SoftBank (9984.T)

Key Updates

SoftBank shares surged 3.47% to ¥4,688 since the last report, extending the recovery from post-earnings volatility with a cumulative 17.23% gain over five days. The rally is driven by Morningstar's February 13 report highlighting aggressive OpenAI investment positioning, reinforcing the AI investment thesis that has propelled shares 6.55% year-to-date. The stock has now recovered fully from the earnings-related selloff, with momentum accelerating as the market increasingly views SoftBank as a strategic AI proxy through its concentrated OpenAI exposure.

Current Trend

SoftBank exhibits strong bullish momentum across all timeframes: +6.79% daily, +17.23% weekly, +16.91% monthly, and +13.51% over six months. The 6.55% YTD gain follows a near-doubling in 2025, establishing a robust uptrend supported by AI sector enthusiasm. The current price of ¥4,688 represents a complete recovery from the February 12 post-earnings dip to ¥4,409, with the stock now testing resistance near the ¥4,690-4,756 range established in early February. The 17.23% five-day surge indicates accelerating institutional buying following the earnings digest period, with volume patterns suggesting sustained accumulation rather than speculative positioning.

Investment Thesis

SoftBank's investment case centers on its transformation into a concentrated AI play through strategic exposure to OpenAI, Arm Holdings, and emerging AI infrastructure assets. The company holds an 11% stake in OpenAI valued at $54.4 billion against a $34.6 billion investment, generating $20 billion in unrealized gains. The thesis relies on OpenAI maintaining leadership in generative AI while SoftBank executes asset monetization (PayPay IPO targeting $10+ billion valuation, T-Mobile stake sales totaling $9.17 billion) to fund continued AI investments without excessive leverage. The strategy assumes OpenAI's valuation trajectory toward $830 billion justifies current concentration risk, with Arm's AI chip positioning and Vision Fund portfolio providing diversification. Critical to the thesis is SoftBank's ability to maintain leverage ratios below 25% while deploying capital into high-conviction AI opportunities, leveraging Masayoshi Son's track record in identifying transformative technology trends.

Thesis Status

The investment thesis remains firmly intact and strengthening. The Morningstar report confirms aggressive OpenAI positioning, validating the AI-centric strategy. Q3 results delivered ¥248.59 billion net profit versus ¥369.2 billion loss year-prior, with Vision Funds generating ¥735.49 billion gains. The $20 billion unrealized gain on OpenAI (58% return on $34.6 billion invested) demonstrates thesis execution, though leverage increased from 16.5% to 21.5% as anticipated. PayPay's IPO filing targeting $10+ billion valuation provides near-term monetization catalyst to fund additional OpenAI investment (up to $30 billion in discussions). The primary thesis risk—OpenAI competitive positioning—shows stabilization with ChatGPT returning to 10%+ monthly growth. Asset sales ($5.8 billion Nvidia, $9.17 billion T-Mobile) successfully funded investments without equity dilution, though S&P's creditworthiness concerns warrant monitoring as leverage approaches 25% threshold.

Key Drivers

Morningstar's analysis of SoftBank's aggressive OpenAI investment strategy catalyzed the latest rally, framing the company as a leading AI sector participant. The report emphasizes SoftBank's dual approach through direct investments and Vision Funds targeting pre-IPO technology companies, with AI themes driving future capital allocation. PayPay's public IPO filing represents a major monetization event, with the payments subsidiary generating ¥103.3 billion profit on ¥278.5 billion revenue in nine months—demonstrating SoftBank's ability to build valuable operating businesses beyond investment vehicles. The potential $10+ billion valuation would provide substantial capital for continued AI investments while maintaining PayPay as a subsidiary. OpenAI's reported return to 10%+ monthly ChatGPT growth addresses previous competitive concerns from Anthropic and Google, supporting the $54.4 billion valuation of SoftBank's stake. The combination of strategic positioning validation and concrete monetization pathways has shifted market sentiment from post-earnings caution to renewed optimism about SoftBank's AI-centric transformation.

