{"filing":{"accession_number":"0001628280-26-036160","cik":"0001748824","ticker":"AAMI","company_name":"Acadian Asset Management Inc.","form":"8-K","filing_date":"2026-05-19","report_date":null,"primary_document":"aami-20260519.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/1748824/000162828026036160/aami-20260519.htm"},"events":[{"id":10214,"run_id":8958,"accession_number":"0001628280-26-036160","anchor_item_number":"7.01","event_type":"other_material","event_domain":"catchall","is_material":true,"confidence":0.65,"summary":"The disclosure announces preliminary assets under management of approximately $219 billion as of April 30, 2026, in connection with an Investor Forum presentation. While this is a material business metric for an asset management company that would inform investor assessment of the registrant's scale and performance, it does not fit neatly into the standard 8-K event taxonomy (not earnings, M\u0026A, executive changes, impairment, or other specific categories). The Item 7.01 Regulation FD Disclosure classification and the furnishing-only status suggest this is investor-facing information that, while material, is presented as a routine disclosure rather than a triggering event.","company_name":"Acadian Asset Management Inc.","ticker":"AAMI","filing_date":"2026-05-19","form":"8-K","submitted_at":null,"items":[{"id":334,"accession_number":"0001628280-26-036160","item_number":"7.01","item_title":"Regulation FD Disclosure.","event_type":"other_material","event_domain":"catchall","is_material":true,"confidence":0.65,"reasoning":"The disclosure announces preliminary assets under management of approximately $219 billion as of April 30, 2026, in connection with an Investor Forum presentation. While this is a material business metric for an asset management company that would inform investor assessment of the registrant's scale and performance, it does not fit neatly into the standard 8-K event taxonomy (not earnings, M\u0026A, executive changes, impairment, or other specific categories). The Item 7.01 Regulation FD Disclosure classification and the furnishing-only status suggest this is investor-facing information that, while material, is presented as a routine disclosure rather than a triggering event.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-05-20T02:44:01.682726+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":334,"accession_number":"0001628280-26-036160","item_number":"7.01","item_title":"Regulation FD Disclosure.","event_type":"other_material","event_domain":"catchall","is_material":true,"confidence":0.65,"reasoning":"The disclosure announces preliminary assets under management of approximately $219 billion as of April 30, 2026, in connection with an Investor Forum presentation. While this is a material business metric for an asset management company that would inform investor assessment of the registrant's scale and performance, it does not fit neatly into the standard 8-K event taxonomy (not earnings, M\u0026A, executive changes, impairment, or other specific categories). The Item 7.01 Regulation FD Disclosure classification and the furnishing-only status suggest this is investor-facing information that, while material, is presented as a routine disclosure rather than a triggering event.","classifier_version":"claude-haiku-4-5-20251001+prompt-9e0ffca5","taxonomy_version":"v1","classified_at":"2026-05-20T02:44:01.682726+00:00","company_name":"Acadian Asset Management Inc.","ticker":"AAMI","filing_date":"2026-05-19"}]}