The so-what

Japan's prime minister Sanae Takaichi has attached a price tag to her national revival platform: 370 trillion yen, roughly $2.3 trillion, spread across fourteen years through fiscal 2040 1 2. For investors who spent the first half of 2026 chasing the Nikkei's AI-and-chip rally to a record above 72,000, the plan matters less for its headline size than for where the money is now visibly rotating: out of pure semiconductor beta and into defense contractors, shipbuilders and infrastructure names that were afterthoughts a year ago 7. That rotation is no longer theoretical. It is showing up in earnings, in capital raises, and in a widening gap between how the market prices AI capex versus how it prices rearmament.

Anatomy of the 370 trillion yen plan

The government's blueprint, unveiled June 24, spans seventeen strategic fields running to fiscal 2040. Semiconductors alone draw roughly 68 trillion yen, AI and robotics another 10.5 trillion yen, and biotechnology and pharmaceuticals about 20.8 trillion yen; artificial intelligence and chips combined account for close to 101.6 trillion yen of the total 1 2. Defense, shipbuilding, space and critical materials sit alongside those categories, funded in part through so-called bridge bonds that have already drawn scrutiny over deficit financing 2. The structure matters for equity investors because it formalizes what had been an implicit trade since Takaichi's landslide win: capital that used to flow almost exclusively toward chip fabs and data-center suppliers is now explicitly mandated toward the industrial base that supports both commercial shipbuilding and rearmament, positioned as deterrence against a more assertive China 3 4.

From chips to cannons

The rotation shows up cleanly in the numbers. Kawasaki Heavy Industries was among the best performers in the MSCI World index earlier this year, rallying as much as 20 percent in a single week on expectations that Takaichi would use her mandate to loosen the constitutional restrictions that have long capped Japan's military posture 3. Defense contractor IHI Corp climbed 8.7 percent in the same stretch, instrumentation maker Tokyo Keiki rose 7.1 percent and Nippon Avionics gained 7.0 percent 3. Mitsubishi Heavy Industries' Aircraft, Defense and Space unit posted first-half fiscal 2025 revenue of about 1.4 trillion yen, up around 35 percent year on year, with segment profit climbing roughly 52 percent to more than 151 billion yen; management is now guiding to 1.5 trillion yen of Aircraft, Defense and Space revenue for fiscal 2026 on the back of large multi-year programs 8. By mid-July, Saxo Bank's Asia desk was describing the broader Nikkei rally as shifting focus beyond AI toward defense and infrastructure plays tied directly to the Takaichi program 7.

The first stress test

Kawasaki Heavy also supplied the rotation's first real stress test. On July 1 the company said it would raise about 200 billion yen, roughly $1.23 billion, through new shares and convertible bonds sold mainly to foreign institutional investors, to fund capital expenditure tied to aircraft engines, hydrogen supply and the government's strategic-sector push 5. The market's answer was not enthusiasm: the stock fell 7 percent on dilution concerns, touching its lowest level since early February and ranking among the Nikkei 225's worst performers that week 5. That the same company had rallied weeks earlier on a Nvidia physical-AI robotics tie-up only sharpened the contrast: investors will fund Kawasaki Heavy's AI optionality without blinking, but they still price defense-linked capex increases as a shareholder cost rather than a pure growth catalyst 6. Convertible structures, which defer dilution by converting at a preset price, are becoming the standard tool Japanese industrials use to raise capital without repeating that reaction.

Budgets have not quite caught up to rhetoric

The fiscal reality underneath the rally is more halting than the plan's headline number suggests. Tokyo's defense budget for fiscal 2026 is on track to land at about 1.9 percent of GDP, just short of the 2 percent target Takaichi had promised to hit two years ahead of the original schedule 4. That gap does not undercut the equity story so much as it clarifies the timeline: the defense-and-infrastructure trade is a multi-year re-rating tied to a fourteen-year disbursement window, not a single-budget-cycle event, and investors betting on it should expect the pace of actual contract awards, not the size of the headline pledge, to set the tempo of individual stock moves.

What to watch

For positioning, three signals matter more than the next Nikkei print. First, order intake at the prime contractors, Mitsubishi Heavy and Kawasaki Heavy, and their subcontractor base, since backlog conversion, not budget announcements, is what ultimately shows up in revenue 8. Second, the cadence of capital raises across the sector: Kawasaki Heavy's convertible-bond structure looks likely to become the template other Japanese industrials use as the 370 trillion yen program disburses, and each new issue is a test of whether the market has stopped treating dilution as a red flag 5. Third, whether the fiscal 2027 budget closes the remaining gap to 2 percent of GDP, which would remove the main argument for treating the defense trade as rhetoric running ahead of cash 4. Until that gap closes, the sharper opportunity may sit with mid-cap suppliers such as Tokyo Keiki and Nippon Avionics, names that move on discrete order news rather than on macro headlines about a fourteen-year plan most of their current shareholders will not hold through to completion 3.