SoftBank surged past Toyota to become Japan’s largest company by market capitalisation, driven by a rally in artificial‑intelligence equities. The conglomerate’s share price jumped after investors poured money into AI‑focused chip makers and cloud providers, lifting its valuation above Toyota’s long‑standing lead. The shift marks the first time a non‑automaker has topped the Nikkei 225’s heavyweight list. The move also lifted the overall tech weighting in the index.

Toyota, whose market cap hovered around ¥30 trillion, saw its dominance erode as SoftBank’s holdings in Vision Fund‑backed AI startups surged. Analysts attribute the change to SoftBank’s aggressive capital deployment since 2023, contrasting with Toyota’s slower pivot toward software and autonomous‑driving ventures. Toyota plans to boost its software unit to reclaim ground, but analysts remain skeptical. The ranking reshuffle could influence shareholder sentiment across Japan’s blue‑chip sector.

Investors will now watch how SoftBank leverages its new stature to negotiate better terms with partners and pursue further AI acquisitions. The market‑cap leap also pressures other conglomerates, such as Mitsui and Sumitomo, to accelerate digital transformation. With SoftBank’s stock now a bellwether for Japan’s tech exposure, its performance will directly affect the broader index. Quarterly earnings will test whether the hype translates into sustainable profit growth.