{"cik":"0001647251","entityType":"other","sic":"","sicDescription":"","ownerOrg":"","insiderTransactionForOwnerExists":1,"insiderTransactionForIssuerExists":0,"name":"TCI Fund Management Ltd","tickers":[],"exchanges":[],"ein":"000000000","lei":null,"description":"","website":"","investorWebsite":"","category":"","fiscalYearEnd":"1231","stateOfIncorporation":"X0","stateOfIncorporationDescription":"United Kingdom","addresses":{"mailing":{"street1":"7 CLIFFORD STREET","street2":null,"city":"LONDON","stateOrCountry":"X0","zipCode":"W1S2FT","stateOrCountryDescription":"United Kingdom","isForeignLocation":0,"foreignStateTerritory":null,"country":null,"countryCode":null},"business":{"street1":"7 CLIFFORD STREET","street2":null,"city":"LONDON","stateOrCountry":"X0","zipCode":"W1S2FT","stateOrCountryDescription":"United Kingdom","isForeignLocation":null,"foreignStateTerritory":null,"country":null,"countryCode":null}},"phone":"02074402330","flags":"","formerNames":[],"filings":{"recent":{"accessionNumber":["0001647251-26-000004","0000902664-26-002468","0001647251-26-000002","0001647251-25-000014","0001647251-25-000012","0001647251-25-000009","0001647251-25-000005","0000902664-25-002033","0001647251-25-000003","0001647251-24-000011","0000902664-24-006201","0001647251-24-000009","0001647251-24-000007","0001647251-24-000004","0000902664-24-001653","0000902664-24-001652","0001647251-24-000002","0000902664-23-005905","0001647251-23-000012","0000902664-23-005418","0001647251-23-000010","0001647251-23-000007","0000902664-23-001686","0000902664-23-001680","0000902664-23-001673","0001647251-23-000005","0001647251-22-000008","0001647251-22-000006","0001647251-22-000004","0000902664-22-001642","0000902664-22-001640","0000902664-22-001638","0001647251-22-000002","0000902664-22-000582","0001647251-21-000010","0000902664-21-004535","0000902664-21-004361","0000902664-21-004238","0000902664-21-004191","0000902664-21-004122","0000902664-21-004084","0000902664-21-004063","0001647251-21-000008","0000902664-21-003768","0001647251-21-000005","0000902664-21-002074","0001647251-21-000002","0000902664-21-001370","0000902664-21-001365","0000902664-21-001363","0000902664-21-001361","0001647251-20-000008","0001647251-20-000006","0001647251-20-000004","0001647251-20-000002","0000902664-20-001103","0000902664-20-001101","0000902664-20-001097","0001647251-19-000008","0000902664-19-003602","0001647251-19-000006","0000902664-19-002858","0001647251-19-000004","0001647251-19-000002","0000902664-19-001021","0000902664-19-001020","0001647251-18-000008","0001647251-18-000006","0000902664-18-002803","0000902664-18-002741","0000902664-18-002703","0001647251-18-000004","0000902664-18-001639","0001647251-18-000002","0000902664-18-000335","0000902664-18-000334","0000902664-17-004443","0001647251-17-000012","0001647251-17-000009","0001647251-17-000007","0000902664-17-001921","0000902664-17-001166","0001647251-17-000004","0001647251-16-000020","0001647251-16-000017","0001647251-16-000013","0000902664-16-005581","0001647251-16-000011","0001647251-15-000009","0001362598-15-000006"],"filingDate":["2026-05-15","2026-05-15","2026-02-17