0000770540 2025-12-31 2025-12-31 0000770540 nft:S000006661Member 2025-12-31 2025-12-31 2026-05-01 <p style="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">The Fund defines a small-capitalization company to be one whose market capitalization, at the time of purchase, does not exceed the highest market capitalization of any company included in the Russell 2000^® Index during the preceding twelve months.</p> 497 N-1A 0000770540 false 2025-12-31 Natixis Funds Trust I