{
 "as_of": "2026-11-08",
 "cmr": "us-cm-kg/NYSE/AMTM",
 "fence": "The page is the record's research on the issuer — no analyst, no rating, no view.",
 "markdown": "The page is the record's research on the issuer — no analyst, no rating, no view.\n\n# Amentum Holdings, Inc. (NYSE: AMTM) — research page\n\nAs of 2026-11-08 · us-cm-kg · record version 1\n\n## Identity and listing\n\nThe issuer is Amentum Holdings, Inc., listed on the NYSE under ticker AMTM, with ISIN US0239391016 and LEI 2549009FJIBLW40CU216. Its security type is Corporate and its sector is 7389 Services-Business Services, NEC. Its jurisdiction is the United States, Delaware. Its segment is not on the record. Its listing status is listed, not halted.\n\n## The disclosure read\n\nThe record holds 55 filings in the twelve months to 2026-11-08, across 23 filing days. The median gap between filing days is 8.5 days. The record holds 37 days from the latest filing to the record date. The NYSE median gap between filing days is 6.0 days, with a median of 64.0 filings and a median latency of 4.0 days. The sector median gap is 5 days, with a median of 70 filings and a median latency of 4 days. The latest filing is dated 2026-10-02 and is of type director_change.\n\n## Auditor\n\nThe auditor of record is Ernst & Young LLP, located in Tysons, Virginia. The record holds no auditor changes.\n\n## Events and halts\n\nThe record holds no listing, delisting or name change lines. The domicile change is not on the record, as EDGAR states no dated change of state of incorporation on a filing line. The segment move is not on the record, as the exchanges' tier transfers are not EDGAR filings. The halt flag reads listed, not halted.\n\n## Orderability\n\nThe outcome is not determinable. The chapter's orderability section carries no client categories, so the outcome cannot name its client category. The rule version is acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1, and the chapter is as of 2026-11-04.\n\n## Coverage\n\nNo research houses were found on the issuer's investor-relations page.\n\n## Open research\n\nNo openly published research notes were found.\n\n## Licensed\n\nLicensed research: none loaded. A licensed row is served only to an agent whose firm holds that licence (licensor, entitlement). No licensed row is loaded.\n\n## As-of depth\n\nThe issuer is held in sealed years 2024, 2025 and 2026. The market's vintage is sealed, with the earliest sealed date 2021-01-04. The live record began on 2026-09-12.\n\n## Sources\n\n9 source pages are named on this page; every value above carries its own source page and read date in the numbers.\n\n- https://www.sec.gov/files/company_tickers_exchange.json (identity.exchange)\n- https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data (identity.isin)\n- https://data.sec.gov/submissions/CIK0002011286.json (identity.jurisdiction)\n- https://api.gleif.org/api/v1/lei-records/2549009FJIBLW40CU216 (identity.lei)\n- https://mcp.us-cm-kg.ai/events/NYSE/AMTM (the disclosure lines)\n- https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts (the halt flag)\n- https://www.sec.gov/Archives/edgar/data/2011286/000162828025053993/amtm-20251003.htm (the auditor)\n- https://mcp.us-cm-kg.ai/book/aio.json (the orderability chapter)\n- https://mcp.us-cm-kg.ai/record/NYSE/AMTM (the record)\n",
 "market": "US",
 "node": "us-cm-kg",
 "numbers": {
  "as_of_depth": {
   "issuer_years_sealed": [
    "2024",
    "2025",
    "2026"
   ],
   "live_record_began": "2026-09-12",
   "node_history_from": "2021-01-04",
   "node_years_sealed": [
    "2021",
    "2022",
    "2023",
    "2024",
    "2025",
    "2026"
   ],
   "record_version": 1,
   "sealed": true
  },
  "auditor": {
   "auditor": {
    "read_by": "EDGAR 10-K cover page iXBRL tag (dei:AuditorName, dei:AuditorLocation, dei:AuditorFirmId, dei:DocumentPeriodEndDate)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://www.sec.gov/Archives/edgar/data/2011286/000162828025053993/amtm-20251003.htm",
    "state": "sourced",
    "value": "Ernst & Young LLP"
   },
   "auditor_firm_id": {
    "read_by": "EDGAR 10-K cover page iXBRL tag (dei:AuditorName, dei:AuditorLocation, dei:AuditorFirmId, dei:DocumentPeriodEndDate)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://www.sec.gov/Archives/edgar/data/2011286/000162828025053993/amtm-20251003.htm",
