{
 "ticker": "BRK.B",
 "name": "Berkshire Hathaway (Class B)",
 "url": "https://grantbishop.pages.dev/index/BRK.B",
 "sells": "Berkshire Hathaway is a holding company that owns insurance, railroad, utility and consumer businesses.",
 "why": "We follow it because its business sits among the companies that hold data the public web cannot reach.",
 "questions": [
  {
   "slug": "proprietary-data",
   "question": "Who holds data the public web cannot reach?",
   "url": "https://grantbishop.pages.dev/index/q/proprietary-data"
  }
 ],
 "tests": [
  {
   "id": "W-7",
   "claim": "Businesses keep adopting AI, but the economy-wide productivity lift does not arrive before 2028.",
   "url": "https://grantbishop.pages.dev/claims/ai-productivity-not-before-2028"
  }
 ],
 "reports_next": null,
 "latest_disclosed": {
  "form": "10-Q",
  "filed": "2026-08-10",
  "period": "2026-06-30",
  "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526341032/brka-20260630.htm"
 },
 "disclosed": [],
 "check": "Checked against the company's own business description in its latest annual filing.",
 "log": [
  {
   "date": "2026-10-19",
   "note": "Entry rewritten in plain words: what the company sells, and why we follow it."
  },
  {
   "date": "2026-10-12",
   "note": "Verified against the 10-Q filed 2026-08-10 at launch."
  }
 ],
 "living_report": {
  "report": false,
  "last_revised": null,
  "next_disclosure": null,
  "timeline": [
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   },
   {
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   },
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   {
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   },
   {
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    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526083899/brka-20251231.htm",
    "what_it_said": null,
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   },
   {
    "form": "8-K/A",
    "filed": "2026-01-06",
    "period": "2025-05-03",
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526004727/d32284d8ka.htm",
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   {
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   {
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   },
   {
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    "period": "2025-04-17",
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   },
   {
    "form": "8-K",
    "filed": "2025-02-24",
    "period": "2025-02-22",
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312525033393/d935582d8k.htm",
    "what_it_said": null,
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   {
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   {
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    "period": "2024-11-02",
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   {
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  ],
  "history": []
 },
 "market": {
  "rule": "Each figure is kept only where Massive and Yahoo agree on it to the cent; a figure they do not agree on is null. Dated, not live. The market value and the forward multiple are computed from the close.",
  "last_close": {
   "value": 575.25,
   "currency": "USD",
   "as_of": "2026-11-09",
   "providers": [
    "Massive",
    "Yahoo"
   ]
  },
  "day_range": {
   "low": 562.45,
   "high": 577.69,
   "currency": "USD",
   "as_of": "2026-11-09",
   "providers": [
    "Massive",
    "Yahoo"
   ]
  },
  "range_52_week": {
   "low": 464.01,
   "low_date": "2026-04-16",
   "high": 586.3,
   "high_date": "2026-11-05",
   "sessions": 251,
   "currency": "USD",
   "as_of": "2026-11-09",
   "providers": [
    "Massive",
    "Yahoo"
   ]
  },
  "market_value": {
   "value": 541586945,
   "currency": "USD",
   "as_of": "2026-11-09",
   "computed": "the last close times the shares outstanding on the filing cover",
   "shares": {
    "count": 941481,
    "as_of": "2011-04-29",
    "form": "10-Q",
    "filed": "2011-05-06",
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000115752311002891/"
   }
  },
  "forward_multiple": null,
  "checked_at": "2026-11-11 00:30:40"
 },
 "exhibits": null,
 "mentions": [],
 "note": "Prices on this page are dated market records, shown free during the preview, each confirmed by two independent data providers. None is a recommendation.",
 "license": "Free to cite with a link."
}