- Open
- 335.00
- High
- 330.52
- Low
- 328.00
- Close
- 328.00
- Change
- -5.00 (-1.49%)
- Volume
- 6,739
| 18 Sept 2026 | 09:15:17 | Form 8.3 - Stefan Barden - Replacement |
| 16 Sept 2026 | 07:00:03 | Rejection of Brave Bison’s Fourth Offer |
| 15 Sept 2026 | 18:26:18 | Form 8.3 - System1 Group - Bainsville Commercial |
| 14 Sept 2026 | 15:13:13 | Form 8.3 - System1 Group - Bainsville Commercial |
| 11 Sept 2026 | 17:15:00 | Form 8.3 - System1 Group - Bainsville Commercial |
| 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.
| 18 Sept 2026 | 09:15:17 | Form 8.3 - Stefan Barden - Replacement |
| 16 Sept 2026 | 07:00:03 | Rejection of Brave Bison’s Fourth Offer |
| 15 Sept 2026 | 18:26:18 | Form 8.3 - System1 Group - Bainsville Commercial |
| 14 Sept 2026 | 15:13:13 | Form 8.3 - System1 Group - Bainsville Commercial |
| 11 Sept 2026 | 17:15:00 | Form 8.3 - System1 Group - Bainsville Commercial |
| 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.
| Issuer | Mkt cap | 1Y |
|---|---|---|
| £4.22bn | -0.0% | |
| £175m | -0.1% | |
| £46m | — | |
SYS1System1 Group PLC | £43m | -0.2% |
| £28m | -0.5% | |
| £14m | -0.5% |
| Issuer | Mkt cap | 1Y |
|---|---|---|
| £4.22bn | -0.0% | |
| £175m | -0.1% | |
| £46m | — | |
SYS1System1 Group PLC | £43m | -0.2% |
| £28m | -0.5% | |
| £14m | -0.5% |