    "state": "sourced",
    "value": "42"
   },
   "auditor_location": {
    "read_by": "EDGAR 10-K cover page iXBRL tag (dei:AuditorName, dei:AuditorLocation, dei:AuditorFirmId, dei:DocumentPeriodEndDate)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://www.sec.gov/Archives/edgar/data/2011286/000162828025053993/amtm-20251003.htm",
    "state": "sourced",
    "value": "Tysons, Virginia"
   },
   "changes": []
  },
  "cmr": "us-cm-kg/NYSE/AMTM",
  "coverage": {
   "count": 0,
   "houses": [],
   "pages_checked": [],
   "read_by": "Perplexity sonar (search) · page read by this rail",
   "read_date": "2026-11-11",
   "since": null,
   "state": "none_found"
  },
  "disclosure": {
   "against": {
    "exchange": {
     "issuers": 3256,
     "median_cadence_gap_days": 6,
     "median_filings": 64,
     "median_latency_days": 4,
     "name": "NYSE"
    },
    "sector": {
     "issuers": 117,
     "median_cadence_gap_days": 5,
     "median_filings": 70,
     "median_latency_days": 4,
     "name": "7389 Services-Business Services, NEC"
    }
   },
   "by_type": {
    "agm_egm": 3,
    "corporate_news": 1,
    "director_change": 1,
    "directors_dealings": 38,
    "regulatory_filing": 4,
    "results": 8
   },
   "cadence_median_gap_days": 8.5,
   "filing_days": 23,
   "filings": 55,
   "latency_days": 37,
   "latest": [
    {
     "category": "8-K",
     "date": "2026-10-02",
     "source": "https://www.sec.gov/Archives/edgar/data/2011286/000201128626000026/amtm-20260928.htm",
     "title": "8-K — 8-K (items 5.02,9.01)",
     "type": "director_change"
    },
    {
     "category": "4",
     "date": "2026-09-17",
     "source": "https://www.sec.gov/Archives/edgar/data/2011286/000148341026000005/xslF345X06/wk-form4_1789695352.xml",
     "title": "4 — FORM 4",
     "type": "directors_dealings"
    },
    {
     "category": "10-Q",
     "date": "2026-08-11",
     "source": "https://www.sec.gov/Archives/edgar/data/2011286/000162828026055727/amtm-20260703.htm",
     "title": "10-Q — FORM 10-Q",
     "type": "results"
    },
    {
     "category": "8-K",
     "date": "2026-08-10",
     "source": "https://www.sec.gov/Archives/edgar/data/2011286/000162828026055294/amtm-20260810.htm",
     "title": "8-K — FORM 8-K (items 2.02,9.01)",
     "type": "results"
    },
    {
     "category": "SCHEDULE 13G",
     "date": "2026-08-06",
     "source": "https://www.sec.gov/Archives/edgar/data/2011286/000076321226000027/xslSCHEDULE_13G_X02/primary_doc.xml",
     "title": "SCHEDULE 13G",
     "type": "regulatory_filing"
    }
   ],
   "latest_filing_date": "2026-10-02",
   "read": "the node's event lines (list_events_since), as get_filings serves them",
   "source": "https://mcp.us-cm-kg.ai/events/NYSE/AMTM",
   "window": {
    "from": "2025-11-08",
    "to": "2026-11-08"
   }
  },
  "identity": {
   "exchange": {
    "read_by": "EDGAR company_tickers_exchange.json (SEC list of exchange-listed filers)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://www.sec.gov/files/company_tickers_exchange.json",
    "state": "sourced",
    "value": "NYSE"
   },
   "isin": {
    "read_by": "SEC Fails-to-Deliver data (CUSIP for the symbol) · ISIN = US + CUSIP + ISO 6166 check digit",
    "read_date": "2026-10-09",
    "read_date_basis": "last_seen",
    "source": "https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data",
    "state": "sourced",
    "value": "US0239391016"
   },
   "jurisdiction": {
    "read_by": "EDGAR submissions API (issuer header as filed) (stateOfIncorporation)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://data.sec.gov/submissions/CIK0002011286.json",
    "state": "sourced",
    "value": "United States — Delaware"
   },
   "lei": {
    "read_by": "GLEIF name-exact (jurisdiction US-DE; GLEIF golden copy 2026-09-12)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://api.gleif.org/api/v1/lei-records/2549009FJIBLW40CU216",
    "state": "filled",
    "value": "2549009FJIBLW40CU216"
   },
   "name": {
    "read_by": "EDGAR submissions API (issuer header as filed)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://data.sec.gov/submissions/CIK0002011286.json",
    "state": "sourced",
    "value": "Amentum Holdings, Inc."
