{
 "schema": "theclaudetrader.research_packet.v1",
 "generated_at": "2026-10-31T18:13:02+00:00",
 "snapshot_date": "2026-10-31",
 "about": {
  "site": "The Claude Trader",
  "what_this_is": "Evidence-first research record built from SEC XBRL, SEC Form 4 and exchange prices. Deterministic rule scores with every input linked to its source. No recommendations. fair_value_model is a labelled model estimate from SEC filings, not a price target or recommendation (method: /fair-value).",
  "publishes": "Facts and their provenance only; no holdings, targets, estimates or recommendations.",
  "how_to_answer": [
   "State the snapshot date and each score's data_as_of.",
   "Quote scores with their status: ok = complete; partial / insufficient = a test was excluded because an input was absent or older than 550 days. Repeat each warning beside the number it affects; a 'stale' warning means the input was used but is older than 120 days (price: 7 days).",
   "Cite the source URL for any number you repeat.",
   "Say what is missing; never present holdings or targets as this site's (it has none).",
   "If asked for a shortlist or portfolio: build it from the user's horizon, risk, benchmark, exclusions and limits; cite inputs, explain inclusion and thesis risks; label weights as your synthesis, distinct from these deterministic scores; no promised outperformance or invented expected returns."
  ]
 },
 "company": {
  "ticker": "BRK-A",
  "name": "Berkshire Hathaway Inc",
  "legal_name": "BERKSHIRE HATHAWAY INC",
  "cik": "0001067983",
  "exchange": "NYSE",
  "industry": "Fire, Marine & Casualty Insurance",
  "sic": "6331",
  "fiscal_year_end": "1231",
  "is_financial": true,
  "is_utility": false
 },
 "price": {
  "value": 815600.0,
  "as_of": "2026-10-30",
  "source": "Alpaca Market Data (consolidated SIP daily bar)",
  "url": "https://docs.alpaca.markets/docs/historical-stock-data-1"
 },
 "market_cap": {
  "value": 1163975471541.0667,
  "as_of": "2026-10-30",
  "unit": "USD",
  "meaning": "price on the price date x latest reported point-in-time shares (see inputs.share_count_as_of)",
  "warning": null,
  "unavailable_reason": null,
  "inputs": {
   "traded_price": {
    "value": 815600.0,
    "as_of": "2026-10-30",
    "unit": "USD per traded unit (share or ADS)",
    "source": "Alpaca Market Data (consolidated SIP daily bar)",
    "url": "https://docs.alpaca.markets/docs/historical-stock-data-1"
   },
   "sec_shares_outstanding": {
    "value": 1427140.1073333332,
    "unit": "underlying shares",
    "concept": "SEC cover page 10-Q 0001193125-26-341032 (sum of classes (Common Class A [Member] 488,450 x 1; Common Class B [Member] 1,408,035,161 x 0.000666667; class economics verified in https://www.sec.gov/Archives/edgar/data/1067983/000119312526083899/brka-20251231.htm)); filing document https://www.sec.gov/Archives/edgar/data/1067983/000119312526341032/brka-20260630.htm",
    "period_end": "2026-07-29",
    "accession": "0001193125-26-341032",
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526341032/R1.htm"
   },
   "depositary_ratio": {
    "value": 1.0,
    "unit": "underlying shares per traded unit",
    "status": "domestic",
    "source": "10-K filer; SEC shares are the traded units",
    "evidence_url": null,
    "evidence_form": null,
    "evidence_filed": null,
    "body_snippet": null
   },
   "formula": "market_value = traded_price (price date) / depositary_ratio x latest point-in-time SEC shares outstanding (share-count date shown; from the filing cover page, summed across share classes only where the issuer filing verifies the classes are economically equivalent (rule + evidence URL in the source text), else withheld; priced at the primary listed class, so where other classes trade at a different price the value is an approximation; restated only for issuer-verified splits after the count date); weighted-average share counts are never used",
   "split_adjustment": null,
   "share_count_as_of": "2026-07-29",
   "share_count_age_days_at_price_date": 93,
   "warning": null,
   "computed": "815600.0 (price 2026-10-30) / 1 x 1,427,140 (shares at 2026-07-29) = 1,163,975,471,541"
  }
 },
 "scores": {
  "graham": {
   "score": null,
   "status": "not scored (financial)",
   "summary": "Not scored: not scored (financial).",
   "warnings": [],
   "components": []
  },
  "magic_formula": {
   "score": null,
