{
  "crd_number": 161163,
  "slug": "srb-corporation-boston-ma-161163",
  "primary_business_name": "SRB CORPORATION",
  "legal_name": "SRB CORPORATION",
  "dbas": [],
  "city": "Boston",
  "state": "MA",
  "country": "United States",
  "cbsa_code": "14460",
  "metro": {
    "cbsa_code": "14460",
    "common_name": "Boston",
    "msa_name": "Boston-Cambridge-Newton, MA-NH",
    "path": "/advisors/ma/boston"
  },
  "registration_type": "sec",
  "registration_status": "Approved",
  "registration_date": "2012-03-30",
  "years_registered": 14,
  "period": "2026-10-01",
  "filing_date": "2026-03-30",
  "carried_forward": false,
  "raum_total": 4821115000.0,
  "raum_discretionary": 4821115000.0,
  "raum_non_discretionary": 0.0,
  "raum_band": "1b_5b",
  "raum_band_label": "$1 billion to $5 billion",
  "total_employees": 4,
  "advisory_employees": 2,
  "client_count_bucket": "fewer_than_5_in_some_types",
  "clients_by_type": {
    "insurance_companies": {
      "raum": 4591814000.0,
      "count": 20
    },
    "corporations_other_businesses": {
      "raum": 229301000.0,
      "count": null,
      "fewer_than_5": true
    }
  },
  "compensation_types": [
    "percentage_of_aum"
  ],
  "advisory_activities": [
    "other"
  ],
  "wrap_fee_participant": false,
  "disclosure_yes_count": 0,
  "states_registered": [
    "MA"
  ],
  "websites": [],
  "iapd_url": "https://adviserinfo.sec.gov/firm/summary/161163",
  "city_as_filed": "BOSTON",
  "url": "https://advisorcensus.com/firm/srb-corporation-boston-ma-161163",
  "display_name": "SRB Corporation",
  "summary": "SRB Corporation is an SEC-registered investment advisory firm in Boston, MA, registered since 2012, reporting $1 billion to $5 billion in regulatory assets under management in its Form ADV filing dated March 30, 2026.",
  "citation": "AdvisorCensus. SRB Corporation (CRD 161163): Form ADV filing data as of October 2026.",
  "registration_type_label": "SEC-registered investment adviser",
  "compensation_labels": [
    "A percentage of assets under your management"
  ],
  "advisory_activity_labels": [
    "Other"
  ],
  "quick_answers": [
    {
      "q": "How is SRB Corporation compensated?",
      "a": "On its Form ADV (Item 5.E, October 2026), SRB Corporation reports these compensation arrangements: a percentage of assets under its management. The amounts are in Item 5 of its Form ADV Part 2A brochure."
    },
    {
      "q": "Where is SRB Corporation located?",
      "a": "SRB Corporation's principal office is in Boston, MA, according to its Form ADV."
    },
    {
      "q": "Is SRB Corporation registered with the SEC or a state?",
      "a": "SRB Corporation is an SEC-registered investment advisory firm, registered since 2012. Status as filed: Approved. CRD 161163."
    },
    {
      "q": "How much does SRB Corporation manage?",
      "a": "SRB Corporation reports $4,821,115,000 in regulatory assets under management in its Form ADV filing dated March 30, 2026 (100% discretionary)."
    },
    {
      "q": "How have SRB Corporation's assets and staff changed since 2021?",
      "a": "In the Form ADV data for SRB Corporation: Regulatory assets under management: $2,822,437,000 in the October 2021 data and $4,821,115,000 in the October 2026 data, up 71%. Total employees: 4 in October 2021 and 4 in October 2026. Assets under management move with markets as well as with clients coming and going."
    },
    {
      "q": "What types of clients does SRB Corporation serve?",
      "a": "By number of clients on Form ADV Item 5.D: insurance companies (20)."
    },
    {
      "q": "Which custodians does SRB Corporation use?",
      "a": "SRB Corporation's most recent Form ADV filing (Schedule D, Section 5.K(3)) lists Northern Trust as a custodian holding 10% or more of its separately managed account assets."
    },
    {
      "q": "Does SRB Corporation report any disciplinary disclosures?",
      "a": "Reports no disclosure items on Form ADV Item 11. The detail of any item is on the firm's SEC record: https://adviserinfo.sec.gov/firm/summary/161163"
    },
    {
      "q": "What changed in SRB Corporation's recent Form ADV filings?",
      "a": "In the April 2026 filing data: Regulatory assets under management went from $4,202,600,000 to $4,821,115,000 (+15%)."
    }
  ],
  "filing_history": [
    {
      "period": "2021-10-01",
      "regulatory_assets_under_management": 2822437000.0,
      "total_employees": 4,
      "filing_date": "2021-03-31"
    },
    {
      "period": "2022-10-01",
      "regulatory_assets_under_management": 3224282000.0,
      "total_employees": 4,
      "filing_date": "2022-03-31"
    },
    {
      "period": "2023-10-01",
      "regulatory_assets_under_management": 2665167000.0,
      "total_employees": 4,
      "filing_date": "2023-03-31"
    },
    {
      "period": "2024-10-01",
      "regulatory_assets_under_management": 3890087000.0,
      "total_employees": 4,
      "filing_date": "2024-03-29"
    },
    {
      "period": "2025-10-01",
      "regulatory_assets_under_management": 4202600000.0,
      "total_employees": 4,
      "filing_date": "2025-03-28"
    },
    {
      "period": "2026-10-01",
      "regulatory_assets_under_management": 4821115000.0,
      "total_employees": 4,
      "filing_date": "2026-03-30"
    }
  ],
  "recent_changes": [
    {
      "period": "2026-04-01",
      "period_label": "April 2026",
      "notes": [
        "Regulatory assets under management went from $4,202,600,000 to $4,821,115,000 (+15%)."
      ]
    }
  ],
  "fees_from_brochure": null,
  "custodians": [
    {
      "name": "Northern Trust",
      "name_as_filed": "NORTHERN TRUST",
      "affiliated": false
    }
  ],
  "custodians_note": "Custodians holding 10% or more of the firm's separately managed account assets, as filed on Form ADV (Schedule D, Section 5.K(3)). A custodian holds client assets; it does not endorse or supervise the firm. AdvisorCensus has no relationship with any custodian.",
  "markdown_url": "https://advisorcensus.com/firm/srb-corporation-boston-ma-161163.md",
  "clients": [
    {
      "type": "insurance_companies",
      "label": "Insurance companies",
      "count": 20,
      "fewer_than_5": false,
      "raum": 4591814000.0
    },
    {
      "type": "corporations_other_businesses",
      "label": "Corporations or other businesses not listed above",
      "count": null,
      "fewer_than_5": true,
      "raum": 229301000.0
    }
  ],
  "disclosure_line": "Reports no disclosure items on Form ADV Item 11.",
  "disclosure_items": [],
  "indexable": true,
  "suppressed": false,
  "claimed": false,
  "enhanced": false,
  "provided_by_the_firm": null,
  "source": {
    "name": "Form ADV",
    "as_of": "2026-10-01",
    "iapd_url": "https://adviserinfo.sec.gov/firm/summary/161163",
    "operator": "BH Monitor Services, LLC",
    "license": "https://creativecommons.org/licenses/by/4.0/",
    "credit": "AdvisorCensus (advisorcensus.com), from SEC Form ADV data"
  }
}
