{
  "crd_number": 155136,
  "slug": "ack-asset-management-llc-greenwich-ct-155136",
  "primary_business_name": "ACK ASSET MANAGEMENT LLC",
  "legal_name": "ACK ASSET MANAGEMENT LLC",
  "dbas": [],
  "city": "Greenwich",
  "state": "CT",
  "country": "United States",
  "cbsa_code": "14860",
  "metro": {
    "cbsa_code": "14860",
    "common_name": "Bridgeport",
    "msa_name": "Bridgeport-Stamford-Danbury, CT",
    "path": "/advisors/ct/bridgeport"
  },
  "registration_type": "sec",
  "registration_status": "Approved",
  "registration_date": "2010-09-21",
  "years_registered": 16,
  "period": "2026-10-01",
  "filing_date": "2026-03-13",
  "carried_forward": false,
  "raum_total": 1068346088.0,
  "raum_discretionary": 1068346088.0,
  "raum_non_discretionary": 0.0,
  "raum_band": "1b_5b",
  "raum_band_label": "$1 billion to $5 billion",
  "total_employees": 10,
  "advisory_employees": 6,
  "client_count_bucket": null,
  "clients_by_type": {
    "pooled_investment_vehicles": {
      "raum": 1068346088.0,
      "count": 2
    }
  },
  "compensation_types": [
    "percentage_of_aum",
    "performance_based"
  ],
  "advisory_activities": [
    "portfolio_management_pooled_vehicles"
  ],
  "wrap_fee_participant": false,
  "disclosure_yes_count": 0,
  "states_registered": [
    "CT",
    "NY"
  ],
  "websites": [
    "https://ackasset.com",
    "https://linkedin.com/company/ack-asset-management-llc/about"
  ],
  "iapd_url": "https://adviserinfo.sec.gov/firm/summary/155136",
  "city_as_filed": "GREENWICH",
  "url": "https://advisorcensus.com/firm/ack-asset-management-llc-greenwich-ct-155136",
  "display_name": "ACK Asset Management LLC",
  "summary": "ACK Asset Management LLC is an SEC-registered investment advisory firm in Greenwich, CT, registered since 2010, reporting $1 billion to $5 billion in regulatory assets under management in its Form ADV filing dated March 13, 2026.",
  "citation": "AdvisorCensus. ACK Asset Management LLC (CRD 155136): Form ADV filing data as of October 2026.",
  "registration_type_label": "SEC-registered investment adviser",
  "compensation_labels": [
    "A percentage of assets under your management",
    "Performance-based fees"
  ],
  "advisory_activity_labels": [
    "Portfolio management for pooled investment vehicles (other than investment companies)"
  ],
  "quick_answers": [
    {
      "q": "How is ACK Asset Management LLC compensated?",
      "a": "On its Form ADV (Item 5.E, October 2026), ACK Asset Management LLC reports these compensation arrangements: a percentage of assets under its management; performance-based fees."
    },
    {
      "q": "How much does ACK Asset Management LLC charge?",
      "a": "Its Form ADV Part 2A brochure dated March 13, 2026 states: Asset-based fee: 1% to 1.5% a year (a range, as the brochure states it). Fees can differ by service and may be negotiable; the brochure is the complete statement."
    },
    {
      "q": "Where is ACK Asset Management LLC located?",
      "a": "ACK Asset Management LLC's principal office is in Greenwich, CT, according to its Form ADV; the April 2026 filing also lists 1 other office (Schedule D, Section 1.F)."
    },
    {
      "q": "Is ACK Asset Management LLC registered with the SEC or a state?",
      "a": "ACK Asset Management LLC is an SEC-registered investment advisory firm, registered since 2010. Status as filed: Approved. CRD 155136."
    },
    {
      "q": "How much does ACK Asset Management LLC manage?",
      "a": "ACK Asset Management LLC reports $1,068,346,088 in regulatory assets under management in its Form ADV filing dated March 13, 2026 (100% discretionary)."
    },
    {
      "q": "How have ACK Asset Management LLC's assets and staff changed since 2021?",
      "a": "In the Form ADV data for ACK Asset Management LLC: Regulatory assets under management: $496,480,175 in the October 2021 data and $1,068,346,088 in the October 2026 data, up 115%. Total employees: 6 in October 2021 and 10 in October 2026. Assets under management move with markets as well as with clients coming and going."
    },
    {
      "q": "What types of clients does ACK Asset Management LLC serve?",
      "a": "By number of clients on Form ADV Item 5.D: pooled investment vehicles (other than investment companies and business development companies) (2)."
