{"data":[{"accessionNo":"0001017918-26-000064","formType":"SCHEDULE 13G/A","amendmentNo":22,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":"303075105","securityClass":"Common Stock","eventDate":"2026-06-30","reportingPerson":"Baron Capital Group, Inc.","reportingCik":null,"personType":"CO,HC","sharesOwned":4200856,"percentOfClass":11.81,"filedAt":"2026-08-14","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-26-000064","formType":"SCHEDULE 13G/A","amendmentNo":22,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":"303075105","securityClass":"Common Stock","eventDate":"2026-06-30","reportingPerson":"Ronald Baron","reportingCik":null,"personType":"IN,HC","sharesOwned":4200856,"percentOfClass":11.81,"filedAt":"2026-08-14","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-26-000064","formType":"SCHEDULE 13G/A","amendmentNo":22,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":"303075105","securityClass":"Common Stock","eventDate":"2026-06-30","reportingPerson":"BAMCO INC /NY/","reportingCik":null,"personType":"CO,IA","sharesOwned":3721445,"percentOfClass":10.46,"filedAt":"2026-08-14","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-26-000064","formType":"SCHEDULE 13G/A","amendmentNo":22,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":"303075105","securityClass":"Common Stock","eventDate":"2026-06-30","reportingPerson":"Baron Partners Fund","reportingCik":null,"personType":"IV","sharesOwned":2149040,"percentOfClass":6.04,"filedAt":"2026-08-14","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-26-000064","formType":"SCHEDULE 13G/A","amendmentNo":22,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":"303075105","securityClass":"Common Stock","eventDate":"2026-06-30","reportingPerson":"Baron Capital Management, Inc.","reportingCik":null,"personType":"CO,IA","sharesOwned":479411,"percentOfClass":1.35,"filedAt":"2026-08-14","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0002100119-26-000539","formType":"SCHEDULE 13G","amendmentNo":null,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc","ticker":"FDS","cusip":"303075105","securityClass":"Common Stock","eventDate":"2026-03-31","reportingPerson":"Vanguard Capital Management","reportingCik":null,"personType":"IA","sharesOwned":2735013,"percentOfClass":7.37,"filedAt":"2026-04-29","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0000102909-26-001208","formType":"SCHEDULE 13G/A","amendmentNo":15,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc","ticker":"FDS","cusip":"303075105","securityClass":"Common Stock","eventDate":"2026-03-13","reportingPerson":"The Vanguard Group","reportingCik":null,"personType":"IA","sharesOwned":0,"percentOfClass":0,"filedAt":"2026-03-26","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-26-000017","formType":"SCHEDULE 13G/A","amendmentNo":21,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2026-02-28","reportingPerson":"Baron Capital Group, Inc.","reportingCik":null,"personType":"CO,HC","sharesOwned":3789413,"percentOfClass":10.21,"filedAt":"2026-03-06","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-26-000017","formType":"SCHEDULE 13G/A","amendmentNo":21,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2026-02-28","reportingPerson":"Ronald Baron","reportingCik":null,"personType":"IN,HC","sharesOwned":3789413,"percentOfClass":10.21,"filedAt":"2026-03-06","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-26-000017","formType":"SCHEDULE 13G/A","amendmentNo":21,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2026-02-28","reportingPerson":"BAMCO INC /NY/","reportingCik":null,"personType":"CO,IA","sharesOwned":3470424,"percentOfClass":9.35,"filedAt":"2026-03-06","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-26-000017","formType":"SCHEDULE 13G/A","amendmentNo":21,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2026-02-28","reportingPerson":"Baron Partners Fund","reportingCik":null,"personType":"IV","sharesOwned":1875000,"percentOfClass":5.05,"filedAt":"2026-03-06","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-26-000017","formType":"SCHEDULE 13G/A","amendmentNo":21,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2026-02-28","reportingPerson":"Baron Capital Management, Inc.","reportingCik":null,"personType":"CO,IA","sharesOwned":318989,"percentOfClass":0.86,"filedAt":"2026-03-06","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-26-000013","formType":"SCHEDULE 13G/A","amendmentNo":20,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2025-12-31","reportingPerson":"Baron Capital