   "status": "not scored",
   "summary": "Not scored: not scored.",
   "warnings": [],
   "components": []
  },
  "momentum": {
   "score": 66.5,
   "status": "ok",
   "complete": true,
   "passes_all": null,
   "summary": "Momentum: 66 of 100 (ok). 12-1 month return: 4.1 % \u2192 22.6/50; 6 month return: 14.6 % \u2192 14.1/20; Price / 52-week high: 0.992 \u2192 14.9/15; Volatility penalty (60d annualised): 13.7 % \u2192 14.8/15",
   "data_as_of": "2026-10-30",
   "history": [
    null,
    null
   ],
   "price_as_of": "2026-10-30",
   "coverage": null,
   "verification": null,
   "warnings": [],
   "components": [
    {
     "name": "12-1 month return",
     "value": 4.1,
     "unit": "%",
     "percentile": 45.3,
     "points": 22.6,
     "max": 50
    },
    {
     "name": "6 month return",
     "value": 14.6,
     "unit": "%",
     "percentile": 70.4,
     "points": 14.1,
     "max": 20
    },
    {
     "name": "Price / 52-week high",
     "value": 0.992,
     "points": 14.9,
     "max": 15
    },
    {
     "name": "Volatility penalty (60d annualised)",
     "value": 13.7,
     "unit": "%",
     "points": 14.8,
     "max": 15
    }
   ],
   "rules_url": "https://theclaudetrader.com/p/momentum"
  },
  "insider": {
   "score": 22.9,
   "status": "ok",
   "complete": true,
   "passes_all": null,
   "summary": "Insider: 23 of 100 (ok). Open-market buy value / market cap (percentile among buyers): 0.0 bp \u2192 4.2/35; Distinct buyers: 1 \u2192 6.2/25; Buyer seniority: 0.7 \u2192 14.0/20; Recency (half-life 30d): 0.16 \u2192 1.6/10; Sales penalty (excludes 10b5-1 plan sales): 0.17 bp \u2192 -3.2/0",
   "data_as_of": "2026-10-30",
   "history": [
    null,
    null
   ],
   "price_as_of": null,
   "coverage": {
    "window_start": "2026-08-02",
    "through": "2026-10-30",
    "missing_days": 1,
    "note": "Form 4 data loaded through 2026-10-30"
   },
   "verification": null,
   "warnings": [],
   "components": [
    {
     "name": "Open-market buy value / market cap (percentile among buyers)",
     "value": 0.0,
     "unit": "bp",
     "points": 4.2,
     "max": 35
    },
    {
     "name": "Distinct buyers",
     "value": 1,
     "points": 6.2,
     "max": 25
    },
    {
     "name": "Buyer seniority",
     "value": 0.7,
     "points": 14.0,
     "max": 20
    },
    {
     "name": "Recency (half-life 30d)",
     "value": 0.16,
     "points": 1.6,
     "max": 10
    },
    {
     "name": "Sales penalty (excludes 10b5-1 plan sales)",
     "value": 0.17,
     "unit": "bp",
     "points": -3.2,
     "max": 0
    }
   ],
   "rules_url": "https://theclaudetrader.com/p/insider"
  },
  "buffett": {
   "score": null,
   "status": "not scored (financial)",
   "summary": "Not scored: not scored (financial).",
   "warnings": [],
   "components": []
  },
  "lynch": {
   "score": null,
   "status": "not scored (financial)",
   "summary": "Not scored: not scored (financial).",
   "warnings": [],
   "components": []
  },
  "graham_enterprising": {
   "score": null,
   "status": "not scored (financial)",
   "summary": "Not scored: not scored (financial).",
   "warnings": [],
   "components": []
  },
  "piotroski": {
   "score": null,
   "status": "not scored (financial)",
   "summary": "Not scored: not scored (financial).",
   "warnings": [],
   "components": []
  }
 },
 "inputs_by_philosophy": {
  "graham": [],
  "magic_formula": [],
  "momentum": [
   {
    "name": "Adjusted close series (14 months)",
    "value": 815600.0,
    "kind": "price",
    "source": "Yahoo Finance / Alpaca Market Data daily history",
    "url": null,
    "period": "2026-10-30",
    "age_days": 1,
    "stale": false
   }
  ],
  "insider": [
   {
    "name": "Form 4 S Jain Ajit 2026-09-28",
    "value": 19972673.0,
    "shares": 39700.0,
    "price": 503.09,
    "role": "Chair",
    "period": "2026-09-28",
    "source": "SEC Form 4 (insider transactions data set)",
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000172845126000004/"
   },
   {
    "name": "Form 4 P O'Sullivan Michael J. 2026-08-12",
    "value": 205008.0,
    "shares": 400.0,
    "price": 512.52,
    "role": "officer",
    "period": "2026-08-12",
    "source": "SEC Form 4 (insider transactions data set)",
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526349574/"
   },
   {
    "name": "Form 4 P O'Sullivan Michael J. 2026-08-12",
    "value": 22085.23,
    "shares": 43.0,
    "price": 513.61,
