{"cik":"0002052411","entityType":"other","sic":"","sicDescription":"","ownerOrg":"","insiderTransactionForOwnerExists":0,"insiderTransactionForIssuerExists":1,"name":"FT Vest Total Return Income Fund: Series B1","tickers":[],"exchanges":[],"ein":"000000000","lei":null,"description":"","website":"","investorWebsite":"","category":"","fiscalYearEnd":"1231","stateOfIncorporation":"DE","stateOfIncorporationDescription":"DE","addresses":{"mailing":{"street1":"235 WEST GALENA","street2":null,"city":"MILWAUKEE","stateOrCountry":"WI","zipCode":"53212","stateOrCountryDescription":"WI","isForeignLocation":0,"foreignStateTerritory":null,"country":null,"countryCode":null},"business":{"street1":"235 WEST GALENA","street2":null,"city":"MILWAUKEE","stateOrCountry":"WI","zipCode":"53212","stateOrCountryDescription":"WI","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null}},"phone":"414-299-2270","flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0001104659-26-105320","0001193125-26-374087","0001104659-26-101649","0001104659-26-066272","0001193125-26-235866","0001193125-26-235864","0002052411-26-000002","0001104659-26-039065","0001104659-26-032491","0001193125-26-107894","0001104659-26-025265","0001193125-26-080044","0001193125-25-287445","0001104659-25-088143","0001145549-25-053524","0001104659-25-082275","0001104659-25-047368","0002052411-25-000001","0001604488-25-000103","0001732802-25-000004","0001732966-25-000003","0001213900-25-036951","0001213900-25-036941","0001104659-25-013047","0001104659-25-013025"],"filingDate":["2026-09-04","2026-08-28","2026-08-26","2026-05-26","2026-05-22","2026-05-22","2026-05-05","2026-04-02","2026-03-20","2026-03-16","2026-03-09","2026-02-27","2025-11-19","2025-09-08","2025-08-26","2025-08-25","2025-05-12","2025-05-06","2025-05-01","2025-05-01","2025-05-01","2025-04-29","2025-04-29","2025-02-13","2025-02-13"],"reportDate":["2026-06-30","2026-06-30","2026-06-30","","2026-03-31","2026-03-31","","","","2025-12-31","2025-12-31","2025-12-31","2025-09-30","2025-06-30","2025-06-30","2025-06-30","","","2025-04-25","2025-04-25","2025-04-25","2025-04-25","2025-04-25","",""],"acceptanceDateTime":["2026-09-04T14:06:01.000Z","2026-08-28T19:09:15.000Z","2026-08-26T21:23:44.000Z","2026-05-26T20:14:14.000Z","2026-05-22T15:24:24.000Z","2026-05-22T15:23:31.000Z","2026-05-05T20:02:06.000Z","2026-04-02T18:15:41.000Z","2026-03-20T13:48:06.000Z","2026-03-16T17:49:00.000Z","2026-03-09T20:31:40.000Z","2026-02-27T15:46:17.000Z","2025-11-19T16:11:44.000Z","2025-09-08T15:28:34.000Z","2025-08-26T16:13:54.000Z","2025-08-25T14:49:56.000Z","2025-05-12T21:08:13.000Z","2025-05-05T21:35:50.000Z","2025-05-01T21:20:18.000Z","2025-05-01T21:17:21.000Z","2025-05-01T21:09:41.000Z","2025-04-29T22:36:54.000Z","2025-04-29T22:04:43.000Z","2025-02-13T22:29:17.000Z","2025-02-13T22:14:54.000Z"],"act":["40","40","40","34","40","40","33","40","34","40","40","40","40","40","40","40","40","33","","","","","","40","40"],"form":["N-CSRS","NPORT-P","N-PX","SC TO-I/A","NPORT-P","NPORT-P","D/A","40-17G","SC TO-I","N-CEN","N-CSR","NPORT-P","NPORT-P","N-CSRS","NPORT-P","N-PX","40-17G","D","3","3","3","3","3","N-2","N-8A"],"fileNumber":["811-24054","811-24054","811-24054","005-95571","811-24054","811-24054","021-545269","811-24054","005-95571","811-24054","811-24054","811-24054","811-24054","811-24054","811-24054","811-24054","811-24054","021-545269","","","","","","811-24054","811-24054"],"filmNumber":["261360436","261338941","261324130","261019950","261011873","261011870","26942861","26832303","26776684","26755789","26735493","26694078","251497527","251299085","251254840","251248624","25935922","25914334","","","","","","25621801","25621601"],"items":["","","","","","","06c","","","","","","","","","","","06c","","","","","","",""],"core_type":["N-CSRS","NPORT-P","N-PX","SC TO-I/A","NPORT-P","NPORT-P","D/A","40-17G","SC TO-I","N-CEN","N-CSR","NPORT-P","NPORT-P","N-CSRS","NPORT-P","N-PX","40-17G","D","3","3","3","3","3","XBRL","N-8A"],"size":[1113753,284828,2247811,143632,696789,696789,15278,1036378,322628,31851,1304552,276412,603957,1049871,288716,17962,702079,13450,3788,3819,3896,8271,2826,4169503,11495],"isXBRL":[0,0,0,1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0],"isInlineXBRL":[0,0,0,1,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0],"isXBRLNumeric":[0,0,0,0,0,0,0,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null],"primaryDocument":["tm2621775d2_ncsrs.htm","xslFormNPORT-P_X01/primary_doc.xml","xslN-PX_X01/primary_doc.xml","tm2614647d1_sctoia.htm","xslFormNPORT-P_X01/primary_doc.xml","xslFormNPORT-P_X01/primary_doc.xml","xslFormDX01/primary_doc.xml","tm2610086d4_4017g.pdf","tm268598d1_sctoi.htm","xslFormN-CEN_X01/primary_doc.xml","tm266634d1_ncsr.htm","xslFormNPORT-P_X01/primary_doc.xml","xslFormNPORT-P_X01/primary_doc.xml","tm2521542d2_ncsrs.htm","xslFormNPORT-P_X01/primary_doc.xml","xslN-PX_X01/primary_doc.xml","tm2513919d2_4017g.pdf","xslFormDX01/primary_doc.xml","xslF345X02/primary_doc.xml","xslF345X02/primary_doc.xml","xslF345X02/primary_doc.xml","xslF345X02/ownership.xml","xslF345X02/ownership.xml","tm255960d1_n2.htm","tm255960d2_n8a.htm"],"primaryDocDescription":["N-CSRS","","","SC TO-I/A","","","","40-17G","SC TO-I","","N-CSR","","","N-CSRS","","","40-17G","","PRIMARY DOCUMENT","PRIMARY DOCUMENT","PRIMARY DOCUMENT","","","N-2","N-8A"]},"files":[]}}