Kajima Corporation
Kajima is a 186-year-old Japanese mega-contractor, one of the Big Five building Japan's biggest projects.
On the record
Checkpoint: Q1 FY2026 earnings disclosure and Supreme Court ruling on the maglev bid-rigging appeal
The call
Kajima is compounding profit and expanding overseas while its automation and client networks keep AI and rivals mostly at the edges, for now.
Kajima builds large projects, from office buildings to semiconductor factories, and makes money by winning contracts and executing them efficiently. It is hard to replace because it has decades of trusted relationships with clients, a skilled workforce that is becoming rarer in Japan, and custom software and robots that make its projects run better than competitors can do. The biggest risk is if Japan's central bank raises interest rates sharply, which would hurt real estate deals and shrink the profit growth Kajima is counting on right now.
Why
01
AI pressure: Physical AI platforms from Nvidia, Fujitsu, FANUC, Yaskawa, Kawasaki. These platforms run factories now, not job sites. If they move onto construction sites, they could copy what Kajima's own A4CSEL automation does. Could AI do the core job? Unlikely.
02
Bigger players: Obayashi or Shimizu. Fellow Big Five contractors could take over the next wave of megaprojects only if Kajima stumbles on execution of something like the Rapidus fab. Could a giant copy it? Probably.
03
What protects it. Decades of client trust, bonding capacity for huge projects, and a shrinking labor pool that favors firms with existing crews and licenses.
What would change this call
Supreme Court ruling on the maglev bid-rigging appeal (pending as of May 2025). An adverse ruling could bring debarment or compliance costs that weaken Kajima's bidding position.
Bank of Japan raises rates materially within 6 months of the FY2025 forecast. Would test whether Kajima's real-estate segment and profit forecast, which assume falling rates, actually hold up.
Whether Obayashi or Shimizu win the next major semiconductor-fab contract after Kajima's Rapidus IIM-1 completes (Mar 2026). Would show a rival capturing the next wave of megaprojects instead of Kajima.
Bank of Japan raises rates materially within 6 months of the FY2025 forecast. Would test whether Kajima's real-estate segment and profit forecast, which assume falling rates, actually hold up.
Whether Obayashi or Shimizu win the next major semiconductor-fab contract after Kajima's Rapidus IIM-1 completes (Mar 2026). Would show a rival capturing the next wave of megaprojects instead of Kajima.
Key numbers
- FY2025 net income ¥170.0B, beat ¥130B target
- Q1-Q3 FY2025 operating income up 81.6% YoY
- Overseas revenue topped ¥1T, up 29.6% YoY
Named risks
- Supreme Court could uphold JFTC cease and desist order in maglev bid-rigging case, pending since May 26, 2025.
- Real estate segment forecasts hinge on falling BoJ interest rates; a hawkish rate move could compress that segment within 6 months.
- Physical AI platforms shipping into construction sites specifically could commoditize A4CSEL's automation edge.
- Structural labor shortage projected to worsen roughly 20% further by FY2040 raises execution risk on megaprojects.
- Megaproject execution failure on a Rapidus-class fab could let Obayashi or Shimizu capture next contract wave.
Rivals, as read in July 2026
| Rival | Direction | Evidence |
|---|---|---|
| Obayashi Corporation | contesting | Both bid on same large civil and building tenders; both faced JFTC maglev bid-rigging case |
| Shimizu Corporation | contesting | Peer in Big Five; JCR noted margin pressure from rising costs across FY2021-2023 (Mar 2025) |
| Taisei Corporation | contesting | Big Five peer; also subject to Chuo Shinkansen maglev bid-rigging investigation |
| Takenaka Corporation | contesting | Privately held Big Five rival competing for same semiconductor fab and megaproject contracts |
| Archetype AI and Physical AI platforms | gaining on | Nvidia-Fujitsu-FANUC-Yaskawa-Kawasaki consortium announced July 16, 2026, could commoditize site automation |
Questions people ask
- Is Kajima Corporation profitable in 2026?
