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SoftBank (9984.T) stock analysis, September 12, 2025: SoftBank at record ¥18,220, but a 4.35% dip was quickly erased

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

Key Updates

SoftBank Group keeps climbing, up 2.39% since the last report to ¥18,220, with the bullish trend intact as Japan's tech rally rolls on. The stock remains the top gainer on the Nikkei, which hit a fresh record of 44,372.50, with SoftBank leading the index on AI optimism.

Current Trend

The stock has been exceptional, up 98.37% over the past year and 134.16% in six months. Near-term volatility is high, with a 17.25% weekly gain and 22.53% monthly advance. Technical momentum stays positive, supported by the broader tech rally across Asia and record highs in Tokyo.

Investment Thesis

SoftBank is positioned as a key beneficiary of the AI revolution through its Vision Fund portfolio and strategic tech investments. The company is riding the global push into AI infrastructure, including projects on the scale of Stargate, which compounds the value of its holdings.

Thesis Status

The thesis is fully playing out. The steady climb over recent months reflects investors pricing in the AI opportunity. SoftBank's status as the Nikkei's top gainer underscores its unique spot in the tech ecosystem and its ability to create value through dealmaking.

Key Drivers

The main catalyst is the ongoing tech rally fueled by AI hopes. There's also support from broad gains in tech and financial stocks on the Nikkei. A secondary driver is AI infrastructure buildouts like Stargate, with Oracle's backlog at $455 billion, highlighting the scale of AI investment.

Technical Picture

Shares are trading at record highs around ¥18,220, in a strong uptrend with no meaningful resistance overhead. The brief pullback on September 9 (-4.35%) was fully retraced, a sign of healthy trend structure. Volume remains elevated, pointing to institutional participation in the move.

Bull Case

Bear Case

  • High volatility, as shown by the -4.35% drop three days ago
  • Dependence on broader market sentiment around inflation data and Fed policy
  • Risk of a tech pullback if rate uncertainty persists
  • Extreme valuation after a 134.16% six-month surge
  • Potential profit-taking by institutions at record highs
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