   },
   "sector": {
    "read_by": "EDGAR submissions API (issuer header as filed) (SIC code as assigned by the SEC)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://data.sec.gov/submissions/CIK0002011286.json",
    "state": "sourced",
    "value": "7389 Services-Business Services, NEC"
   },
   "security_type": {
    "read_by": "EDGAR submissions API (issuer header as filed)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://data.sec.gov/submissions/CIK0002011286.json",
    "state": "sourced",
    "value": "Corporate"
   },
   "segment": {
    "market": "US",
    "state": "not_on_record"
   },
   "ticker": {
    "read_by": "EDGAR company_tickers_exchange.json (SEC list of exchange-listed filers)",
    "read_date": "2026-11-08",
    "read_date_basis": "the record version as_of",
    "source": "https://www.sec.gov/files/company_tickers_exchange.json",
    "state": "sourced",
    "value": "AMTM"
   },
   "website": {
    "market": "US",
    "state": "not_on_record"
   }
  },
  "licensed": {
   "columns": [
    "licensor",
    "entitlement",
    "title",
    "date",
    "source"
   ],
   "rows": [],
   "rule": "A licensed row is served only to an agent whose firm holds that licence (licensor, entitlement). No licensed row is loaded."
  },
  "lifecycle": {
   "delisting": [],
   "domicile_change": {
    "market": "US",
    "reason": "EDGAR states no dated change of state of incorporation on a filing line",
    "state": "not_on_record"
   },
   "listing": [],
   "name_change": [],
   "segment_move": {
    "market": "US",
    "reason": "the exchanges' tier transfers are not EDGAR filings",
    "state": "not_on_record"
   }
  },
  "market": "US",
  "node": "us-cm-kg",
  "numbers_hash": "sha256:a07358f95b6170bab85c226cef6c187d822953326be35d728742ceb665e51947",
  "open_research": {
   "read_date": "2026-11-11",
   "rows": [],
   "state": "none_found"
  },
  "orderability": {
   "chapter_as_of": "2026-11-04",
   "client_categories": [],
   "determinable": false,
   "read": {
    "chapter": "https://mcp.us-cm-kg.ai/book/aio.json",
    "door": "https://mcp.us-cm-kg.ai/mcp",
    "tool": "get_orderability"
   },
   "reason": "the chapter's orderability section carries no client_categories: the outcome cannot name its client category",
   "rule_version": "acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1",
   "section": "us.aio.v8"
  },
  "record": {
   "as_of": "2026-11-08",
   "url": "https://mcp.us-cm-kg.ai/record/NYSE/AMTM",
   "version": 1
  },
  "schema": "research-numbers v0.1 (USR-01, 2026-11-11)",
  "status": {
   "read_date": "2026-11-08",
   "source": "https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts",
   "value": "listed, not halted"
  }
 },
 "numbers_hash": "sha256:a07358f95b6170bab85c226cef6c187d822953326be35d728742ceb665e51947",
 "path": "/us/NYSE/AMTM",
 "schema": "research-page v0.1 (USR-02, 2026-11-11)",
 "sections": [
  {
   "id": "identity",
   "text": "The issuer is Amentum Holdings, Inc., listed on the NYSE under ticker AMTM, with ISIN US0239391016 and LEI 2549009FJIBLW40CU216. Its security type is Corporate and its sector is 7389 Services-Business Services, NEC. Its jurisdiction is the United States, Delaware. Its segment is not on the record. Its listing status is listed, not halted.",
   "title": "Identity and listing"
  },
  {
   "id": "disclosure",