    "role": "officer",
    "period": "2026-08-12",
    "source": "SEC Form 4 (insider transactions data set)",
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526349574/"
   },
   {
    "name": "Form 4 P O'Sullivan Michael J. 2026-08-12",
    "value": 22978.8,
    "shares": 45.0,
    "price": 510.64,
    "role": "officer",
    "period": "2026-08-12",
    "source": "SEC Form 4 (insider transactions data set)",
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526349574/"
   }
  ],
  "buffett": [],
  "lynch": [],
  "graham_enterprising": [],
  "piotroski": []
 },
 "earnings_record": {
  "net_income_by_fy": [
   {
    "fy": 2013,
    "period_end": "2013-12-31",
    "sec_frame": "CY2013",
    "value": 19476000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312516483023/",
    "accession": "0001193125-16-483023"
   },
   {
    "fy": 2014,
    "period_end": "2014-12-31",
    "sec_frame": "CY2014",
    "value": 19872000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312517056969/",
    "accession": "0001193125-17-056969"
   },
   {
    "fy": 2015,
    "period_end": "2015-12-31",
    "sec_frame": "CY2015",
    "value": 24083000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312518057033/",
    "accession": "0001193125-18-057033"
   },
   {
    "fy": 2016,
    "period_end": "2016-12-31",
    "sec_frame": "CY2016",
    "value": 24074000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312519048926/",
    "accession": "0001193125-19-048926"
   },
   {
    "fy": 2017,
    "period_end": "2017-12-31",
    "sec_frame": "CY2017",
    "value": 44940000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000156459020005874/",
    "accession": "0001564590-20-005874"
   },
   {
    "fy": 2018,
    "period_end": "2018-12-31",
    "sec_frame": "CY2018",
    "value": 4021000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000156459021009611/",
    "accession": "0001564590-21-009611"
   },
   {
    "fy": 2019,
    "period_end": "2019-12-31",
    "sec_frame": "CY2019",
    "value": 81417000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000156459022007322/",
    "accession": "0001564590-22-007322"
   },
   {
    "fy": 2020,
    "period_end": "2020-12-31",
    "sec_frame": "CY2020",
    "value": 42521000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000095017023004451/",
    "accession": "0000950170-23-004451"
   },
   {
    "fy": 2021,
    "period_end": "2021-12-31",
    "sec_frame": "CY2021",
    "value": 89937000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000095017024019719/",
    "accession": "0000950170-24-019719"
   },
   {
    "fy": 2022,
    "period_end": "2022-12-31",
    "sec_frame": "CY2022",
    "value": -22759000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000095017025025210/",
    "accession": "0000950170-25-025210"
   },
   {
    "fy": 2023,
    "period_end": "2023-12-31",
    "sec_frame": "CY2023",
    "value": 96223000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526083899/",
    "accession": "0001193125-26-083899"
   },
   {
    "fy": 2024,
    "period_end": "2024-12-31",
    "sec_frame": "CY2024",
    "value": 88995000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526083899/",
    "accession": "0001193125-26-083899"
   },
   {
    "fy": 2025,
    "period_end": "2025-12-31",
    "sec_frame": "CY2025",
    "value": 66968000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526083899/",
    "accession": "0001193125-26-083899"
   }
  ],
  "eps_diluted_by_fy": [],
  "revenue_by_fy": [
   {
    "fy": 2013,
    "period_end": "2013-12-31",
    "sec_frame": "CY2013",
    "value": 182150000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312516483023/",
    "accession": "0001193125-16-483023"
   },
   {
    "fy": 2014,
    "period_end": "2014-12-31",
    "sec_frame": "CY2014",
    "value": 194699000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312517056969/",
    "accession": "0001193125-17-056969"
   },
   {
    "fy": 2015,
    "period_end": "2015-12-31",
    "sec_frame": "CY2015",
    "value": 210943000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312518057033/",
    "accession": "0001193125-18-057033"
   },
   {
    "fy": 2016,
    "period_end": "2016-12-31",
    "sec_frame": "CY2016",
    "value": 215114000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312519048926/",
    "accession": "0001193125-19-048926"
   },
   {