Group, Inc.","reportingCik":null,"personType":"CO,HC","sharesOwned":2888845,"percentOfClass":7.79,"filedAt":"2026-02-17","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-26-000013","formType":"SCHEDULE 13G/A","amendmentNo":20,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2025-12-31","reportingPerson":"Ronald Baron","reportingCik":null,"personType":"IN,HC","sharesOwned":2888845,"percentOfClass":7.79,"filedAt":"2026-02-17","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-26-000013","formType":"SCHEDULE 13G/A","amendmentNo":20,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2025-12-31","reportingPerson":"BAMCO INC /NY/","reportingCik":null,"personType":"CO,IA","sharesOwned":2611573,"percentOfClass":7.04,"filedAt":"2026-02-17","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-26-000013","formType":"SCHEDULE 13G/A","amendmentNo":20,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2025-12-31","reportingPerson":"Baron Capital Management, Inc.","reportingCik":null,"personType":"CO,IA","sharesOwned":277272,"percentOfClass":0.75,"filedAt":"2026-02-17","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0000895421-26-000022","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001013237","issuerName":"FACTSET RESEARCH SYSTEMS INC","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2025-12-31","reportingPerson":"Morgan Stanley","reportingCik":null,"personType":"HC,CO","sharesOwned":914409,"percentOfClass":2.5,"filedAt":"2026-02-11","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0000102909-26-000216","formType":"SCHEDULE 13G/A","amendmentNo":14,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2025-12-31","reportingPerson":"The Vanguard Group","reportingCik":null,"personType":"IA","sharesOwned":4455010,"percentOfClass":11.9,"filedAt":"2026-01-30","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0002012383-26-000758","formType":"SCHEDULE 13G/A","amendmentNo":1,"issuerCik":"0001013237","issuerName":"FACTSET RESEARCH SYSTEMS INC","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2025-12-31","reportingPerson":"BlackRock, Inc.","reportingCik":null,"personType":"HC","sharesOwned":2677198,"percentOfClass":7.2,"filedAt":"2026-01-21","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-25-000053","formType":"SCHEDULE 13G/A","amendmentNo":19,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2025-09-30","reportingPerson":"Ronald Baron","reportingCik":null,"personType":"IN,HC","sharesOwned":1819059,"percentOfClass":4.81,"filedAt":"2025-11-14","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-25-000053","formType":"SCHEDULE 13G/A","amendmentNo":19,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2025-09-30","reportingPerson":"Baron Capital Group, Inc.","reportingCik":null,"personType":"CO,HC","sharesOwned":1819059,"percentOfClass":4.81,"filedAt":"2025-11-14","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-25-000053","formType":"SCHEDULE 13G/A","amendmentNo":19,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2025-09-30","reportingPerson":"BAMCO INC /NY/","reportingCik":null,"personType":"CO,IA","sharesOwned":1566986,"percentOfClass":4.14,"filedAt":"2025-11-14","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0001017918-25-000053","formType":"SCHEDULE 13G/A","amendmentNo":19,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc.","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2025-09-30","reportingPerson":"Baron Capital Management, Inc.","reportingCik":null,"personType":"CO,IA","sharesOwned":252073,"percentOfClass":0.67,"filedAt":"2025-11-14","canonicalUrl":"https://xoomar.com/markets/stocks/fds"},{"accessionNo":"0000102909-25-000134","formType":"SCHEDULE 13G/A","amendmentNo":13,"issuerCik":"0001013237","issuerName":"FactSet Research Systems Inc","ticker":"FDS","cusip":null,"securityClass":"Common Stock","eventDate":"2025-09-30","reportingPerson":"The Vanguard Group","reportingCik":null,"personType":"IA","sharesOwned":4932382,"percentOfClass":13.04,"filedAt":"2025-10-30","canonicalUrl":"https://xoomar.com/markets/stocks/fds"}],"updatedAt":"2026-10-29T14:58:39.181Z","source":"xoomar.com","docs":"https://xoomar.com/markets/api","license":"https://xoomar.com/terms","attribution":"Credit XOOMAR with a link to the dataset page on xoomar.com when you republish this data","canonicalUrl":"https://xoomar.com/markets/stocks/fds","meta":{"source":"SEC","sourceAttribution":"Schedule 13D and 13G data: SEC.","notice":"10 requests a minute without a key, 30 with a free key. Get a free key at https://xoomar.com/signup?utm_source=api, register your app at https://xoomar.com/developers/register?utm_source=api, and credit the data as \"Data: XOOMAR\" together with the sourceAttribution line."}}