   "text": "The record holds 55 filings in the twelve months to 2026-11-08, across 23 filing days. The median gap between filing days is 8.5 days. The record holds 37 days from the latest filing to the record date. The NYSE median gap between filing days is 6.0 days, with a median of 64.0 filings and a median latency of 4.0 days. The sector median gap is 5 days, with a median of 70 filings and a median latency of 4 days. The latest filing is dated 2026-10-02 and is of type director_change.",
   "title": "The disclosure read"
  },
  {
   "id": "auditor",
   "text": "The auditor of record is Ernst & Young LLP, located in Tysons, Virginia. The record holds no auditor changes.",
   "title": "Auditor"
  },
  {
   "id": "events",
   "text": "The record holds no listing, delisting or name change lines. The domicile change is not on the record, as EDGAR states no dated change of state of incorporation on a filing line. The segment move is not on the record, as the exchanges' tier transfers are not EDGAR filings. The halt flag reads listed, not halted.",
   "title": "Events and halts"
  },
  {
   "id": "orderability",
   "text": "The outcome is not determinable. The chapter's orderability section carries no client categories, so the outcome cannot name its client category. The rule version is acm-68000/us/reasonable-basis-suitability-finra-rule-2111/r1, and the chapter is as of 2026-11-04.",
   "title": "Orderability"
  },
  {
   "id": "coverage",
   "text": "No research houses were found on the issuer's investor-relations page.",
   "title": "Coverage"
  },
  {
   "id": "open_research",
   "text": "No openly published research notes were found.",
   "title": "Open research"
  },
  {
   "id": "licensed",
   "text": "Licensed research: none loaded. A licensed row is served only to an agent whose firm holds that licence (licensor, entitlement). No licensed row is loaded.",
   "title": "Licensed"
  },
  {
   "id": "depth",
   "text": "The issuer is held in sealed years 2024, 2025 and 2026. The market's vintage is sealed, with the earliest sealed date 2021-01-04. The live record began on 2026-09-12.",
   "title": "As-of depth"
  },
  {
   "id": "sources",
   "text": "9 source pages are named on this page; every value above carries its own source page and read date in the numbers.",
   "title": "Sources"
  }
 ],
 "sources": [
  {
   "for": "identity.exchange",
   "source": "https://www.sec.gov/files/company_tickers_exchange.json"
  },
  {
   "for": "identity.isin",
   "source": "https://www.sec.gov/data-research/sec-markets-data/fails-deliver-data"
  },
  {
   "for": "identity.jurisdiction",
   "source": "https://data.sec.gov/submissions/CIK0002011286.json"
  },
  {
   "for": "identity.lei",
   "source": "https://api.gleif.org/api/v1/lei-records/2549009FJIBLW40CU216"
  },
  {
   "for": "the disclosure lines",
   "source": "https://mcp.us-cm-kg.ai/events/NYSE/AMTM"
  },
  {
   "for": "the halt flag",
   "source": "https://www.nasdaqtrader.com/rss.aspx?feed=tradehalts"
  },
  {
   "for": "the auditor",
   "source": "https://www.sec.gov/Archives/edgar/data/2011286/000162828025053993/amtm-20251003.htm"
  },
  {
   "for": "the orderability chapter",
   "source": "https://mcp.us-cm-kg.ai/book/aio.json"
  },
  {
   "for": "the record",
   "source": "https://mcp.us-cm-kg.ai/record/NYSE/AMTM"
  }
 ],
 "title": "Amentum Holdings, Inc. (AMTM) — research page",
 "writer": {
  "by": "Claude through the platform account, Haiku class; one pass; checked against the numbers",
  "engine": "claude-haiku-5-5"
 }
}