Koken Boring Machine

6297.TTSE STANDARD

Key numbers · FY ended 2025-03

Revenue¥10.6bn+11.4% YoY Operating income¥654m+16.8% YoY Net income (owners)¥456m+52.3% YoY Total assets¥13.9bn+3.4% YoY EPS (basic)¥53.87+52.0% YoY

Full financial history and reports →

Stock price6297 · View chart ↗

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Latest filings

Fri, Aug 8 · JST1 filing

16:215% STAKEKoken Boring Machine · EnBio Holdings, Inc · 8.55% → 0.00%−8.55pp

Thu, Aug 7 · JST1 filing

11:065% STAKEKoken Boring Machine · Mizuho Securities Co., Ltd. + 1 joint holder · 5.39% → 0.00%−5.39pp

Wed, Aug 6 · JST1 filing

12:135% STAKEKoken Boring Machine · Rakuten Securities Inc · 6.69% → 0.08%−6.61pp

Tue, Aug 5 · JST1 filing

16:245% STAKEKoken Boring Machine · Hitachi Construction Machinery Co., Ltd. · 8.73% → 0.00%−8.73pp

Fri, Aug 1 · JST1 filing

14:025% STAKEKoken Boring Machine · Takashi Nakayama · 6.09% → 0.00%−6.09pp

All filings →

Major holders (5%+) · 1

Holder	Stake	Change	Filed
Hulic Co., Ltd.	80.07%	—	2025-07-30

Each holder's own ratio from its most recent large-shareholding report.