","2025-11-14","2025-08-29","2025-08-14","2025-05-15","2025-04-30","2025-02-14","2024-11-14","2024-11-04","2024-08-29","2024-08-14","2024-05-15","2024-02-14","2024-02-14","2024-02-14","2023-12-18","2023-11-14","2023-11-09","2023-08-14","2023-05-15","2023-02-14","2023-02-14","2023-02-14","2023-02-14","2022-11-14","2022-08-15","2022-05-16","2022-02-14","2022-02-14","2022-02-14","2022-02-14","2022-01-26","2021-11-15","2021-10-18","2021-09-27","2021-09-17","2021-09-13","2021-09-07","2021-08-31","2021-08-30","2021-08-16","2021-08-09","2021-05-17","2021-03-25","2021-02-16","2021-02-16","2021-02-16","2021-02-16","2021-02-16","2020-11-16","2020-08-14","2020-05-15","2020-02-14","2020-02-14","2020-02-14","2020-02-14","2019-11-14","2019-09-03","2019-08-14","2019-06-27","2019-05-15","2019-02-14","2019-02-14","2019-02-14","2018-11-14","2018-08-14","2018-07-12","2018-07-09","2018-07-02","2018-05-15","2018-03-15","2018-02-14","2018-01-22","2018-01-22","2017-11-30","2017-11-14","2017-08-14","2017-05-15","2017-04-10","2017-02-14","2017-02-14","2016-11-14","2016-08-15","2016-05-16","2016-02-12","2016-02-11","2015-11-12","2015-08-17"],"reportDate":["2026-03-31","","2025-12-31","2025-09-30","2025-06-30","2025-06-30","2025-03-31","","2024-12-31","2024-09-30","","2024-06-30","2024-06-30","2024-03-31","","","2023-12-31","","2023-09-30","","2023-06-30","2023-03-31","","","","2022-12-31","2022-09-30","2022-06-30","2022-03-31","","","","2021-12-31","","2021-09-30","","","","","","","","2021-06-30","","2021-03-31","","2020-12-31","","","","","2020-09-30","2020-06-30","2020-03-31","2019-12-31","","","","2019-09-30","","2019-06-30","","2019-03-31","2018-12-31","","","2018-09-30","2018-06-30","","","","2018-03-31","","2017-12-31","2018-01-18","","2017-11-20","2017-09-30","2017-06-30","2017-03-31","","","2016-12-31","2016-09-30","2016-06-30","2016-03-31","","2015-12-31","2015-09-30","2015-06-30"],"acceptanceDateTime":["2026-05-15T12:52:34.000Z","2026-05-15T12:30:14.000Z","2026-02-17T14:18:05.000Z","2025-11-14T14:20:34.000Z","2025-08-29T16:17:53.000Z","2025-08-14T12:47:28.000Z","2025-05-15T13:47:17.000Z","2025-04-30T15:14:34.000Z","2025-02-14T14:12:09.000Z","2024-11-14T15:17:33.000Z","2024-11-04T20:00:25.000Z","2024-08-29T14:25:58.000Z","2024-08-14T14:10:57.000Z","2024-05-15T14:13:20.000Z","2024-02-14T20:03:45.000Z","2024-02-14T20:02:16.000Z","2024-02-14T14:36:14.000Z","2023-12-18T21:15:19.000Z","2023-11-14T15:06:58.000Z","2023-11-09T19:30:13.000Z","2023-08-14T14:03:37.000Z","2023-05-15T12:52:08.000Z","2023-02-14T14:39:03.000Z","2023-02-14T14:36:17.000Z","2023-02-14T14:34:11.000Z","2023-02-14T13:01:13.000Z","2022-11-14T14:06:26.000Z","2022-08-15T14:10:37.000Z","2022-05-16T14:28:21.000Z","2022-02-14T15:14:37.000Z","2022-02-14T15:10:39.000Z","2022-02-14T15:07:45.000Z","2022-02-14T14:25:31.000Z","2022-01-26T21:05:14.000Z","2021-11-15T14:22:17.000Z","2021-10-18T20:10:02.000Z","2021-09-27T21:11:05.000Z","2021-09-16T21:49:38.000Z","2021-09-13T13:08:07.000Z","2021-09-07T21:17:59.000Z","2021-08-31T21:06:05.000Z","2021-08-30T20:30:33.000Z","2021-08-16T10:14:05.000Z","2021-08-09T20:15:23.000Z","2021-05-17T12:58:04.000