 report and marking the strongest single-day gain in recent weeks. This technical bounce follows a volatile period where shares declined 44% from late-October peaks amid AI bubble concerns. The recovery comes despite continued AI infrastructure spending uncertainty, with Oracle's disappointing results and data center financing concerns weighing on the sector. The stock maintains exceptional YTD performance at +86.34%, though one-month returns remain negative at -9.08%, reflecting the ongoing consolidation phase after the dramatic October-November rally.

Current Trend

SoftBank is experiencing a technical recovery within a broader correction phase. The +6.14% daily gain represents the strongest session since the late-November selloff, pushing shares above the ¥17,000 psychological level. However, the 5-day performance of -4.36% and 1-month decline of -9.08% indicate the correction from the ¥19,445 October peak remains intact. The 6-month surge of +95.69% and YTD gain of +86.34% demonstrate the stock's exceptional performance trajectory, primarily driven by OpenAI exposure and AI infrastructure positioning. Key resistance now sits at ¥18,000-18,500, while immediate support has formed around ¥15,390-16,000. The recent volatility pattern suggests the market is reassessing SoftBank's valuation following the aggressive October-November rally, with current price action testing whether ¥16,000-17,000 can serve as a new consolidation range.

Investment Thesis

SoftBank's investment case centers on its strategic positioning as the primary public market proxy for OpenAI exposure, combined with aggressive AI infrastructure expansion through data center acquisitions and chip design capabilities. The company has committed $34.7 billion for an 11% stake in OpenAI (valued at ~$500 billion), with $22.5 billion deployed in December 2025 alone. This thesis is complemented by the $6.5 billion Ampere Computing acquisition (completed November 2025), providing ARM-based chip design capabilities, and active pursuit of data center assets including Switch (seeking $50 billion valuation) and DigitalBridge ($108 billion AUM). The strategic rationale rests on Masayoshi Son's conviction that artificial superintelligence will drive 10% of global GDP and require $10 trillion in cumulative investment. However, execution risks include the controversial $5.83 billion Nvidia stake sale (November 2025) to fund AI investments, heavy concentration risk with 11% OpenAI ownership representing significant portfolio exposure, and mounting market concerns about AI investment profitability timelines following Oracle's disappointing guidance.

Thesis Status

The investment thesis faces increased scrutiny but remains structurally intact. Recent developments support the strategic direction: the Ampere acquisition completion provides vertical integration in chip design, active pursuit of Switch and DigitalBridge demonstrates commitment to infrastructure buildout, and Q2 net profit doubling to ¥2.5 trillion ($16.6 billion) validates OpenAI valuation gains. However, material headwinds have emerged: Oracle's results triggered sector-wide concerns about AI infrastructure spending timelines, with Blue Owl Capital's $10 billion Michigan data center financing reportedly stalling. The 44% decline from October peaks reflects market skepticism about near-term AI profitability, while SoftBank's decision to sell its entire Nvidia position—despite Son stating he "was crying" about the sale—raises questions about capital allocation flexibility. The thesis now depends critically on OpenAI maintaining its $500 billion valuation and demonstrating a path to profitability, as SoftBank has effectively transformed into a concentrated AI infrastructure play with limited diversification.

Key Drivers

Near-term catalysts include: (1) Switch acquisition progress, with discussions ongoing for the $50 billion transaction that could materially expand data center capacity; (2) DigitalBridge acquisition talks, potentially closing within weeks to add $108 billion in digital infrastructure AUM; (3) OpenAI's next funding round and competitive positioning against Google's Gemini 3, which has intensified market concerns about market share; (4) potential $1 billion investment in Skild AI alongside Nvidia, valuing the robotics startup at $14 billion and expanding SoftBank's AI ecosystem; (5) Stargate Project execution with OpenAI and Oracle partners for $500 billion U.S. AI infrastructure buildout; and (6) negotiations with the White House to build high-tech manufacturing facilities on federal land using Japan trade deal capital. Key risks center on AI spending sentiment, with Oracle's guidance miss raising questions about infrastructure investment timelines and data center financing challenges creating sector-wide pressure.

Technical Analysis

The daily chart shows a strong bullish reversal candle with +6.14% gain on heavy volume, breaking above the ¥16,500 resistance that capped previous recovery attempts. This represents the first decisive move above the 5-day moving average after three weeks of consolidation. The ¥17,115 close positions the stock in the middle of the ¥16,000-18,500 trading range established during the November-December correction. Volume patterns suggest institutional accumulation at ¥15,390-16,500 levels, with the recent selloff creating a potential double-bottom formation around ¥15,390. Key technical levels: immediate resistance at ¥17,500-18,000 (20-day moving average zone), major resistance at ¥18,500-19,445 (October highs), immediate support at ¥16,500 (prior resistance), and critical support at ¥15,390 (November lows). The RSI has moved from oversold territory into neutral range (45-50), suggesting room for further recovery. However, the 1-month decline of -9.08% and 5-day weakness of -4.36% indicate the broader correction trend remains active. A sustained move above ¥18,000 would signal resumption of the primary uptrend, while failure to hold ¥16,500 would suggest retesting the ¥15,390 lows.

Bull Case

Bear Case

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