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| 29 Jul 2026 | 17:15:00 | Form 8.3 - System1 Group plc - Polo Capital |
| 29 Jul 2026 | 15:36:41 | Form 8.3 - System1 Group PLC |
| 29 Jul 2026 | 09:02:36 | Form 8.5 (EPT/RI) |
| 28 Jul 2026 | 09:04:48 | Form 8.5 (EPT/RI) |
| 19 Sep 2025 | Annual Report and Accounts (to 2025-03-31) | |
| 23 Sep 2024 | Annual Report and Accounts (to 2024-03-31) | |
| 27 Sep 2023 | Annual Report and Accounts (to 2023-03-31) |
System1 Group PLC operates as a marketing decision-making platform that leverages behavioral science to enhance advertising effectiveness, brand growth, and innovation success. The company provides automated data products and detailed consultancy services for ad testing, innovation testing, and brand effectiveness tracking, primarily targeting large global brands. System1 conducts tests in 81 markets worldwide, with offices in major cities including London, New York, and Singapore, helping clients make informed creative decisions that drive business results.
| 29 Jul 2026 | 17:15:00 | Form 8.3 - System1 Group plc - Polo Capital |
| 29 Jul 2026 | 15:36:41 | Form 8.3 - System1 Group PLC |
| 29 Jul 2026 | 09:02:36 | Form 8.5 (EPT/RI) |
| 28 Jul 2026 | 09:04:48 | Form 8.5 (EPT/RI) |
| 19 Sep 2025 | Annual Report and Accounts (to 2025-03-31) | |
| 23 Sep 2024 | Annual Report and Accounts (to 2024-03-31) | |
| 27 Sep 2023 | Annual Report and Accounts (to 2023-03-31) |
System1 Group PLC operates as a marketing decision-making platform that leverages behavioral science to enhance advertising effectiveness, brand growth, and innovation success. The company provides automated data products and detailed consultancy services for ad testing, innovation testing, and brand effectiveness tracking, primarily targeting large global brands. System1 conducts tests in 81 markets worldwide, with offices in major cities including London, New York, and Singapore, helping clients make informed creative decisions that drive business results.
| 27 Jul 2026 |
| 08:46:24 |
| Form 8.5 (EPT/RI) |
| 13 Jul 2026 |
| System1 rejects improved Brave Bison takeover approach as too low |
| 13 Jul 2026 | System1 rejects Brave Bison’s £43m takeover approach |
| 13 Jul 2026 | Brave Bison targets System1 in cash takeover approach |
| 16 Mar 2026 | AIM movers: River Global selling asset management business and DSW hit by postponed M&A |
| 16 Mar 2026 | System1 shares jump 19% as marketing analytics group forecasts return to profitable growth |
| 22 Oct 2025 | AIM movers: Greenroc Strategic funding and Polarean Imaging considers leaving AIM |
| 27 Jul 2026 |
| 08:46:24 |
| Form 8.5 (EPT/RI) |
| 13 Jul 2026 |
| System1 rejects improved Brave Bison takeover approach as too low |
| 13 Jul 2026 | System1 rejects Brave Bison’s £43m takeover approach |
| 13 Jul 2026 | Brave Bison targets System1 in cash takeover approach |
| 16 Mar 2026 | AIM movers: River Global selling asset management business and DSW hit by postponed M&A |
| 16 Mar 2026 | System1 shares jump 19% as marketing analytics group forecasts return to profitable growth |
| 22 Oct 2025 | AIM movers: Greenroc Strategic funding and Polarean Imaging considers leaving AIM |
| Issuer | Mkt cap | 1Y |
|---|---|---|
| £3.51bn | -0.2% | |
| £1.39bn | +0.2% | |
| £313m | -0.5% | |
| £165m | -0.5% | |
| £86m | +0.3% | |
SYS1System1 Group PLC | £46m | -0.2% |
| Issuer | Mkt cap | 1Y |
|---|---|---|
| £3.51bn | -0.2% | |
| £1.39bn | +0.2% | |
| £313m | -0.5% | |
| £165m | -0.5% | |
| £86m | +0.3% | |
SYS1System1 Group PLC | £46m | -0.2% |