Z","2021-03-25T21:00:27.000Z","2021-02-16T15:19:10.000Z","2021-02-16T15:02:57.000Z","2021-02-16T15:00:52.000Z","2021-02-16T14:58:24.000Z","2021-02-16T14:55:10.000Z","2020-11-16T15:08:56.000Z","2020-08-14T13:49:03.000Z","2020-05-15T14:13:19.000Z","2020-02-14T15:20:13.000Z","2020-02-14T14:07:52.000Z","2020-02-14T14:05:55.000Z","2020-02-14T14:03:54.000Z","2019-11-14T14:36:11.000Z","2019-09-03T14:45:22.000Z","2019-08-14T13:20:40.000Z","2019-06-27T14:38:54.000Z","2019-05-15T12:24:15.000Z","2019-02-14T14:36:24.000Z","2019-02-14T13:54:36.000Z","2019-02-14T13:52:22.000Z","2018-11-14T13:57:23.000Z","2018-08-14T14:20:24.000Z","2018-07-12T15:13:07.000Z","2018-07-09T12:15:57.000Z","2018-07-02T14:02:01.000Z","2018-05-15T15:54:57.000Z","2018-03-15T21:28:26.000Z","2018-02-14T12:43:46.000Z","2018-01-22T19:11:00.000Z","2018-01-22T19:08:52.000Z","2017-11-30T21:23:49.000Z","2017-11-14T16:11:14.000Z","2017-08-14T13:44:28.000Z","2017-05-15T11:31:44.000Z","2017-04-10T14:14:26.000Z","2017-02-14T16:02:16.000Z","2017-02-14T15:10:48.000Z","2016-11-14T11:57:18.000Z","2016-08-15T16:11:40.000Z","2016-05-16T14:34:51.000Z","2016-02-12T14:27:34.000Z","2016-02-11T19:11:35.000Z","2015-11-12T18:22:10.000Z","2015-08-17T16:12:26.000Z"],"act":["34","","34","34","34","34","34","","34","34","","34","34","34","","","34","","34","","34","34","","","","34","34","34","34","","","","34","","34","","","","","","","","34","","34","","34","","","","","34","34","34","34","","","","34","","34","","34","34","","","34","34","","","","34","","34","34","","34","34","34","34","","","34","34","34","34","","34","34","34"],"form":["13F-HR","SCHEDULE 13G/A","13F-HR","13F-HR","N-PX","13F-HR","13F-HR","SCHEDULE 13D/A","13F-HR","13F-HR","SC 13D/A","N-PX","13F-HR","13F-HR","SC 13G/A","SC 13G/A","13F-HR","SC 13G/A","13F-HR","SC 13D/A","13F-HR","13F-HR","SC 13G/A","SC 13G","SC 13G/A","13F-HR","13F-HR","13F-HR","13F-HR","SC 13G/A","SC 13G/A","SC 13G/A","13F-HR","SC 13D/A","13F-HR","SC 13D/A","SC 13D/A","SC 13D/A","SC 13D/A","SC 13D/A","SC 13D/A","SC 13D","13F-HR","SC 13G/A","13F-HR","PX14A6G","13F-HR","SC 13G/A","SC 13G/A","SC 13G","SC 13G","13F-HR","13F-HR","13F-HR","13F-HR","SC 13G/A","SC 13G/A","SC 13G/A","13F-HR","SC 13G/A","13F-HR","SC 13G","13F-HR","13F-HR","SC 13G","SC 13G","13F-HR","13F-HR","SC 13D/A","SC 13D/A","SC 13D/A","13F-HR","SC 13D","13F-HR","4","SC 13G/A","3","13F-HR","13F-HR","13F-HR","SC 13G/A","SC 13G","13F-HR","13F-HR","13F-HR","13F-HR","SC 13G/A","13F-HR","13F-HR","13F-HR"],"fileNumber":["028-16990","","028-16990","028-16990","028-16990","028-16990","028-16990","","028-16990","028-16990","","028-16990","028-16990","028-16990","","","028-16990","","028-16990","","028-16990","028-16990","","","","028-16990","028-16990","028-16990","028-16990","","","","028-16990","","028-16990","","","","","","","","028-16990","","028-16990","","028-16990","","","","","028-16990","028-16990","028-16990","028-16990","","","","028-16990","","028-16990","","028-16990","028-16990","","","028-16990","028-16990","","","","028-16990","","028-16990","811-23264","","811-23264","028-16990","028-16990","028-16990","","","028-16990","028-16990","028-