    },
    {
      "q": "Does ACK Asset Management LLC 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/155136"
    },
    {
      "q": "Does ACK Asset Management LLC state an account minimum?",
      "a": "Its Form ADV Part 2A brochure dated March 13, 2026 says: \"The minimum investment amount in the Private Funds is $500,000. The minimum investment amount may be waived by the General Partner or Adviser and has been so waived for certain investors.\""
    },
    {
      "q": "What changed in ACK Asset Management LLC's recent Form ADV filings?",
      "a": "In the April 2026 filing data: Regulatory assets under management went from $949,118,501 to $1,068,346,088 (+13%)."
    }
  ],
  "filing_history": [
    {
      "period": "2021-10-01",
      "regulatory_assets_under_management": 496480175.0,
      "total_employees": 6,
      "filing_date": "2021-03-18"
    },
    {
      "period": "2022-10-01",
      "regulatory_assets_under_management": 794528939.0,
      "total_employees": 10,
      "filing_date": "2022-09-21"
    },
    {
      "period": "2023-10-01",
      "regulatory_assets_under_management": 709883000.0,
      "total_employees": 10,
      "filing_date": "2023-03-29"
    },
    {
      "period": "2024-10-01",
      "regulatory_assets_under_management": 1099860395.0,
      "total_employees": 11,
      "filing_date": "2024-03-06"
    },
    {
      "period": "2025-10-01",
      "regulatory_assets_under_management": 949118501.0,
      "total_employees": 10,
      "filing_date": "2025-03-19"
    },
    {
      "period": "2026-10-01",
      "regulatory_assets_under_management": 1068346088.0,
      "total_employees": 10,
      "filing_date": "2026-03-13"
    }
  ],
  "recent_changes": [
    {
      "period": "2026-04-01",
      "period_label": "April 2026",
      "notes": [
        "Regulatory assets under management went from $949,118,501 to $1,068,346,088 (+13%)."
      ]
    }
  ],
  "fees_from_brochure": {
    "source": "Form ADV Part 2A brochure dated March 13, 2026",
    "provided_by_the_firm": false,
    "tiers": [],
    "flat_rate": null,
    "stated_range": "1% to 1.5% a year",
    "stated_maximum": null,
    "account_minimum": "$500,000",
    "account_minimum_may_be_waived": true,
    "minimum_annual_fee": null,
    "planning_fees": [],
    "figures": [
      {
        "label": "Asset-based fee",
        "statements": [
          "Asset-based fee: 1% to 1.5% a year (a range, as the brochure states it)"
        ],
        "quotes": [
          "ACK typically charges investors in the Private Funds a management fee that ranges between 1.00% and 1.50% per annuum of the assets under management depending on when investors initially invested in a respective Private Fund"
        ]
      },
      {
        "label": "Account minimum",
        "statements": [
          "Account minimum: $500,000 (the brochure says it may be waived or negotiated)"
        ],
        "quotes": [
          "The minimum investment amount in the Private Funds is $500,000. The minimum investment amount may be waived by the General Partner or Adviser and has been so waived for certain investors."
        ]
      }
    ],
    "values": {
      "tiers": [],
      "range_pct": [
        1.0,
        1.5
      ],
      "max_pct": null,
      "account_minimum": 500000.0,
      "minimum_annual_fee": null,
      "planning": []
    },
    "quotes": [
      "ACK typically charges investors in the Private Funds a management fee that ranges between 1.00% and 1.50% per annuum of the assets under management depending on when investors initially invested in a respective Private Fund",
      "The minimum investment amount in the Private Funds is $500,000. The minimum investment amount may be waived by the General Partner or Adviser and has been so waived for certain investors."
    ],
    "note": "As stated in the firm's brochure; fees can differ by service and may be negotiable."
  },
  "custodians": [],
  "custodians_note": null,
  "markdown_url": "https://advisorcensus.com/firm/ack-asset-management-llc-greenwich-ct-155136.md",
  "clients": [
    {
      "type": "pooled_investment_vehicles",
      "label": "Pooled investment vehicles (other than investment companies and business development companies)",
      "count": 2,
      "fewer_than_5": false,
      "raum": 1068346088.0
    }
  ],
  "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/155136",
    "operator": "BH Monitor Services, LLC",
    "license": "https://creativecommons.org/licenses/by/4.0/",
    "credit": "AdvisorCensus (advisorcensus.com), from SEC Form ADV data"
  }
}