    "fy": 2017,
    "period_end": "2017-12-31",
    "sec_frame": "CY2017",
    "value": 239933000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000156459020005874/",
    "accession": "0001564590-20-005874"
   },
   {
    "fy": 2018,
    "period_end": "2018-12-31",
    "sec_frame": "CY2018",
    "value": 247837000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000156459021009611/",
    "accession": "0001564590-21-009611"
   },
   {
    "fy": 2019,
    "period_end": "2019-12-31",
    "sec_frame": "CY2019",
    "value": 254616000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000156459022007322/",
    "accession": "0001564590-22-007322"
   },
   {
    "fy": 2020,
    "period_end": "2020-12-31",
    "sec_frame": "CY2020",
    "value": 245579000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000095017023004451/",
    "accession": "0000950170-23-004451"
   },
   {
    "fy": 2021,
    "period_end": "2021-12-31",
    "sec_frame": "CY2021",
    "value": 276185000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000095017024019719/",
    "accession": "0000950170-24-019719"
   },
   {
    "fy": 2022,
    "period_end": "2022-12-31",
    "sec_frame": "CY2022",
    "value": 302020000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000095017025025210/",
    "accession": "0000950170-25-025210"
   },
   {
    "fy": 2023,
    "period_end": "2023-12-31",
    "sec_frame": "CY2023",
    "value": 364482000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526083899/",
    "accession": "0001193125-26-083899"
   },
   {
    "fy": 2024,
    "period_end": "2024-12-31",
    "sec_frame": "CY2024",
    "value": 371433000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526083899/",
    "accession": "0001193125-26-083899"
   },
   {
    "fy": 2025,
    "period_end": "2025-12-31",
    "sec_frame": "CY2025",
    "value": 371444000000.0,
    "url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526083899/",
    "accession": "0001193125-26-083899"
   }
  ],
  "dividend_years": []
 },
 "insider_activity": {
  "coverage_through": "2026-10-30",
  "window_start": "2026-08-02",
  "missing_days": 1,
  "recent_transactions": [
   {
    "txn_date": "2026-09-28",
    "insider_name": "Jain Ajit",
    "role": "Chair",
    "code": "S",
    "shares": 39700.0,
    "price": 503.09,
    "value": 19972673.0,
    "is_10b5_1": 0,
    "source_url": "https://www.sec.gov/Archives/edgar/data/1067983/000172845126000004/"
   },
   {
    "txn_date": "2026-08-12",
    "insider_name": "O'Sullivan Michael J.",
    "role": "officer",
    "code": "P",
    "shares": 400.0,
    "price": 512.52,
    "value": 205008.0,
    "is_10b5_1": 0,
    "source_url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526349574/"
   },
   {
    "txn_date": "2026-08-12",
    "insider_name": "O'Sullivan Michael J.",
    "role": "officer",
    "code": "P",
    "shares": 43.0,
    "price": 513.61,
    "value": 22085.23,
    "is_10b5_1": 0,
    "source_url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526349574/"
   },
   {
    "txn_date": "2026-08-12",
    "insider_name": "O'Sullivan Michael J.",
    "role": "officer",
    "code": "P",
    "shares": 45.0,
    "price": 510.64,
    "value": 22978.8,
    "is_10b5_1": 0,
    "source_url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526349574/"
   },
   {
    "txn_date": "2026-05-06",
    "insider_name": "O'Sullivan Michael J.",
    "role": "officer",
    "code": "P",
    "shares": 53.0,
    "price": 470.22,
    "value": 24921.66,
    "is_10b5_1": 0,
    "source_url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526209661/"
   },
   {
    "txn_date": "2026-05-06",
    "insider_name": "O'Sullivan Michael J.",
    "role": "officer",
    "code": "P",
    "shares": 483.0,
    "price": 467.13,
    "value": 225623.79,
    "is_10b5_1": 0,
    "source_url": "https://www.sec.gov/Archives/edgar/data/1067983/000119312526209661/"
   }
  ]
 },
 "filings_and_news": {
  "sec_filing_index": "https://www.sec.gov/edgar/browse/?CIK=0001067983",
  "sec_8k": "https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001067983&type=8-K",
  "sec_form4": "https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001067983&type=4",
  "xbrl_companyfacts": "https://data.sec.gov/api/xbrl/companyfacts/CIK0001067983.json",
  "news_items": [],
  "note": "Press releases are filed as 8-K exhibits; the 8-K link lists them with dates."