16990","028-16990","","028-16990","028-16990","028-16990"],"filmNumber":["26982674","","26637068","251481761","251278458","251214638","25949425","","25623785","241458178","","241259759","241204912","24947932","","","24633165","","231402328","","231166973","23918747","","","","23622622","221380932","221163142","22926352","","","","22626164","","211406845","","","","","","","","211174259","","21927889","","21633896","","","","","201314341","201101895","20881582","20615169","","","","191216934","","191023244","","19825194","19601649","","","181180588","181014993","","","","18834461","","18607134","18539576","","171231529","171199305","171027773","17841069","","","17603525","161990360","161831148","161651405","","161410689","151223180","151058291"],"items":["","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","","",""],"core_type":["13F-HR","SCHEDULE 13G/A","13F-HR","13F-HR","N-PX","13F-HR","13F-HR","SCHEDULE 13D/A","13F-HR","13F-HR","SC 13D/A","N-PX","13F-HR","13F-HR","SC 13G/A","SC 13G/A","13F-HR","SC 13G/A","13F-HR","SC 13D/A","13F-HR","13F-HR","SC 13G/A","SC 13G","SC 13G/A","13F-HR","13F-HR","13F-HR","13F-HR","SC 13G/A","SC 13G/A","SC 13G/A","13F-HR","SC 13D/A","13F-HR","SC 13D/A","SC 13D/A","SC 13D/A","SC 13D/A","SC 13D/A","SC 13D/A","SC 13D","13F-HR","SC 13G/A","13F-HR","PX14A6G","13F-HR","SC 13G/A","SC 13G/A","SC 13G","SC 13G","13F-HR","13F-HR","13F-HR","13F-HR","SC 13G/A","SC 13G/A","SC 13G/A","13F-HR","SC 13G/A","13F-HR","SC 13G","13F-HR","13F-HR","SC 13G","SC 13G","13F-HR","13F-HR","SC 13D/A","SC 13D/A","SC 13D/A","13F-HR","SC 13D","13F-HR","4","SC 13G/A","3","13F-HR","13F-HR","13F-HR","SC 13G/A","SC 13G","13F-HR","13F-HR","13F-HR","13F-HR","SC 13G/A","13F-HR","13F-HR","13F-HR"],"size":[8033,10757,7601,7605,6939,8040,8037,24359,8045,8045,78238,14211,8046,8059,60267,60496,8481,63499,7591,46505,7973,7535,59452,63850,59982,7859,7795,9053,8229,59686,60488,59972,9088,41875,9090,86924611,559028,1611944,97392,66649,5324689,110656,9085,57449,9063,20701,9071,54511,59785,63479,64514,9071,11186,11133,10744,59904,61009,61730,9903,65951,9051,63684,9100,8740,64173,63935,9581,8711,52223,52527,64011,9967,698577,9959,9879,60424,6320,8241,7400,6548,61498,64522,5698,6129,6128,6548,123861,6560,6132,5703],"isXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isInlineXBRL":[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],"isXBRLNumeric":[0,0,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null],"primaryDocument":["xslForm13F_X02/primary_doc.xml","xslSCHEDULE_13G_X02/primary_doc.xml","xslForm13F_X02/primary_doc.xml","xslForm13F_X02/primary_doc.xml","xslN-PX_X01/primary_doc.xml","xslForm13F_X02/primary_doc.xml","xslForm13F_X02/primary_doc.xml","xslSCHEDULE_13D_X01/primary_doc.xml","xslForm13F_X02/primary_doc.xml","xslForm13F_X02/primary_doc.xml","p24-3188sc13da.htm","xslN-PX_X01/primary_doc.xml","xslForm13F_X02/primary_doc.xml","xslForm13F_X02/primary_doc.xml","p24-0512sc13ga.htm","p24-0514sc13ga.htm","xslForm13F_X02/primary_doc.xml","p23-2974sc13ga.htm","xslForm13F_X02/primary_doc.xml","p23-2109sc13da.htm","xslForm13F_X02/primary_doc.xml","xslForm13F_X02/primary_doc.xml","p