{
  "spec_version": "3",
  "endpoint": "manifest",
  "stock_code": "5423",
  "company_name": "東京製鐵",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/5423/",
  "api_url": "/api/5423/manifest.json",
  "updated": "2026-09-05",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/5423/",
  "version": "3",
  "profile": {
    "company_color": "#2F5A99",
    "industry": "metal",
    "industry_detail": "metal_steel_electric",
    "published": "2026-06-04",
    "updated": "2026-09-05",
    "found": {
      "year": 1934,
      "location": "東京都足立区",
      "founder": "岡田菊治郎"
    },
    "listing": {
      "listed_year": 1961,
      "delisted_year": null,
      "unlisted": false
    },
    "name_kana": "トウキョウセイテツ"
  },
  "resources": {
    "history": {
      "is_active": true,
      "url": "/api/5423/history.json",
      "format": "json",
      "description": "Chaptered history essay + summary + author's notes + recent developments and outlook + sources and citations",
      "chars_ja": 6248
    },
    "timeline": {
      "is_active": true,
      "url": "/api/5423/timeline.json",
      "format": "json",
      "description": "Chronology + management-decision cards",
      "chars_ja": 5102
    },
    "decisions": {
      "is_active": true,
      "url": "/api/5423/decisions.json",
      "format": "json",
      "description": "Index of this company's management decisions — one decision = one endpoint. Holds no body text; follow each api_url for the full dossier.",
      "chars_ja": 2746,
      "items": [
        {
          "slug": "daimaru-merger-1971",
          "title": "全株式を取得していた大丸製鋼の吸収合併と九州工場の開設",
          "year": 1971,
          "type": "acquisition",
          "url": "/api/5423/decisions/daimaru-merger-1971.json",
          "chars_ja": 7537
        },
        {
          "slug": "open-hearth-exit-1978",
          "title": "岡山工場の平炉停止と江戸川工場閉鎖による電炉一貫体制への移行",
          "year": 1978,
          "type": "restructuring",
          "url": "/api/5423/decisions/open-hearth-exit-1978.json",
          "chars_ja": 7762
        },
        {
          "slug": "hot-coil-entry-1991",
          "title": "高炉独占品種だった熱延広幅帯鋼への電炉メーカーとしての量産参入",
          "year": 1991,
          "type": "new_business",
          "url": "/api/5423/decisions/hot-coil-entry-1991.json",
          "chars_ja": 7383
        }
      ],
      "by_type": [
        {
          "key": "acquisition",
          "count": 1,
          "url": "/api/5423/decisions/by-type/acquisition.json"
        },
        {
          "key": "new_business",
          "count": 1,
          "url": "/api/5423/decisions/by-type/new_business.json"
        },
        {
          "key": "restructuring",
          "count": 1,
          "url": "/api/5423/decisions/by-type/restructuring.json"
        }
      ],
      "by_decade": [
        {
          "key": "1970s",
          "count": 2,
          "url": "/api/5423/decisions/by-decade/1970s.json"
        },
        {
          "key": "1990s",
          "count": 1,
          "url": "/api/5423/decisions/by-decade/1990s.json"
        }
      ]
    },
    "executives": {
      "is_active": true,
      "url": "/api/5423/executives.json",
      "format": "json",
      "description": "Full executive data (career, expertise, compensation) + past leaders",
      "chars_ja": 14062
    },
    "shareholders": {
      "is_active": true,
      "url": "/api/5423/shareholders.json",
      "format": "json",
      "description": "Major-shareholder data (by FY × rank, including long-term holders)",
      "chars_ja": 44900
    },
    "financials": {
      "is_active": true,
      "url": "/api/5423/financials.json",
      "format": "json",
      "description": "Pure PL/BS/CF from FY01 onward",
      "chars_ja": 37948
    },
    "financials-longterm": {
      "is_active": true,
      "url": "/api/5423/financials-longterm.json",
      "format": "json",
      "description": "Long-term performance time series from founding to present (sales, profit, employees)",
      "chars_ja": 37856
    },
    "segments": {
      "is_active": true,
      "url": "/api/5423/segments.json",
      "format": "json",
      "description": "Financial data by business segment",
      "chars_ja": 1577
    },
    "regions": {
      "is_active": true,
      "url": "/api/5423/regions.json",
      "format": "json",
      "description": "Sales by region",
      "chars_ja": 8221
    },
    "workforce": {
      "is_active": true,
      "url": "/api/5423/workforce.json",
      "format": "json",
      "description": "Workforce data (headcount, annual pay, average age)",
      "chars_ja": 3413
    },
    "financials-csv": {
      "is_active": true,
      "url": "/api/5423/financials.csv",
      "format": "csv",
      "description": "Annual financial data as CSV (reference; JSON recommended)",
      "chars_ja": 3706
    },
    "financials-history-csv": {
      "is_active": true,
      "url": "/api/5423/financials_history.csv",
      "format": "csv",
      "description": "Long-term performance as CSV (reference; JSON recommended)",
      "chars_ja": 5005
    },
    "segments-csv": {
      "is_active": true,
      "url": "/api/5423/segments.csv",
      "format": "csv",
      "description": "Segment data as CSV (reference; JSON recommended)",
      "chars_ja": 315
    }
  }
}