- Yes. Kajima reported net income of 170.0 billion yen for FY2025 (ended March 31, 2026), announced May 14, 2026, exceeding its own medium term plan target of 130 billion yen and marking a fifth consecutive year of profit growth.
- Could AI replace Kajima Corporation?
- No. Kajima is a licensed, bonded general contractor of record; AI tools like its A4CSEL automation and the Newton physical AI pilot with Archetype AI (announced April 28, 2025) are internal productivity tools that feed Kajima's business rather than substitute for its execution role.
- Who is Kajima Corporation's biggest competitor?
- Kajima competes within Japan's Big Five super general contractors: Obayashi, Shimizu, Taisei, and Takenaka, all TSE listed and bidding on the same large civil and building tenders as of 2024, per Wikipedia and Mordor Intelligence data.
- Who owns Kajima Corporation?
- Kajima is publicly listed on the Tokyo Stock Exchange Prime and Nagoya Stock Exchange Premier (ticker 1812) with no controlling shareholder; largest holders as of March 31, 2025 were Master Trust Bank of Japan (17.14%) and Custody Bank of Japan (9.47%), with founding family member Kimiko Kajima holding 3.35%.
- What legal risk does Kajima Corporation face over the maglev bid rigging case?
- Tokyo High Court dismissed Kajima's appeal against a Japan Fair Trade Commission cease and desist order tied to the 2018 Chuo Shinkansen maglev bid rigging case on May 15, 2025; Kajima filed a final appeal to the Supreme Court, announced May 26, 2025, and the case remains pending.
- Is Kajima Corporation growing its overseas business?
- Yes. Kajima's overseas subsidiaries and affiliates generated revenue exceeding 1 trillion yen for the first time in FY2024 (ended March 31, 2025), up 29.6% year over year, according to results reported May 14, 2025.
Timeline
- 2026-07-16Nvidia and Fujitsu, FANUC, Yaskawa, Kawasaki announce Japan Physical AI consortium for factories
- 2026-05-14FY2025 results: net income 170.0B yen, beats 130B yen medium-term target
- 2026-02-12Q1-Q3 FY2025 operating income up 81.6% YoY to 171.8B yen
- 2025-05-26Kajima announces final Supreme Court appeal in maglev bid-rigging case
- 2025-05-15Tokyo High Court dismisses Kajima's appeal against JFTC cease and desist order
- 2025-05-14FY2024 results: revenue 2,911.8B yen, up 9.3%; overseas revenue tops 1T yen
- 2025-04-28Kajima partners with Archetype AI to train Newton physical AI on jobsite video
- 2024-12A4CSEL for Tunnel completes full automation of six mountain tunnel excavation steps
- 2023-09Kajima begins construction of Rapidus IIM-1 semiconductor pilot line
- 2020A4CSEL automated dam construction goes live at Naruse Dam with up to 20 unmanned machines
Revision history
25 July 2026
First assessed. Hard to displace. The text above is fixed as of this date and is not edited afterwards.
In the same band
Sources
- KAJIMA FACT BOOK (2025-11-11)
- Financial Statements FY2024 Summary (2025-05-14)
- KAJIMA Integrated Report 2025 (Company Information・Stock Information) (2025-03-31)
- Overview of Financial Results FY ended March 31 2025 (2025-05-14)
- FY2025 Financial Results presentation (2026-05-14)
- FY2025 3rd Quarter Financial Results (2026-02-12)
- KAJIMA Integrated Report 2025 (Part 2) (2025-03-31)
- Porter's Five Forces of Mitsubishi Estate
- KAJIMA Integrated Report 2025 (At a Glance) (2025-03-31)
- A4CSEL for Tunnel
- Once-reluctant builders now using unmanned machinery, AI (2025-03-09)
- How The 184-Year-Old KAJIMA Is Embracing an AI Future in Construction (2025-04-28)