23-0772sc13ga.htm","p23-0784sc13g.htm","p23-0785sc13ga.htm","xslForm13F_X02/primary_doc.xml","xslForm13F_X01/primary_doc.xml","xslForm13F_X01/primary_doc.xml","xslForm13F_X01/primary_doc.xml","p22-0753sc13ga.htm","p22-0751sc13ga.htm","p22-0752sc13ga.htm","xslForm13F_X01/primary_doc.xml","p22-0353sc13da.htm","xslForm13F_X01/primary_doc.xml","p21-2229sc13da.htm","p21-2217sc13da.htm","p21-2130sc13da.htm","p21-2127sc13da.htm","p21-2094sc13da.htm","p21-2054sc13da.htm","p21-2067sc13d.htm","xslForm13F_X01/primary_doc.xml","p21-1918sc13ga.htm","xslForm13F_X01/primary_doc.xml","p21-1039px14a6g.htm","xslForm13F_X01/primary_doc.xml","p21-0505sc13ga.htm","p21-0506sc13ga.htm","p21-0492sc13g.htm","p21-0496sc13g.htm","xslForm13F_X01/primary_doc.xml","xslForm13F_X01/primary_doc.xml","xslForm13F_X01/primary_doc.xml","xslForm13F_X01/primary_doc.xml","p20-0136sc13ga.htm","p20-0137sc13ga.htm","p20-0139sc13ga.htm","xslForm13F_X01/primary_doc.xml","p19-1840sc13ga.htm","xslForm13F_X01/primary_doc.xml","p19-1463sc13g.htm","xslForm13F_X01/primary_doc.xml","xslForm13F_X01/primary_doc.xml","p19-0196sc13g.htm","p19-0200sc13g.htm","xslForm13F_X01/primary_doc.xml","xslForm13F_X01/primary_doc.xml","p18-1460sc13da.htm","p18-1415sc13da.htm","p18-1389sc13da.htm","xslForm13F_X01/primary_doc.xml","p18-0874sc13d.htm","xslForm13F_X01/primary_doc.xml","xslF345X03/p18-0185form4.xml","p18-0114sc13ga.htm","xslF345X02/p17-2267form3.xml","xslForm13F_X01/primary_doc.xml","xslForm13F_X01/primary_doc.xml","xslForm13F_X01/primary_doc.xml","p17-0948sc13ga.htm","p17-0715sc13g.htm","xslForm13F_X01/primary_doc.xml","xslForm13F_X01/primary_doc.xml","xslForm13F_X01/primary_doc.xml","xslForm13F_X01/primary_doc.xml","p16-0047sc13ga.htm","xslForm13F_X01/primary_doc.xml","xslForm13F_X01/primary_doc.xml","xslForm13F_X01/primary_doc.xml"],"primaryDocDescription":["","","","","","","","","","","CANADIAN NATIONAL RAILWAY COMPANY","","","","CANADIAN PACIFIC KANSAS CITY LTD/CN","MOODYS CORP /DE/","","MOODY'S CORP","","CANADIAN NATIONAL RAILWAY CO","","","BOSTON PROPERTIES, INC.","MOODYS CORPORATION","CHARTER COMMUNICATIONS, INC.","","","","","CANADIAN PACIFIC RAILWAY LIMITED","CHARTER COMMUNICATIONS, INC.","","","CANADIAN NATIONAL RAILWAY COMPANY","","CANADIAN NATIONAL RAILWAY COMPANY","CANADIAN NATIONAL RAILWAY COMPANY","CANADIAN NATIONAL RAILWAY COMPANY","CANADIAN NATIONAL RAILWAY COMPANY","CANADIAN NATIONAL RAILWAY COMPANY","CANADIAN NATIONAL RAILWAY COMPANY","CANADIAN NATIONAL RAILWAY COMPANY","","BOSTON PROPERTIES, INC.","","UNION PACIFIC CORP","","UNIVAR SOLUTIONS INC.","CANADIAN PACIFIC RAILWAY LTD/CN","CHARTER COMMUNICATIONS, INC. /MO/","BOSTON PROPERTIES, INC.","","","","","UNIVAR SOLUTIONS INC.","CANADIAN PACIFIC RAILWAY LIMITED","CHARTER COMMUNICATIONS, INC.","","CANADIAN PACIFIC RAILWAY LIMITED","","UNIVAR INC.","","","CHARTER COMMUNICATIONS, INC. /MO/","CANADIAN PACIFIC RAILWAY LIMITED","","","ALTABA INC.","ALTABA INC.","ALTABA INC.","","ALTABA INC.","","ALTABA INC.","TCI FUND MANAGEMENT LTD","ALTABA INC.","","","","TCI FUND MANAGEMENT LTD","TCI FUND MANAGEMENT LTD","","","","","TCI FUND MANAGEMENT LTD","","",""]},"files":[]}}