Technical Analysis

SoftBank has established a strong uptrend channel with support at ¥4,409 (February 12 post-earnings low) and resistance at ¥4,756 (February 13 pre-selloff high). The current price of ¥4,688 sits in the upper third of this range, with the 17.23% five-day rally suggesting momentum toward breaking through ¥4,756 resistance. The 6.79% single-day gain indicates institutional accumulation, while the 16.91% monthly advance has established a clear higher-low pattern from the ¥4,000 level tested in mid-January. Volume expansion during the recent rally confirms conviction, distinguishing this move from the volatile post-earnings period. The stock trades well above short-term moving averages, with the 6.55% YTD gain providing a foundation for further upside. Key resistance levels cluster at ¥4,690-4,756, representing the February consolidation zone, while support has solidified at ¥4,531 (previous report level) and ¥4,409 (earnings reaction low). A sustained break above ¥4,756 would target the psychological ¥5,000 level, representing 6.7% upside from current levels.

Bull Case

• OpenAI Stake Appreciation: SoftBank's $34.6 billion investment in OpenAI is now valued at $54.4 billion, generating $20 billion in unrealized gains (58% return), with discussions for an additional $30 billion investment at an $830 billion valuation that could drive further significant appreciation. Source: Morningstar
• PayPay IPO Monetization: PayPay's public filing for a U.S. IPO targets a $10+ billion valuation, with the subsidiary generating ¥103.3 billion profit on ¥278.5 billion revenue in nine months (up from ¥28.96 billion profit year-prior), providing substantial capital for AI investments while maintaining subsidiary status. Source: Bloomberg
• Vision Funds Turnaround: Vision Funds business recorded ¥735.49 billion profit versus ¥309.93 billion loss year-prior, demonstrating portfolio recovery and validating SoftBank's technology investment expertise beyond the OpenAI concentration. Source: WSJ
• Strategic AI Positioning Validation: Morningstar's analysis confirms SoftBank's aggressive OpenAI investment strategy positions the company as a major AI sector player, with the investment approach combining direct stakes and Vision Funds targeting pre-IPO technology companies focused on internet and AI themes. Source: Morningstar
• OpenAI Competitive Stabilization: ChatGPT has returned to exceeding 10% monthly growth according to CEO Sam Altman, addressing previous concerns about competitive pressure from Anthropic's Claude and Google's Gemini, which supports the sustainability of SoftBank's $54.4 billion OpenAI valuation. Source: Morningstar

Bear Case

• Excessive Leverage and Credit Risk: SoftBank's leverage ratio increased from 16.5% to an estimated 21.5% by December, with S&P Global Ratings warning that the AI spending spree and declining Arm share values are pressuring creditworthiness, constraining future investment capacity. Source: Bloomberg
• Extreme OpenAI Concentration Risk: With an 11% stake valued at $54.4 billion representing a substantial portion of assets, SoftBank is increasingly viewed as a publicly traded OpenAI proxy, creating vulnerability to any OpenAI-specific challenges including competitive threats, regulatory issues, or valuation corrections. Source: Reuters
• Earnings Miss and Execution Concerns: Q3 net profit of ¥248.59 billion missed analyst estimates of ¥336.7 billion, indicating potential challenges in portfolio management and raising questions about the sustainability of Vision Funds gains. Source: Morningstar
• Asset Liquidation Pressures: To finance AI investments, SoftBank sold its entire $5.8 billion Nvidia stake and $9.17 billion in T-Mobile shares, reducing exposure to proven technology winners and limiting portfolio diversification while increasing dependence on unproven AI bets. Source: Reuters
• Deal Execution Setbacks: SoftBank halted the planned $50 billion acquisition of data center operator Switch Inc., which was intended to support the Stargate AI infrastructure project, suggesting potential challenges in executing large-scale strategic transactions despite aggressive acquisition strategy. Source: Bloomberg