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Label Element Value
Prospectus [Line Items] rr_ProspectusLineItems  
Document Type dei_DocumentType 497
Document Period End Date dei_DocumentPeriodEndDate Jun. 30, 2018
Entity Registrant Name dei_EntityRegistrantName Investment Managers Series Trust
Entity Central Index Key dei_EntityCentralIndexKey 0001318342
Amendment Flag dei_AmendmentFlag false
Entity Inv Company Type dei_EntityInvCompanyType N-1A
Document Creation Date dei_DocumentCreationDate Jan. 30, 2019
Document Effective Date dei_DocumentEffectiveDate Jan. 30, 2019
Prospectus Date rr_ProspectusDate Nov. 01, 2018
AAM/HIMCO Short Duration Fund  
Prospectus [Line Items] rr_ProspectusLineItems  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock

AAM/HIMCO Short Duration Fund (the “Fund”)

Class A Shares (ASDAX)

Class C Shares (ASDCX)

Class I Shares (ASDIX)

 

A series of Investment Managers Series Trust

 

Supplement dated January 30, 2019, to the

Prospectus and Statement of Additional Information, each dated November 1, 2018, as supplemented;

and Summary Prospectus dated November 1, 2018.

 

Class C Shares Contingent Deferred Sales Charge

 

Effective immediately, all references to the Fund’s Class C Shares’ contingent deferred sales charge (“CDSC”) in the Fund’s Prospectus and Summary Prospectus are updated to reflect that the CDSC applies to Class C Shares sold within 12 months of the date of purchase.

 

Please file this Supplement with your records.