 },
 "peer_context": {
  "graham": {
   "industry": "Fire, Marine & Casualty Insurance",
   "scored_peers": 0,
   "rank": null,
   "median": null
  },
  "magic_formula": {
   "industry": "Fire, Marine & Casualty Insurance",
   "scored_peers": 0,
   "rank": null,
   "median": null
  },
  "momentum": {
   "industry": "Fire, Marine & Casualty Insurance",
   "scored_peers": 12,
   "rank": 6,
   "median": 66.2,
   "top_peers": [
    {
     "ticker": "TRV",
     "score": 85.8
    },
    {
     "ticker": "EG",
     "score": 74.8
    },
    {
     "ticker": "CB",
     "score": 74.5
    },
    {
     "ticker": "ALL",
     "score": 70.1
    },
    {
     "ticker": "ACGL",
     "score": 66.7
    }
   ]
  },
  "insider": {
   "industry": "Fire, Marine & Casualty Insurance",
   "scored_peers": 12,
   "rank": 2,
   "median": 0.0,
   "top_peers": [
    {
     "ticker": "CINF",
     "score": 27.3
    },
    {
     "ticker": "BRK-A",
     "score": 22.9
    },
    {
     "ticker": "ACGL",
     "score": 0.0
    },
    {
     "ticker": "AIG",
     "score": 0.0
    },
    {
     "ticker": "ALL",
     "score": 0.0
    }
   ]
  },
  "buffett": {
   "industry": "Fire, Marine & Casualty Insurance",
   "scored_peers": 0,
   "rank": null,
   "median": null
  },
  "lynch": {
   "industry": "Fire, Marine & Casualty Insurance",
   "scored_peers": 0,
   "rank": null,
   "median": null
  },
  "graham_enterprising": {
   "industry": "Fire, Marine & Casualty Insurance",
   "scored_peers": 0,
   "rank": null,
   "median": null
  },
  "piotroski": {
   "industry": "Fire, Marine & Casualty Insurance",
   "scored_peers": 0,
   "rank": null,
   "median": null
  }
 },
 "dossier": null,
 "external_views_link_only": {
  "morningstar": "https://www.morningstar.com/search?query=BRK-A",
  "finviz": "https://finviz.com/quote.ashx?t=BRK-A",
  "stockanalysis": "https://stockanalysis.com/stocks/brk-a/",
  "seeking_alpha": "https://seekingalpha.com/symbol/BRK-A",
  "openinsider": "http://openinsider.com/search?q=BRK-A",
  "google_news": "https://news.google.com/rss/search?q=BRK-A+stock"
 },
 "limits": [
  "Graham Defensive: not scored (financial)",
  "Magic Formula: not scored",
  "Buffett Quality: not scored (financial)",
  "Lynch GARP: not scored (financial)",
  "Graham Enterprising: not scored (financial)",
  "Piotroski F-Score: not scored (financial)",
  "News is not collected for this ticker; use the SEC 8-K and press-release links below"
 ],
 "machine_readable": {
  "stock_json": "https://theclaudetrader.com/s/BRK-A.json",
  "stock_md": "https://theclaudetrader.com/s/BRK-A.md",
  "packet": "https://theclaudetrader.com/r/BRK-A.json",
  "grid": "https://theclaudetrader.com/grid.json",
  "openapi": "https://theclaudetrader.com/openapi.json",
  "index": "https://theclaudetrader.com/llms.txt"
 },
 "cite_as": "The Claude Trader snapshot 2026-10-31, https://theclaudetrader.com/s/BRK-A; data from SEC EDGAR XBRL and market prices (Alpaca Market Data, Yahoo Finance) to 2026-10-30.",
 "disclaimer": "Scores are deterministic rule outputs from public filings. fair_value_model is a labelled model estimate from the same filings (method at /fair-value), not an opinion or recommendation."
}